compound composed of cations and anions the forces of attraction that bind oppositely charged ions together lowest whole-number ratio of ions in an ionic compound a depiction of the valence electrons as dots around the symbol for an element a mixture of two or more elements, at least one of which is a metal the attraction of the free-floating valence electrons for the positively charged metal ions ions of the halogen atoms the electron(s) in the highest occupied energy level of an atom the number of ions of opposite charge that surround each ion in a crystal Atoms in a compound tend to have the electron configuration of a noble gas. Shows the kinds and numbers of atoms in the smallest representative unit of a substance a. halide ions b. alloy c. octet rule d. formula unit e. electron dot structure f. ionic compound g. ionic bonds h. coordination number i. chemical formula j. valence electrons k. metallic bond
Answers
Answer:
compound composed of cations and anions the forces of attraction that bind oppositely charged ions together - ionic compound
lowest whole-number ratio of ions in an ionic compound - formula unit
a depiction of the valence electrons as dots around the symbol for an element - electron dot structure
a mixture of two or more elements, at least one of which is a metal - alloy
the attraction of the free-floating valence electrons for the positively charged metal - metallic bond
ions of the halogen atoms - halide ions
the electron(s) in the highest occupied energy level of an atom - valence electrons
the number of ions of opposite charge that surround each ion in a crystal - coordination number
Atoms in a compound tend to have the electron configuration of a noble gas - octet rule
Shows the kinds and numbers of atoms in the smallest representative unit - chemical formula
Explanation:
An ionic compound is composed of oppositely charged ions held together in a crystal lattice. The lowest whole-number ratio of ions in an ionic compound is known as the formula unit. The number of ions of opposite charge that surround each ion in a crystal is called the coordination number. Ions of the halogen atoms are negatively charged and are called halide ions
Elements are composed of atoms, the electron(s) in the highest occupied energy level of an atom are called valence electrons. In metals, the attraction of the free-floating valence electrons for the positively charged metal is called the metallic bond. For atoms of elements, a depiction of the valence electrons as dots around the symbol for an element is called the electron dot structure or Lewis structure.
A combination of elements may be a compound or an alloy. An alloy usually contains at least one metal. For compounds, the chemical formula Shows the kinds and numbers of atoms in the smallest representative unit. Atoms form compounds because atoms in a compound tend to have the electron configuration of a noble gas this is the octet rule.
The correct match of the given statement are 1 - f. ionic compound, 2- d. formula unit, 3 - e. electron dot structure, 4- b. alloy, 5- k. metallic bond, 6- a. halide ions, 7- j. valence electrons, 8- h. coordination number, 9 - c. octet rule, 10- i. chemical formula.
Ionic compounds are made up of oppositely charged ions that are kept together in a crystal lattice. The formula unit is the lowest whole-number ratio of ions in an ionic compound.
The coordination number is the number of ions with opposite charges that surround each ion in a crystal. Halide ions are halogen atom ions that are negatively charged.
Elements are made up of atoms, and the electron(s) in the atom's highest occupied energy level are known as valence electrons. The metallic bond refers to the attraction of free-floating valence electrons to positively charged metals in metals.
The electron dot structure or Lewis structure is a representation of the valence electrons as dots around the symbol for an element for atoms.
A compound or an alloy is a mixture of components. A metal is frequently present in an alloy.
The chemical formula is used for compounds. The types and numbers of atoms in the smallest representative unit are displayed.
The octet rule states that atoms in a compound tend to have the electron configuration of a noble gas.
Therefore, the correct matches are: 1 - f. ionic compound, 2- d. formula unit, 3 - e. electron dot structure, 4- b. alloy, 5- k. metallic bond, 6- a. halide ions, 7- j. valence electrons, 8- h. coordination number, 9 - c. octet rule, 10- i. chemical formula.
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The given question is incomplete, so the most probable complete question is,
Match the correct statement with their appropriate terms:
Compound composed of cations and anions, the forces of attraction that bind oppositely charged ions together.Lowest whole-number ratio of ions in an ionic compound.A depiction of the valence electrons as dots around the symbol for an element.A mixture of two or more elements, at least one of which is a metal.The attraction of the free-floating valence electrons for the positively charged metal.Ions of the halogen atoms.The electron(s) in the highest occupied energy level of an atom.The number of ions of opposite charge that surround each ion in a crystal.Atoms in a compound tend to have the electron configuration of a noble gas.Shows the kinds and numbers of atoms in the smallest representative unit.Related Questions
An iron bar at 200°C is placed in thermal contact with an identical iron bar at 120°C in an at isolated system. After 30 minutes, both iron bars are at
160°C. If the iron bars were placed in thermal contact in an open system instead of an isolated system, how would the results be different?
Assume that the ropm temperature is 25°C.
A.) The temperatures of the iron bars after 30 minutes would be less than 160°C because heat would be lost to the surroundings.
B.) It would take more than 30 minutes for both iron bars to reach 160°C because heat would be transferred less efficiently.
C.) The temperatures of both iron bars would increase as they absorb heat from the surroundings.
D.) The temperatures of both iron bars would decrease because pieces of them would be lost to the surroundings.
Answers
Answer:
please don't ask for me I don't have no
Answer: The correct answers are A and B.
Explanation:
Conduction: In the conduction, the heat is transferred from the hotter body to the colder body until the temperature on both bodies are equal.
In thermal equilibrium, there is no heat transfer as the heat is transferred till the temperature on the bodies are not same.
In the given problem, an iron bar at 200°C is placed in thermal contact with an identical iron bar at 120°C in an isolated system. After 30 minutes, the thermal equilibrium is attained. Then, the temperature on both iron bars are equal.Both iron bars are at 160°C in an isolated system.
But in an open system, the temperatures of the iron bars after 30 minutes would be less than 160°C. There will be heat lost to the surrounding. The room temperature is 25°C. There will be exchange of the heat occur between the iron bars and the surrounding. But It would take more than 30 minutes for both iron bars to reach 160°C because heat would be transferred less efficiently.
Therefore, the correct options are (A) and (B).
When zinc reacts with copper sulfate solution, zinc sulfate solution and copper are formed.(i) An experiment was carried out to measure the temperature change when zinc powder reactswith copper sulfate solution.initial temperature of copper sulfate solution = 20 °Cfinal temperature of mixture after the reaction = 46 °CExplain what the temperature readings show about the type of heat change that occurs duringthis reaction.
Answers
The temperature increase from 20 °C to 46 °C indicates that the reaction between zinc and copper sulfate solution is exothermic, with heat being released into the surroundings.
In the given reaction between zinc and copper sulfate solution, the temperature change can provide insights into the type of heat change occurring during the reaction. Based on the provided information, the initial temperature of the copper sulfate solution was 20 °C, and the final temperature of the mixture after the reaction was 46 °C.
The temperature increase observed in this reaction indicates an exothermic heat change. An exothermic reaction releases heat energy into the surroundings, resulting in a temperature rise. In this case, the reaction between zinc and copper sulfate solution is exothermic because the final temperature is higher than the initial temperature.
During the reaction, zinc displaces copper from copper sulfate to form zinc sulfate and copper metal. This displacement reaction is known as a single displacement or redox reaction. Zinc is more reactive than copper and therefore replaces copper in the compound.
The formation of new chemical bonds during the reaction releases energy in the form of heat. This energy is transferred to the surroundings, leading to an increase in temperature. The heat released is greater than the heat absorbed, resulting in a net increase in temperature.
The exothermic nature of this reaction can be explained by the difference in bond energies between the reactants and products. The breaking of bonds in the reactants requires energy input, while the formation of new bonds in the products releases energy.
In this case, the energy released during the formation of zinc sulfate and copper metal is greater than the energy required to break the bonds in copper sulfate and zinc.
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. The atomic number of a newly discovered element is found to be 128, and its mass number is 279.
How many protons, neutrons, and electrons are found in an ion of this element bearing a charge of
5−?
Answers
A-128
P-128
E-128
M-279
A-128
N-151
Hope this strategy helps
A student has a beaker of a clear and colorless solution. Which method would quickly reveal if the solution was saturated or unsaturated? O A. Add more solvent to the beaker. O B. Add heat to the solution and stir. O C. Allow some of the solvent to evaporate over time. O D. Add a crystal of the same solute to the beaker.
Answers
Answer:
B. Add heat to the solution and stir.
Explanation:
Adding heat and stirring the solution will increase the rate in which it dissolves. After most of the particles have dissolved, it will be visible at the bottom of the container whether it was saturated or not.
Physical properties are the characteristics of matter that can be seen or measured through direct observation.
True
False
Answers
It is true
how do you find protons in an atom?
Answers
Answer:
Protons are always found in the nucleus of an atom.
Explanation:
Protons and neutrons make up the nucleus of an atom, which is in the center. The electrons "orbit" the nucleus.
Answer:
The number of protons, neutrons, and electrons in an atom can be determined from a set of simple rules.
Explanation:
The number of protons in the nucleus of the atom is equal to the atomic number (z). The number of electrons in a neutral atom is equal to the number of protons.
What element in group 1 is not considered an alkali metal?
A. Hydrogen (H)
B. Lithium (Li)
C. Potassium (K)
D. Cesium (Cs)
Answers
Answer:
A
Explanation:
Hydrogen isn't an alkali metal
Answer:
hydrogen
Explanation:
hydrogen is a gas not a metal
I will give brainliest if you show work and answer correctly
1. Calculate the slope of each line using the points given. Graph each of the lines and determine if each is a positive or negative relationship. If you use graph paper, please take a photo and upload to your document.
2. Which graph(s) can not be a true measure of density? Why?
a. (24cm3, 6.0g), (12cm3, 24g)
b. (5.0cm3, 6.0g), (13cm3, 15g)
c. (5.0cm3, 4.0g), (25cm3, 24g)
d. (24 cm 3 , 8.0 g), (12 cm 3 , 22 g)
Answers
Answer:
https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:linear-equations-graphs/x2f8bb11595b61c86:slope/v/graph-from-point-slope. Answer 1
Explanation:
I only know the first one
Draw 4 decyne structure
Answers
The structure of the alkyne 4 - decyne is shown in the image attached.
How do you draw 4-decyne?Alkyne functional group compounds with a triple bond made of carbon and carbon contain 4-decyne (C). The triple bond is found at the fourth carbon position in the ten-carbon chain (decyne) of 4-decyne.
Nine hydrogen atoms (H) are joined to the first nine carbon atoms (C), starting from the left side.
In conclusion, 4-decyne is made up of a chain of ten carbon atoms, with the fourth carbon atom serving as the center of a carbon-carbon triple bond (C). Except for the carbon involved in the triple bond, all carbon atoms are connected to hydrogen atoms.
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Which of the following terms best describes the reactive nature of a Grignard reagent? a) electrophile b) carbocation c) nucleophile
d) free radical
Answers
nucleophile best describes the reactive nature of a Grignard reagent among the follwoing.
A Grignard reagent is a type of organometallic reagent that is formed by the reaction of an alkyl or aryl halide with magnesium metal. The reactive nature of a Grignard reagent is a nucleophile. Nucleophiles are species that are attracted to positively charged species and have a lone pair of electrons that they can use to form a new bond. In the case of Grignard reagents, the reagent is able to attack the electrophilic carbon atom in a compound, forming a new C-C bond.nucleophile - is a species that is attracted to positively charged species and has a lone pair of electrons that they can use to form a new bond.
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The survival of aquatic organisms depends on the small
amount of O2 that dissolves in H2O. The diagrams above
represent possible models to explain this phenomenon. Which
diagram provides the better particle representation for the
solubility of O2 in H20, and why?
Answers
Answer:
Explanation:
Diagram 2! Because the polar H2O molecules can induce temporary dipoles on the electron clouds of 02 molecules.
what properties of a natural resource make it useful for humans as a materials or energy source?
Answers
The properties of a natural resource that make it useful for humans as a material or energy source is the ability to convert mass into energy and vice versa.
What are natural resources?The expression natural resources make reference to all types of matter and energy extracted from nature that can be used to produce goods and services.
Some examples of natural resources include for example irreversible resources such as fossil fuels (i.e., oil, or coal, gas, minerals such as metals, rocks, etc) as well as those based on the use of reversible energy such as eolic air energy, solar radiation or sunlight, soil and hydric resources or water.
Therefore, with this data, we can see that natural resources can be defined as any material and or energy obtained from nature that may be irreversible or reversibly used to produce goods and services.
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Identity the organic function group in the following?
Answers
We can see here that the organic function of cannabinol is its interaction with the endocannabinoid system (ECS) in the human body.
The organic function of procainamide lies in its ability to block sodium channels in cardiac cells, leading to a decrease in the excitability of the heart muscle and a suppression of abnormal electrical signals.
What is Procainamide?Procainamide is a medication used primarily in the treatment of cardiac arrhythmias, specifically ventricular arrhythmias. It belongs to a class of drugs known as antiarrhythmics, which work by regulating the electrical activity of the heart.
In addition to its antiarrhythmic properties, procainamide also possesses mild anticholinergic effects, which contribute to its overall pharmacological profile.
Cannabinol (CBN) is a cannabinoid compound found in the cannabis plant. While it is not as well-known as other cannabinoids like THC and CBD, it has some notable organic functions and potential effects on the body.
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A gas occupies 10.00L at 100k and exerts a pressure of 1.71atm. What volume, in liters, will the gas occupy if the temp is increased to 290.29K and the pressure is increased to 9.70atm?
Answers
Answer:
5.12 L
Explanation:
P1V1/T1 = P2V2/T2
1.71 atm *10.0L /100 K = 9.70 atm *x/290.29 K
x = 1.71 atm *10.0L*290.29K /(100 K * 9.70 atm)= 5.12 L
Glucose, C6H12O6, is used to prepare intravenous feeding solutions. What volume of 5.0 % W/V glucose solution can be prepared using 125 g of glucose? Show your working.
Please if the answer is correct, ill give brainliest
Answers
250 L of 5.0% w/v glucose solution can be prepared using 125 g of glucose.
We use the below formula to solve our problem,w/v = [ mass of solute (g) / volume of solution (mL) ] × 100
Substitute the values from our problem,5.0 % w/v = [ 125 g / volume of solution (mL) ] × 100
Rearranging the formula, we havevolume of solution (mL) = [ 125 g / 5.0 % w/v ] x 100
Substitute further for w/v,volume of solution (mL) = [ 125 g / (5.0 / 100) ] x 100
Simplify the expression,volume of solution (mL) = [ 125 g / 0.05 ] x 100
Hence, the volume of solution (mL) = 250,000 mL or 250 LPO3-
2.64 Complete the table by filling in the formula for the ionic compound formed by each pair of cations and anions, as shown for the first pair.
Ion
02-
Na
Ca2+
Fe2+
A13+
Na2O
NO3
AsO43-
Answers
The completed table that fills the formula for the ionic compound has been given below:
How to solveTo form an ionic compound from the given cation and anion we need to balance the charges of the cation and anions.
For example: Suppose we have a cation C3+ and an anion A-. Thus, to balance the charge we need 1C3+ and 3A-, the formula of the ionic compound formed CA3.
Ion K+ NH4+ Mg2+ Fe3+
Cl- KCl NH4Cl MgCl2 FeCl3
OH- KOH NH4OH Mg(OH)2 Fe(OH)3
CO32- K2CO3 (NH4)2CO3 MgCO3 Fe2CO3
PO43- K3PO4 (NH4)3PO4 Mg3(PO4)2 FePO4
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2.
101.3 Kpa
In a balloon, the pressure is 385 atm with a volume of 1.5 L at 25 °C. What is the new pressure
when the temperature increases to 32 °C causing the balloon to expand to 2.2 L?
Answers
The new pressure of the balloon, given that the temperature increases to 32 °C causing the balloon to expand to 2.2 L is 268.97 atm
How do i determine the new pressure of the balloon?From the question given above, the following data were obtained:
Initial pressure (P₁) = 385 atmInitial volume (V₁) = 1.5 LInitial temperature (T₁) = 25 °C = 25 + 273 = 298 KNew temperature (T₂) = 32 °C = 32 + 273 = 305 KNew volume (V₂) = 2.2 LNew pressure (P₂) = ?The combined gas equation states shown as below:
P₁V₁ / T₁ = P₂V₂ / T₂
Inputting the various parameters, we can obtain the new pressure as follow:
(385 × 1.5) / 298 = (P₂ × 2.2) / 305
Cross multiply
298 × 2.2 × P₂ = 385 × 1.5 × 305
Divide both sides by (298 × 2.2)
P₂ = (385 × 1.5 × 305) / (298 × 2.2)
P₂ = 268.97 atm
Thus, from the above calculation, it is evident tha the new pressure of the balloon is 268.97 atm
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Use the dichotomous key below to identify the cell type.
Animal cell
Fungal cell
Bacterial cell
Plant cell
Answers
The dichotomous key is not given here, however, the correct dichotomous key is as follows:
step- 1a cell has a nucleus and organelles - go to step 2
1b cell has no nucleus or organelles - bacterial cell
step- 2a cell has a cell wall - go to step 3
2b cell has no cell wall - animal cell
step- 3a cell has chloroplasts - plant cell
3b cell has no chloroplasts - fungal cell
Using this dichotomous key the cell can be identified as - Fungal cell.
A dichotomous key is an essential scientific tool that is used to find out the various kinds of organisms on their observable traits. Dichotomous keys have a series of statements with two different choices in each step that will take the student or user to the correct identification.
Identification of the given cell:
1. Follow step 1.
If cells have a nucleus and organelles - yes then go to step 22. follow step 2.
2a. if cell has a cell wall - yes go to step 33. follow step 3.
3a. if cell has chloroplasts - no then fungal cellFungal cells have a nucleus and cell organelles enclosed with a cell wall around the plasma membrane but do not have chloroplast.
Thus, Using this dichotomous key the cell can be identified as - Fungal cell.
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Answer:
its a i took the test
Explanation:
Help!! 10 points!! Please don’t answer if u don’t know!!
What happens when baking soda is mixed with vinegar
A. A new substance is formed.
B. The substances stay the same.
C. The baking soda stays the same but the vinegar changes form.
D. The mixture turns from a liquid into a solid.
Answers
Answer:
the answer is A a new substance is formed
Answer:
A. A new substance is formed
Explanation:
The mixture quickly foams up with carbon dioxide gas which then if enough vinegar is used, all of the baking soda can be made to react and disappear into the vinegar solution...
Hope it helped
A solution has a pOH of 5.What is the pH?Classify the solution as acid, base, or neutral.
Answers
The pOH and the pH are related by the following equation:
\(pH+pOH=14\)Thus, we can solve for pH and substitute the pOH = 5 to find the pH:
\(\begin{gathered} pH+pOH=14 \\ pH=14-pOH \\ pH=14-5 \\ pH=9 \end{gathered}\)So, the pH is 9.
We can classify the solution by using the folowing:
\(\begin{gathered} pH<7\to acid \\ pH=7\to neutral \\ pH>7\to base \end{gathered}\)Since the pH is 9, it is greater than 7, so the solution is a base.
Is the number of total molecules on the left side of a balanced equation always equal to the number of total molecules on the right side of the equation
Answers
Answer:
No
Explanation:
No, but the total mass of reactants must equal the total mass of products to be a balanced equation.
Example: Consider the following reaction ...
3H₂ + N₂ => 2NH₃ and 'amu' is atomic mass units (formula weights from periodic table)
In terms of molecules, there are 4 molecules on the left (3 molecular hydrogens (H₂) and 1 molecular nitrogen (N₂) and 2 molecules of ammonia on the right side of equation arrow. ∑reactant molecules ≠ ∑product molecules.
In terms of mass of reactants & mass of products, the 3H₂ + N₂ => 6amu + 28amu = 34amu & mass of products (2NH₃) => 2(14amu) + 6(1amu) = 34amu for sum of product masses.
∑mass reactants = ∑mass products <=> 34amu = 34amu.
The expression '∑mass reactants = ∑mass products' as applied to chemical equations is generally known as 'The Law of Mass Balance'.
1. If a solution of sodium chloride has 22.3 g of
NaCl, and a volume of 2.00 L, what is its molarity?
Answers
We are given:
Mass of NaCl in the given solution = 22.3 grams
Volume of the given solution = 2 L
Number of Moles of NaCl:
We know that the number of moles = Given mass / Molar mass
Number of moles = 22.3 / 58.44 = 0.382 moles
Molarity of NaCl in the Given solution:
We know that Molarity of a solution = Moles of Solute / Volume of Solution(in L)
Molarity = 0.382 / 2
Molarity = 0.191 M
What is the medium of the wave being detected by the seismograph
A. paper
B. Air
C. ink
D. rock
Answers
Answer:
D.
Explanation:
All good experiments should be...
Answers
Which of the following technique is used to purify the impurities that are not very different in chemical properties of element? [a] Gas chromatography [b] Column chromatography [c] TLC [d] HPLC
Answers
Answer:
Explanation: Liquid Chromatography
I'm sorry if i'm wrong
Use the information in the table to answer the question.Bond Bond Energy (kJ/mol)H-CI427CI-CI242H-H435Hydrogen and chlorine gases react to produce hydrochloric acid according to the reaction.H₂ + Cl2 → 2HCI-How much total bond energy, in kJ/mol, is in the products of the reaction?4 point
Answers
854kJ/mol
Explanations:Given the reaction between hydrogen and Chlorine as shown below;
\(H_2+Cl_2\rightarrow2HCl\)The total bond energy in the products of the reaction is given as:
\(\begin{gathered} bond\text{ energy at the product}=2(H-Cl) \\ bond\text{ energy at the product}=2(427) \\ bond\text{ energy at the product}=854kJmol^{-1} \end{gathered}\)Therefore the total bond energy in the products of the reaction is 854kJ/mol
7.) Regarding molecular formula and empirical formula for a particular compound... (A) the subscripts in the empirical formula must be greater than or equal to those of the molecular to (B) the subscripts in the empirical formula must be less than or equal to those of the molecular form (C) the subscripts in the empirical formula must always be equal to those of the molecular formula (D) the subscripts in the empirical formula must be less than or greater than those of the molecular.
Answers
Answer:
Explanation:
i think the anwer would be that its elliptical orbit and the tilt an its axis.
That helps :)))
How many moles of Chromium is in 4.41 ×10^24 atoms
Answers
7.32 moles of Chromium is present in 4.41 × 10²⁴ atoms.
How to find the number of moles ?Number of moles = \(\frac{\text{Given number of atoms}}{\text{Avogadro's Number}}\)
What is Avogadro's Number ?
Avogadro's number is the number of particles in one mole of substance. 6.022 × 10²³ is known as Avogadro's Constant / Avogadro's Number.
Avogadro's Number = 6.022 × 10²³
Now put the values in above formula we get
Number of moles = \(\frac{\text{Given number of atoms}}{\text{Avogadro's Number}}\)
= \(\frac{4.41 \times 10^{24}}{6.022 \times 10^{23}}\)
= 7.32 moles
Thus from the above conclusion we can say that 7.32 moles of Chromium is present in 4.41 × 10²⁴ atoms.
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Which image shows the greatest gravitational force?
Answers
Answer: The one with the big ball and tiny ball.
Explanation:
Gravitation forces have a lot of force in them. Therefore it shrinks an object that comes in its way.
If the molecular mass of methanol is 32.04 g/mol, what would be the mass of a 56.6 mole sample?
Answers
If the molecular mass of methanol is 32.04 g/mol, the mass of a 56.6 mole sample is 1812.264 g.
The molar mass of a substance is the mass of one mole of that substance. Therefore, it can be calculated using the chemical formula of the substance. Methanol's chemical formula is CH3OH, and its molar mass is 32.04 g/mol.How to calculate the mass of a 56.6 mole sample of methanol?In order to calculate the mass of a 56.6 mole sample of methanol, the molar mass of methanol and the number of moles must be considered. The mass can be calculated using the following formula: mass = number of moles x molar massThe mass of the 56.6 mole sample of methanol can be calculated using this formula:mass = 56.6 mol x 32.04 g/mol = 1812.264 gThis implies that the mass of a 56.6 mole sample of methanol would be 1812.264 grams.
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