Answers
Answer:
mass and distance
Explanation:
Related Questions
Help HELP pls pls plsssssss
Answers
Answer:
hurricane
Explanation:
back a few years ago it had hurricane Jackson or whatever
Answer:
Typhoon or Hurricane
Explanation:
1. Why is the metal heated in a dry test tube rather than just putting it straight into the boiling water?
Answers
Answer:
Students heat up a metal sample by placing it into a test tube suspended in boiling water. Since the water is boiling, the metal evnetually reaches the same temperature as the boiling water: 100oC. ... Putting the metal sample directly into the water – obviously – gets it wet.
The metal is heated in a dry test tube in order to measure the capacity of the metal.
When performing a chemical experiment, it is important to
Have your materials readyMake sure that the mixtures and elements are in the right amountTry as much as possible to have a controlled experimentInstead of putting the metal straight into the boiling water, it is necessary to measure the capacity by heating it in a dry test tube first.
Read more here:
https://brainly.com/question/20552555
Net ionic equation for potassium sulfide and magnesium iodide
Answers
The net ionic equation for the reaction between potassium sulfide and magnesium iodide is S2- + Mg2+ -> MgS, as the potassium and iodide ions are spectator ions and do not participate in the reaction.
To determine the net ionic equation for the reaction between potassium sulfide (K2S) and magnesium iodide (MgI2), we first need to identify the ions present in each compound and then determine the products formed when they react.
Potassium sulfide (K2S) dissociates into two potassium ions (K+) and one sulfide ion (S2-):
K2S -> 2K+ + S2-
Magnesium iodide (MgI2) dissociates into one magnesium ion (Mg2+) and two iodide ions (I-):
MgI2 -> Mg2+ + 2I-
Now, we need to determine the possible products when these ions combine. Since potassium (K+) has a +1 charge and iodide (I-) has a -1 charge, they can combine to form potassium iodide (KI):
K+ + I- -> KI
Similarly, magnesium (Mg2+) and sulfide (S2-) can combine to form magnesium sulfide (MgS):
Mg2+ + S2- -> MgS
Now, we can write the complete ionic equation by representing all the ions present before and after the reaction:
2K+ + S2- + Mg2+ + 2I- -> 2KI + MgS
To obtain the net ionic equation, we remove the spectator ions, which are the ions that appear on both sides of the equation and do not participate in the actual reaction. In this case, the spectator ions are the potassium ions (K+) and the iodide ions (I-).
Thus, the net ionic equation for the reaction between potassium sulfide and magnesium iodide is:
S2- + Mg2+ -> MgS
For more such questions on ionic equation visit:
https://brainly.com/question/25604204
#SPJ8
What Is The Name For CH3(CH2)4CH3
Answers
Answer:
hexane
I hope it's helps you
what is organic chemistry?
Answers
Answer:
Organic chemistry is the scientific study of the structure, properties, compositions, reactions and synthesis of organic compounds that by definition contains carbon.The organic compounds are molecules composed of carbon and hydrogen and it may contain any number of other elements.
Maybe this was your answer for your question.
Which layers of Earth are mostly made of solid material?
A) crust and inner core
B) crust and mantle
C) mantle and outer core
D) inner core and outer core
Answers
Explanation:
D. inner core and outer core
sort the following numbers according to whether they should be rounded up or down when rounding to the nearest tenth (the first digit after the decimal). drag the appropriate items to their appropriate bins.
Answers
The numbers that will be rounded up are 124.77, 7.077, 19.45 and 3.179 and the numbers which will be rounded down are 4.318, 8878.2403, 66.9106 and 5.84.
To round off the decimal numbers to their nearest tenths, we look at the number on the hundredth place. If that particular number is greater than 5, we add 1 to the tenth value. If the number is less than 5, we leave the tenth place value as it is, and we also remove all the numbers which are present after the tenth’s place.
The numbers which will be rounded up are 124.77, 7.077, 19.45 and 3.179 since the digit on the hundredth place are greater than 5. The numbers which will be rounded down are 4.318, 8878.2403, 66.9106 and 5.84 since the digit on the hundredth place is lower than 5.
To know more about round off here
https://brainly.com/question/17214000
#SPJ4
HURRY NEED NOW! Calcium has a charge of +2. The chart lists the charges of different ions.
Which are possible equations for an ionic compound with calcium?
CaO, CaMg, or CaF2
Ca2Cl, CaNa, or CaP
CaF, CaMg, or CaNa
CaO, CaF2, or CaCl2
Answers
Answer:
CaO, CaF2, or CaCl2
Explanation:
In an ionic compound, the charges need to balance out. This is the only set of compounds that fits this criteria.
Answer:
CaO CaF2 CaCl2 are ionic
Explanation:
Because electronegativity difference between calcium and other atom is more than 1.7
The density of 1 cm3
of water is 1g/cm3
. What is the density of 200 cm3
of pure water?
A student has 25 cubic centimeters of three liquids: blue water(density 1g/cm3
), olive oil (density 0.85 g/cm3
) and corn syrup (density 1.4 g/cm3
). She carefully pours them into a single graduated cylinder. Please predict what will happen.
Responses
Corn syrup on top, water in middle, and olive oil on bottom because oil is most dense.
Corn syrup on top, water in middle, and olive oil on bottom because oil is most dense.
Olive Oil on top, water in middle, and corn syrup on bottom because syrup is most dense.
Olive Oil on top, water in middle, and corn syrup on bottom because syrup is most dense.
It is not possible to predict.
It is not possible to predict.
Skip to navigation
Responses
Corn syrup on top, water in middle, and olive oil on bottom because oil is most dense.
Corn
A student has 25 cubic centimeters of three liquids: blue water(density 1g/cm3
), olive oil (density 0.85 g/cm3
) and corn syrup (density 1.4 g/cm3
). She carefully pours them into a single graduated cylinder. Please predict what will happen.
Responses
Corn syrup on top, water in middle, and olive oil on bottom because oil is most dense.
Corn syrup on top, water in middle, and olive oil on bottom because oil is most dense.
Olive Oil on top, water in middle, and corn syrup on bottom because syrup is most dense.
Olive Oil on top, water in middle, and corn syrup on bottom because syrup is most dense.
It is not possible to predict.
It is not possible to predict.
Skip to navigation
A student has 25 cubic centimeters of three liquids: blue water(density 1g/cm3
), olive oil (density 0.85 g/cm3
) and corn syrup (density 1.4 g/cm3
). She carefully pours them into a single graduated cylinder. Please predict what will happen.
Responses
Corn syrup on top, water in middle, and olive oil on bottom because oil is most dense.
Corn syrup on top, water in middle, and olive oil on bottom because oil is most dense.
Olive Oil on top, water in middle, and corn syrup on bottom because syrup is most dense.
Olive Oil on top, water in middle, and corn syrup on bottom because syrup is most dense.
It is not possible to predict.
It is not possible to predict.
Skip to navigation
A student has 25 cubic centimeters of three liquids: blue water(density 1g/cm3
, olive oil (density 0.85 g/cm3 and corn syrup (density 1.4 g/cm3
She carefully pours them into a single graduated cylinder. Please predict what will happen.
A Corn syrup on top, water in middle, and olive oil on bottom because oil is most dense.
B Olive Oil on top, water in middle, and corn syrup on bottom because syrup is most dense.
C It is not possible to predict.
Answers
The density of 200 cm^3 of pure water is 200 g / 200 cm^3 = 1 g/cm^3, and is the same as the density of 1 cm^3 of water.
b. A Corn syrup on top, water in middle, and olive oil on bottom because corn syrup has the highest density of 1.4 g/cm^3, followed by water with a density of 1 g/cm^3, and olive oil with a density of 0.85 g/cm^3.
So option A is correct.
What is density?Density is described as the substance's mass per unit of volume.
We were able to determine which substance will stay in its relative position using Archimedes' principle which states that the upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially, is equal to the weight of the fluid that the body displaces.
Learn more about density at: https://brainly.com/question/1354972
#SPJ1
How many moles are in 68.16 grams of NH3 ?
Answers
Answer:
4.002 mol is in 68.16 grams of NH3
4. One molecule of propanol contains a total of
flonsoona
(1) one -OH group
(2) two -CH3 groups
(3) three -OH groups
(4) three -CH3 groups
Answers
One molecule of propanol contains only one -OH group and not three -OH groups or three -CH3 groups.
The -OH group is attached to the central carbon atom and makes propanol a useful solvent and intermediate in organic chemistry.Propanol is a colorless liquid that belongs to the family of alcohols. It has the formula C3H8O, and it contains three carbon atoms, eight hydrogen atoms, and one hydroxyl group (-OH) attached to one of the carbons. One molecule of propanol contains only one -OH group, which is attached to the central carbon atom.
Thus, option (2) is the correct answer, and the other options are incorrect.The -OH group in propanol is responsible for its unique chemical and physical properties. It makes propanol soluble in water and other polar solvents and gives it a high boiling point of around 97°C. The hydroxyl group can also participate in chemical reactions, such as esterification, dehydration, oxidation, and reduction. For example, propanol can be oxidized to form propanal and then propanoic acid, which is a useful synthetic intermediate for many organic compounds.Apart from the -OH group, propanol also contains two other functional groups called methyl groups (-CH3). These are attached to the two carbon atoms adjacent to the central carbon. However, the question only asks about the number of -OH groups in propanol, so the methyl groups are irrelevant.
for such more questions on propanol
https://brainly.com/question/30086385
#SPJ8
1. How many ATOMS of carbon are present in 7.48 grams of carbon monoxide ?
Answers
Answer:
The answer is 1.61 × 10²³ atoms
Explanation:
To determine number of atoms, we will use the formula below
Number of atoms = number of moles (n) × avogadro's constant (6.02 x 10²³)
n was not provided, hence we will solve for n
n = mass/ molar mass
molar mass of carbon monoxide, CO (where C is 12 and O is 16) is 12 + 16 = 28
mass was provided in the question as 7.48
n = 7.48/28
n = 0.267
Hence,
number of atoms = 0.267 × 6.02 x 10²³
= 1.61 × 10²³ atoms
if the body is moving with uniform acceleration then, eng of motion are given as s = u+v/2+t
Answers
Yes, s = u+v/2+t, where s is the displacement, u is the beginning velocity, v is the end velocity, and t is the time required, is the equation of motion for a body travelling with uniform acceleration.
The basic law of motion, which states that a body's rate of change in displacement is directly proportional to its velocity, provides the basis for this equation. The equation of motion for a body travelling with constant acceleration, s = ut + 1/2at2, may be used to derive it.
The equation of motion for a body travelling with uniform acceleration is given by replacing the value of an as (v-u)/t and getting s = u+v/2+t. This formula is only accurate when the body's acceleration is constant and uniform.
Learn more about acceleration at:
https://brainly.com/question/12550364
#SPJ1
Calculate the molality when 35. 0 grams of mgcl2 is dissolved in 200. 0 g of solvent.
Answers
1.84mol/Kg
To find the moles of MgCl2;
Number of moles of MgCl2 = (mass of MgCl2) / (molar mass of MgCl2)
Number of moles of MgCl2 = 35.0 g / 95.21 g/mol
Number of moles of MgCl2 = 0.367 moles
We then convert mass of solvent in Kg.
Mass of solvent = 200.0 g
Mass of solvent = 0.200 kg
We can now calculate the molality:
Molality = (moles of solute) / (mass of solvent in kg)
Molality = 0.367 mol / 0.200 kg
Molality = 1.84 mol/kg
Therefore, the molality of the solution is 1.84 mol/kg.
To know more click on:-
https://brainly.com/question/30922107
Rough ER is connected to the nucleus membrane and to
Answers
Ribosomes are attached to the membrane of the ER, making it “rough.” The RER is also attached to the nuclear envelope that surrounds the nucleus. This direct connection between the perinuclear space and the lumen of the ER allows for the movement of molecules through both membranes.Answer:
Explanation:
TRUST
What mass of oxygen gas, O2, from the air is consumed in the combustion of 702 g of octane, C8H18, one of the principal components of gasoline?
Select one:
A. 13.22 g
O B. 25.0 g/mol
O C. 32.0 g
O D. 33.22 g/mol
O E. 39.0 g
Answers
The principal components of gasoline is 702 g of octane.
Thus, Crude oil and other petroleum liquids are used to create gasoline, a fuel. The majority of gasoline is utilized in car engines.
For retail sale at gas stations, finished motor gasoline is produced at petroleum refineries and blending facilities.
In order to create finished motor gasoline, petroleum refineries primarily produce gasoline blendstocks, which must be blended with other liquids. In order to create finished motor gasoline in various grades and formulas, gasoline blendstocks, finished gasoline, and fuel ethanol are combined at blending terminals.
Thus, The principal components of gasoline is 702 g of octane.
Learn more about Gasoline, refer to the link:
https://brainly.com/question/29991915
#SPJ1
When 2 moles of
H₂(g) react with
O2(g) to form
H₂O(g) according to the following
equation, 484 kJ of energy are
evolved.
2H2(g) + O2(g) → 2H₂O(g)
Is this reaction endothermic or
exothermic?
exothermic
What is the value of q? _____kj
Is this reaction endothermic or exothermic ?
Answers
This reaction is exothermic reaction and the q value is -484 kJ
An exothermic reaction is a chemical reaction that involves the release of energy in the form of heat or light
Here given reaction is
2H2(g) + O2(g) → 2H₂O(g)
In this reaction we can see that heat is released so if heat is released after completion of the reaction such reaction are called as exothermic reaction and thus given reaction is exothermic reaction
The fuel is hydrogen it react with oxygen from the air this is an exothermic reaction
So because of exothermic reaction ΔH = -ve
That why the q value is also negative so it is q = -484 kJ
Know more about reaction
https://brainly.com/question/14633556
#SPJ1
This is my question
Answers
Answer:
\( \\ \)
refer the three attached images for the respective answers.
hope helpful ~
If you need to design a technological solution to lack of water availability in a developing country, which of the following should you do before proposing a solution? invest the money to test your most promising design select the best of several possible designs build a model to test research scientific principles involved in water availability
Answers
Anwser:
Research scientific principles involved in water availability.
Explanation:
Before building or investment you always want to see and know what your up against and what the best way to help or solve is. Researching why there's a problem in water availability or/and the principals to water availability will help you see what the problem is with what's happening to and around the process and it's environment.
module 9 lesson 4: colligative properties slide 2: colligative properties when you add a to a , the properties of the resulting are different than those of the pure . these different properties are called . definition: colligative properties do not depend on , but they do depend on the . 3 colligative properties are: slide 3: number of solute particles ionic compounds break into their when they in solution, whereas compounds stay together as molecules. what is the number of particles a solute breaks into known as? what is the symbol? the the number of particles in the the greater the difference will be for the of the solution compared to the solvent. slides 4
Answers
The number of particles a solute breaks into is known as the van't Hoff factor (i) and is represented by the symbol i.
Colligative properties are properties of a solution that depend on the concentration of solute particles, but not on the nature of the solute. Three colligative properties are:
1. Lowering of freezing point: when a solute is added to a solvent, the freezing point of the resulting solution is lower than that of the pure solvent.
2. Elevation of boiling point: when a solute is added to a solvent, the boiling point of the resulting solution is higher than that of the pure solvent.
3. Osmotic pressure: solutions have an osmotic pressure, which is the pressure required to prevent the flow of solvent into the solution through a semipermeable membrane.
When an ionic compound dissolves in a solvent, it breaks into its individual ions, whereas non-ionic compounds stay together as molecules. The number of particles a solute breaks into is known as the van't Hoff factor (i) and is represented by the symbol i. The greater the van't Hoff factor, the greater the difference will be for the colligative properties of the solution compared to the solvent.
To know more about solute please refer: https://brainly.com/question/15757469
#SPJ4
Hello! Can someone tell me how fans function and work? And what fans do? Ill include an imagine below! Best answer gets brainliest
Answers
Answer:
How fans work....Instead of sucking in hot air and pushing it down, the fan sucks up cool air and pushes it higher. When the fan forces cool air higher, the cool air forces warm air down. Instead of giving you more access to cool air in your room, the fan gives you more access to the warm air, making you feel nice and cozy.
What fans do....A fan, or a breeze, helps by replacing this hot, humid air with cooler, drier air that allows for more evaporation. Similarly, even without sweat, our body loses heat to the surrounding air simply by convection. ... The breeze from the fan carries that hot air away and perpetuates the process, effectively cooling you off.
Explanation:
PLEASE HELP‼️‼️
A
B
C
D
Answers
Select the correct answer.
Your friend Keith has been in a dating relationship for six months. His personality has changed in these months. He looks unhappy and rarely smiles. He avoids the company of friends. On the rare occasions you have seen him, his face appears bruised. You suspect that Keith may be in an abusive relationship. What should you do in this case?
A.
avoid talking to Keith
B.
confront his dating partner
C.
encourage Keith to speak up and report abuse
D.
advise him to tolerate the abuse, as difficulties are a part of life
Answers
which of the following are considered biofuels? select all that apply. check all that apply cellulosic ethanolcellulosic ethanol grain ethanolgrain ethanol methane from sewage and manuremethane from sewage and manure natural gas from shalenatural gas from shale biodiesel from soybean oilbiodiesel from soybean oil wind energy wind energy coal
Answers
The cellulosic ethanol cellulosic ethanol grain ethanol grain ethanol methane are considered biofuels. The two most common biofuels used today are ethanol and biodiesel.
Both of which are the first generation biofuel technologies. The BETO is working with industry to develop next-generation biofuels from waste, the cellulosic biomass, and algae-based resources. Ethanol (often derived from corn in the United States and sugarcane in Brazil), biodiesel (derived from vegetable oils and liquid animal fats), green diesel (derived from algae and other plant sources), and the biogas are examples of the biofuels (methane derived from animal manure and other digested organic material).
To learn more about biofuels, click here.
https://brainly.com/question/502679
#SPJ4
How many moles of NO₂ would be required to produce 5.73 moles of HNO₃ in the presence of excess water in the following chemical reaction?
3 NO₂(g) + H₂O (l) → 2 HNO₃(g) + NO(g)
Answers
Answer:
8.595 mol NO2
Explanation:
5.73 mol HNO3 * \((\frac{3 mol NO2}{2 mol HNO3})\) = 8.595 mol NO2
Which of the following is the correct (and complete) formula for solid sodium sulfide? NaS₂ SOS NaS Na₂S (s) Na₂S
Answers
Consider the unbalanced chemical equation:
H2SO4 (aq) + Fe(OH)3 (S) → Fe2(SO4)3 (S) + H2O (L)
A volume of 38.0 mL of aqueous H2SO4 solution was required to
react completely with 0.685 g Fe(OH)3 (molar mass = 106.8 g/mol)
to produce Fe2(SO4)3. Calculate the molar concentration of the
H2SO4 solution.
A) 0.253 M
B) 0.344 M
C) 0.214 M
D) 0.301 M
E) 0.175 M
Answers
The answer is A. The explanation is in the image.
On the top of the image where it just says equation:, that is part of the sentence "First we need to balance the equation:"
Write the formulas for four different salts formed by ionic bonds between a single element of Group 2 and another
element of Group 17. (Please do not use polyatomic ions.)
Answers
The formula of the salts are;
CaF2, MgCl2, BaBr2, SrI2.
What is the formula of the salts?These salts are created when electrons move from a Group 2 element to a Group 17 element, creating negatively charged anions in Group 17 and positively charged cations in Group 2. The salts are held together by ionic bonds between these ions, which have opposing charges.
Chemical bonds known as ionic bonds are created when two atoms with vastly differing electronegativities come together. One atom, referred to as the cation, loses one or more electrons in an ionic bond, whereas the other atom, referred to as the anion, acquires those electrons.
Learn more about ionic bond:https://brainly.com/question/9075398
#SPJ1
What is the pH of a 3.5 x 10-5 M solution of HCl?
Answers
Answer:
pH = 4.45
Explanation:
We need to find the pH of \(3.5\times 10^{-5}\ M\) solution of HCl. We know that, pH of a solution is given by :
\(pH=-log[H]^+\)
Put all the values,
\(pH=-log[3.5\times 10^{-5}]\\\\pH=4.45\)
So, the pH of the solution of HCl is 4.45.
Bailee explained that when traveling to the moon, he needs to pack light because the weight of objects on the moon is the same as their
weight on Earth. The mass of the objects is what changes when the gravitational pull changes. Is Bailee correct in his explanation? (1 point)
O- Bailee is incorrect. The mass of the objects stay the same but weight will change.
O- Bailee is incorrect. Both the mass and weight will change.
O- Bailee is incorrect. Both the mass and weight will stay the same.
O- Bailee is correct. The weight of the objects stay the same but mass will change.
Answers
Answer: the answer is A.
Explanation:
Bailee explained that when traveling to the moon mass of the objects is which changes when the gravitational pull changes. Bailee is incorrect. Both the mass and weight will change. Option C is correct.
What are mass and weight?Mass is the physical quantity of any substance or object and weight is the measurement of amount of force acting on a particulate body of the mass.
At the moon both the mass and weight is divided by 6 means the mass and weight is six times lighter then the expected mass and weight on earth.
Therefore, Bailee is incorrect. Both the mass and weight will change. Option C is correct. which changes when the gravitational pull changes
Learn more about mass and weight, here:
https://brainly.com/question/28122305
#SPJ1