How many milliliters of 0.11 m solution could you prepare?
Answers
1954.0 milliliters of 0.11 m HCL (aq) are needed to prepare 215.0 mL of 1.00 M HCL solution.0.11 m is the Molarity of HCL.
What is S.I unit of Molarity?
The S.I Unit of Molarity is mol/dm3.
Solution:Given:
To prepare 215.0Ml of 1.0M HCL
215.0Ml into Litres=0.215 L
To Find, 0.11 m HCL (aq) are needed
To Find we use the following relationship:
.⇒ Molarity = no. of moles / no. of litres(L)
Rearranging the above for No. of Litres
We get ,
⇒ No. of Litres = No. of Moles/Molarity
⇒ No. of Litres=0.215/0.11
⇒ No. of Litres=1.954 L
Converting 1.954 L into ml =1954.0 ml
Hence, 1954.0 milliliters of 0.11 m HCL (aq) are needed to prepare 215.0 mL of 1.00 M HCL solution.
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I understand your complete question i.e. :
How many milliliters of 0.11 m HCL (aq) are needed to prepare 215.0 mL of 1.00 M HCL solution.
Related Questions
please hurry! :( according to boyle's law, what would happen to the pressure of a gas if the temperature were doubled as the number of moles and volume are held constant?
Answers
Answer:
A.
The hotter the object the faster the molecules so if the temperature is doubled the molecules go two times faster making the pressure double. Since the molecules are two times faster the pressure will be two times more because it is two times harder to keep the gas in.
Hope this helps
Explanation:
The letter designations for the first four sublevels with the maximum number of electrons that can be accommodated in each sublevel are?.
Answers
The letter designations for the first four sublevels with the maximum number of electrons that can be accommodated in each sublevel are : s:2, p:6, d:10, and f:14.
According to their energies, electrons are arranged into groups called shells (labeled by the principle quantum number, n). A shell's average distance from the nucleus increases with its energy in general. Subshells are smaller groups of electrons within a shell. One subshell is present in the first shell, two subshells are present in the second shell, three subshells are present in the third shell, and so on.
The letters s, p, d, and f are used to identify each shell's subshells in alphabetical sequence. Thus, the first shell only contains one s subshell (designated 1s), the second shell has two subshells (named 2s and 2p), the third shell has three subshells (called 3s, 3p, and 3d), and so on. The maximum number of electrons that can be held by a subshell varies. Any s subshell can hold up to 2 electrons; p, 6; d, 10; and f, 14.
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According to the nemst equation, when ecell = 0 then: _______
(A) Q=K (B) K=1 (C) AG=0 (D) Ecell = 0
Answers
According to the Nerst equation, when Ecell = 0 then : A) Q = K, the nerst equation is then :
log Keq = (n E°) / (0.0592 V)
The Nerst equation is given as follows :
E cell = E°cell - (0.0592 V / n ) log Q
the electrical potential of the cell is depend on the Q, that reaction quotient of the reaction. at equilibrium ΔG = 0 . the reaction quotient Q = K and from the equation , ΔG = -nFE , ans E = 0, now the nerst equation is given as :
0 = E° - ( RT / nF ) ln K
0 = E° - ( 0.0592 V / n) log K
log K = (n E°) / (0.0592 V)
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Please help if you know
Answers
Blue and red litmus paper (they’re natural indicators by the way, you can use methyl orange/phenolphthalein as well but litmus paper would be much easier)
If I were you, I would plan the experiment like that :
Procedure :
1. Prepare two test tubes and some blue and red litmus papers. Label the first test tube as A and the second one as B.
2. Pour the acid into test tube A and alkali into test tube B.
3. Using a dropper, extract some of the acid from test tube A and put a few drops on the blue and red litmus paper.
4. Record your observation.
5. Repeat steps 3 to 4 by using the alkali from test tube B.
The result with acid (Test tube A) :
The BLUE litmus paper turns RED. However the RED litmus paper DOES NOT show any changes.
The result with alkali (Test tube B) :
The BLUE litmus paper DOES NOT show any changes. However, the RED litmus paper changes to BLUE.
(I might made some mistakes here…I’m not confident with my answer but I hope it helps!)
Kindly answer it please
Answers
Answer:
See below ~
Explanation:
1. C. solid
2. B. tone quality
3. C. pitch
4. D. capable of producing its own light
5. D. stars
Answer:
1. C. solids
2. B. tone quality
3. A. pitch
4. D. capable of producing its own light
5. D. stars
cooking an egg is endothermic because the egg gains heat from the surrounding Formation of snow is exothermic because water loses heat to the surroundings wh becomes snow. Cooking an egg is exothermic because the egg loses heat to its surroundings.
Answers
Cooking an egg is endothermic because the egg gains heat from the surrounding and Formation of snow is exothermic because water loses heat to the surroundings wh becomes snow.
What is endothermic and exothermic ?Exothermic processes generate heat, which raises the temperature of the surrounding environment. Endothermic processes absorb heat and cool the environment."
Simply put, endothermic reactions absorb energy from their surroundings in the form of heat. An exothermic reaction, on the other hand, releases energy into the system's surroundings. Photosynthesis is a well-known example of an endothermic chemical reaction.
Thus, Cooking an egg is an endothermic process.
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Your question is incomplete, most probably your question was
Which of the following are exothermic and endothermic ?
cooking an egg is endothermic because the egg gains heat from the surrounding Formation of snow is exothermic because water loses heat to the surroundings wh becomes snow. Cooking an egg is exothermic because the egg loses heat to its surroundings.
Consider the following intermediate chemical equations.
CH₂(g) → C(s) + 2H₂(g)
ΔΗ, = 74.6KJ
CCl4(g) →C(s) + 2Cl₂(g)
AH₂ = 95.7 kJ
H₂(g) + Cl₂(g) → 2HCl(g)
AH₂=-92.3 KJ
What is the enthalpy of the overall chemical reaction CH4(g)+4Cl₂(g) → CCl4(g) + 4HCI(g)?
O-205.7 kJ
O-113.4 kJ
O-14.3 kJ
O 78.0 kJ
Answers
Based on the calculations, the enthalpy of the overall chemical reaction is equal to: C. -14.3 kJ.
What is a chemical reaction?A chemical reaction can be defined as a chemical process that involves the continuous transformation (rearrangement) of the ionic, atomic or molecular structure of a chemical element by breaking down and forming chemical bonds, in order to produce a new chemical compound while new bonds are formed.
What is a chemical equation?A chemical equation can be defined as a group of chemical symbols that is typically used in chemistry to represent the chemical reaction between two (2) or more chemical elements.
Mathematically, an expression for enthalpy of the overall chemical reaction is given by:
ΔHrxn = (n × ΔH₃) + (-n × ΔH₁) + (n × ΔH₂)
Where:
n represents the number of moles.
Substituting the given points into the formula, we have;
ΔHrxn = (2 × ΔH₃) + (-1 × ΔH₁) + (1 × ΔH₂)
ΔHrxn = (2 × (-92.3)) + (-1 × (-74.6)) + (1 × (-95.7))
ΔHrxn = -184.6 + 74.6 + 95.7
ΔHrxn = -14.3 kJ.
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the higher the ph number the higher the concentration of
Answers
The higher the pH number the lower the concentration of hydrogen ions in a solution.
The higher the pH number, the lower the concentration of hydrogen ions (H⁺) in a solution. pH is a logarithmic scale that measures the acidity or alkalinity of a solution. It ranges from 0 to 14, where 7 is considered neutral, values below 7 indicate acidity, and values above 7 indicate alkalinity.
In an aqueous solution, pH is a measure of the concentration of hydrogen ions (H⁺). A low pH value indicates a high concentration of H⁺ ions, which corresponds to a more acidic solution. As the pH value increases, the concentration of H⁺ ions decreases, indicating a more alkaline (basic) solution.
The relationship between pH and the concentration of H⁺ ions can be understood using the concept of the pH scale and the logarithmic nature of pH calculations. Each unit change in pH represents a tenfold change in the concentration of H⁺ ions. For example, a solution with a pH of 3 has ten times more H⁺ ions than a solution with a pH of 4. Similarly, a solution with a pH of 10 has ten times fewer H⁺ ions than a solution with a pH of 9.
Therefore, as the pH number increases, the concentration of H⁺ ions decreases, and the solution becomes less acidic and more alkaline.
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The complete question is:
The higher the pH number the lower the concentration of ____ in a solution?
for centuries scholars have argued over how to (select a word) certain cryptic passages in milton’s plays and poems.
Answers
for centuries scholars have argued over how to explicate certain cryptic passages in Milton’s plays and poems.
What is a cryptic passages?Cryptic Passage (originally titled as Passage to Transylvania) is described as the first expansion pack for Blood developed by Sunstorm Interactive and released in June 30, 1997.
The first of Blood's two expansion packs is called Cryptic Passage.
The expansion, unlike the Plasma Pak, was created by a third party, Sunstorm Interactive, and it was released by WizardWorks Software; as a result, it doesn't have any bug patches or new features.
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Why does it make sense that stars and planets form before atoms?
Answers
Answer:
it doesn't make sense bro. how are they gonna form before atoms if they are made out of atoms? everything is
Explanation:
Under the influence of gravity, atoms came together and resulted in a blast causing the "big bang". So the statement is false as stars and planets are formed due to the colliding of atoms.
What is the big bang theory?
About 13.7 billion years ago, the universe underwent a dramatic expansion that caused space to expand like a huge balloon.
That sums up the Big Bang idea, which is accepted by almost all cosmologists and theoretical physicists. The theory is backed up by a lot of strong data. For instance, we are aware that the universe is still expanding right now, and that this expansion is speeding up.
According to the conventional Big Bang theory, the beginning of the universe involved a singularity, a region of infinite temperature and density whose nature is difficult for humans to comprehend. However, scholars assert that this may not truly reflect reality because the singularity idea is based on Einstein's theory of general relativity.
The origin of the cosmos is still mostly unknown. A trillionth of a second after the Big Bang, according to scientists, is where the tale may be picked up.
Therefore, the statement is false.
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. n specifies fill in the blank 4 l specifies fill in the blank 5 ml specifies fill in the blank 6 ... a.the orbital orientation. b.the energy and average distance from the nucleus. c.the subshell - orbital shape.
Answers
n specifies B. The energy and average distance from the nucleus, l specifies C. The subshell - orbital shape, ml specifies A. The orbital orientation.
n is known Principal quantum number
l is known Azimuthal quantum number
ml is known Magnetic quantum number
The energy and usual distance from the nucleus are described by the fundamental quantum number, or n.
The subshell and orbit's shape are described by the orbital quantum number, or l.
The orbit's direction is described by the magnetic quantum number, ml.
So, n specifies B. The energy and average distance from the nucleus.
l specifies C. The subshell - orbital shape.
ml specifies A. The orbital orientation.
Thus, n specifies B., l specifies C., ml specifies A.
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Bài 1. Lập phương trình hóa học của các phản ứng sau:
a, Cho kẽm tác dụng với khí oxi thu được kẽm oxit ( ZnO)
Answers
he removal of the alcohol seen in the conversion of the nasal decongestant pseudoephedrine to the illicit drug methamphetamine (alluded in the hit TV show Breaking Bad), constitutes what type of process? Your answer Reduction Oxidation Neither
Answers
The removal of the alcohol seen in the conversion of the nasal decongestant pseudoephedrine to the illicit drug methamphetamine constitutes reduction process.
Redox is a type of chemical reaction in which the oxidation states of substrate change. Oxidation is the loss of electrons or an increase in the oxidation state, while reduction is the gain of electrons or a decrease in the oxidation state. The removal of the alcohol seen in the conversion of the nasal decongestant pseudoephedrine to the illicit drug methamphetamine constitutes reduction process. The “Birch method” is a chemical reduction reaction to convert pseudoephedrine in base form into methamphetamine. The “Red Phosphorous method” is a chemical reduction reaction utilizing red phosphorus/hydriodic acid chemistry to convert pseudoephedrine to methamphetamine.
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C4H10+ 02 → CO2 +H2O
balance the equation
Answers
Answer:
C4H10 + 502 -> CO2 + 5H20
......
.......
Which element would have a full outer shell of electrons if it gained three electrons?
A. Lithium
B. Nitrogen
C. Argon
D. Boron
Answers
Answer:
Octet Rule is defined as the chemical rule in which atoms tend to form bonds in such a way that it completes its valence shell or tend to achieve the configuration of a noble gas.
Explanation:
The lithium is chemical element, which has atomic number 3. It has one valence electron in its outermost shell, therefore, it will require 7 more electrons to complete its octet.
The element nitrogen has the atomic number 7, such that it has 5 valence electrons in its outer most shell. Therefore, it will require 3 more electrons to complete its octet.
The noble gas Argon have complete octet, such that it does not require any electrons to complete its octet. the gas is inert and non-reactive.
The chemical element Boron has atomic number 5, such that it has three electrons in its outer most shell. Therefore, it will require 5 more electrons to complete its octet.
Hence, the correct option is Nitrogen.
To answer this question, we will have to make reference to the octet rule in chemistry whereby atoms lose, gain or even share electrons in order to achieve the configuration of a noble gas nearest to it on the periodic table.
From the octet rule, the first shell of elements can accommodate a maximum of two electrons, while the second and third can accommodate a maximum of 8 each while the fourth can accommodate a maximum of 2.
The element that would have a full outer shell of electrons if it gained three electrons is NITROGEN.
A. The element Lithium from the periodic table has atomic number of 3.
This means that the first shell can take a maximum of 2 thereby leaving only one for the second and outermost shell. For it to become a noble gas, it will need to gain 7 electrons in its second shell to achieve the maximum of 8
B. The element nitrogen from the periodic table has an atomic number of 7. This means that after the first shell, it will have 5 electrons left in its outermost shell. For it to become a noble gas, it will need to gain 3 electrons in its outermost shell to achieve the maximum of 8 electrons
C. The element Argon from the periodic table is a noble gas with atomic number of 18 and from the definition of the octet rule, it doesn't require more electrons in it's outermost shell.
D. The element Boron from the periodic table has an atomic number of 5. This means that after the first shell, it will have 3 electrons left in its outermost shell. For it to become a noble gas, it will need to gain 5 electrons in its outermost shell to achieve the maximum of 8 electrons
Thus, the correct answer is Nitrogen which is Option B.
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Calculate the approximate volume of a 0.500 mol sample of gas at 15°C and a pressure of 1.10 atm.
Answers
Apply ideal gas equation
PV=nRTV=nRT/PV=0.5(8.314)(298)/1.1V=1126.16mLV=1.12LAnswer:
11.97 L
Explanation:
Given :
⇒ Number of moles, n = 0.5 mol
⇒ Temperature, T = 15 °C = 288 K
⇒ Pressure, P = 1.1 atm
Solving using Ideal Gas Equation :
⇒ PV = nRT
⇒ V = 0.5 × 8.314 × 288 / 1.1
⇒ V = 144 × 8.314 / 1.1
⇒ V = 1197.216 m³ = 11.97 L (approx.)
65g of nitric acid are produced in a reaction. 2.5g of platinum are added to the reaction vessel at the start of the reaction to act as a catalyst. How much platinum will there be left in the vessel at the end of the reaction?
Answers
Answer:
2.5 g of platinum
Explanation:
Recall that a catalyst is a specie added to a reaction system to increase the rate of reaction. A catalyst does not participate in the chemical reaction hence it remains unchanged at the end of the chemical reaction. A catalyst merely provides an alternative reaction pathway by lowering the activation energy of the reaction system. Hence a catalysed reaction usually proceeds faster with less energy requirement than the uncatalysed reaction.
Since the catalyst does not participate in the reactions and remains unchanged at the end of the reaction, the mass of platinum will remain the same (2.5g). The mass can only change if a specie participates in the chemical reaction. Hence the answer.
2.5 g of platinum will there be left in the vessel at the end of the reaction
The following information should be considered:
Since the catalyst does not participate in the reactions and remains the same at the end of the reaction, the mass of platinum will remain the same (2.5g). The mass can only change in the case when a specie participates in the chemical reaction.learn more: https://brainly.com/question/2514933?referrer=searchResults
calculate the molecular weight of CaCO3.
Answers
Answer:
Explanation:
CaCO3 = 1*Ca + 1*C + 3*O
=1*40 + 1*12 + 3*16
=40 + 12 + 48
=100 amu
4. How many moles of KBr are found in 3 Liters of 0.4 M solution?
A.7.1moles
B. 43.9moles
C. 2.6moles
D 1.2 moles
Answers
There are 1.2 moles of KBr found in 3 Liters of 0.4 M solution.
HOW TO CALCULATE NUMBER OF MOLES?The number of moles of a substance can be calculated by multiplying the molarity by the volume.
No. of moles = Molarity × volume
According to this question, 3L of a KBr solution are contained in a 0.4M.
no. of moles = 3L × 0.4M = 1.2moles
Therefore, there are 1.2 moles of KBr found in 3 Liters of 0.4 M solution.
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How would you characterize a liquid?
a. Has a fixed volume
b. Has a fixed shape
C. Takes the shape of a container
D. Both a and c
Answers
Answer:
The correct answer is D!
Explanation:
Liquids have a fixed shape and fixed volume. Liquids take the shape of their containers. Hope you have a great dayy!
When gravity is the only force acting on an object, the object is said to be in__.
Answers
Will give BRAINLY if right
Which response is specific to the presence of pathogens in the body?
inflammation
vaccination
production of antibodies
production of viruses
Answers
Answer:
production of antibodies
Answer:
C
Explanation:
The body will start to make antibodies to rid of the "invasion".
So the answer is C
A gas that has a volume of 15 liters, a temperature of 51°C, and an unknown pressure has its volume increased to 25 liters and its temperature decreased to 41°C. If I measure the pressure after the change to be 3.9 atm, what was the original pressure of the gas?
Answers
answer and explanation
we are given:
V1= 15 l
T1 = 51 deg
P1 = ?
P2= 3.9 atm
V2= 25 litres
T2 = 41 deg
we can use the combine gas equation to find initial
P1V1/T1 = P2V2/T2
we can the rearrange the equation to make P1 the subject of the equation
P1 = P2V2T1/V1T2
= 3.9 x 25 x 51 / 15 x41
= 8.1 atm
the initial pressure of the gas was 8.1 atm
What is this mixture made up from? Please answer correctly !!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!
Answers
A solution is just a specific type of mixture, in particular it is a homogeneous mixture in liquid form.
Hope that helped!
which region of a functional immunoglobulin would most likely contain carbohydrate residues to form the mature ig glycoprotein?
a. Constant light chain regions
b. Variable heavy chain regions
c. Constant heavy chain region CH1
d. Constant heavy chain region CH2
e. Constant heavy chain region CH3
Answers
Regularly dense chain region The mature ig glycoprotein is formed from carbohydrate residues found in the CH3 region of both a functional immunoglobulin.
Is ch3 a COOH?Acetic acid (CH3COOH), also referred to as ethanoic acid, is the most major carboxylic acid. Acetate is a diluted (approximately 5% by weight) acetic acid solution produced by the fermentation and oxidation on natural carbohydrates. It is a salts, ester, & acylal of acetic acid, just like vinegar.
How stable is CH3?Our research reveals the CH3 homodimer to be an extremely stable complex, and also its separation force of >150 pN at such a loading rate of 5500 pN/s surpasses the stability of the majority of protein-protein interactions examined thus far. On the other hand, separated CH3 monomers are transient and mechanically labile.
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List a correct order the organs through which foods pacs from the mouth to the anus. b.state the ration of a balance ration for feeding poultry.
c.predict the product from when.
(I) magnesium solution react with dilute hydrochloric acid.
(ii) potassium meet with water
Answers
Mg + HCl → MgCl2 + H2. Salt and hydrogen gas are created when metal and acid combine. Magnesium produces hydrogen gas.
Thus, Salt and hydrogen gas are created when metal and acid combine. Magnesium produces hydrogen gas and magnesium chloride salt when it combines with diluted hydrochloric acid.
The gas produced by the reaction of magnesium with diluted HCl is hydrogen gas. The gas produced by the reaction of magnesium with diluted HCl is hydrogen gas.
The experiment produces very flammable hydrogen gas. No ignition source should be available to students.
Thus, Mg + HCl → MgCl2 + H2. Salt and hydrogen gas are created when metal and acid combine. Magnesium produces hydrogen gas.
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Beryllium carbide (Be2C) reacts with water (H2O) to produce methane (CH4) and beryllium hydroxide (Be(OH)2). The unbalanced chemical equation for this reaction can be written as the following. Be2C + H2O → CH4 + Be(OH)2 Balance the chemical equation.
Answers
Answer:
The chemical equation Be₂C + 2H₂O → 2CH₄ + 2Be(OH)₂ is now balanced, with an equal number of atoms on both sides of the equation.
Explanation:
To balance the chemical equation Be₂C + H₂O → CH₄ + Be(OH)₂, we need to make sure that the number of atoms of each element is the same on both sides of the equation.
Let's start by balancing the carbon (C) atoms. There are two carbon atoms on the left side (in Be₂C) and one carbon atom on the right side (in CH₄). To balance the carbons, we can put a coefficient of 2 in front of CH₂:
Be₂C + H₂O → 2CH₄ + Be(OH)₂
Next, let's balance the hydrogen (H) atoms. There are four hydrogen atoms on the right side (in 2CH₄) and two hydrogen atoms on the left side (in H₂O). To balance the hydrogens, we can put a coefficient of 2 in front of H₂O:
Be₂C + 2H₂O → 2CH₄ + Be(OH)₋₂
Now, let's balance the beryllium (Be) atoms. There are two beryllium atoms on the left side (in Be₂C) and one beryllium atom on the right side (in Be(OH)₂). To balance the berylliums, we can put a coefficient of 2 in front of Be(OH)₂:
Be₂C + 2H₂O → 2CH₄ + 2Be(OH)₂
Finally, check if the equation is balanced. Counting the atoms, we have:Be:
2 on both sides
C: 2 on both sides
H: 4 on both sides
O: 4 on both sides
The chemical equation Be₂C + 2H₂O → 2CH₄ + 2Be(OH)₂ is now balanced, with an equal number of atoms on both sides of the equation.
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Which structures join with the cell’s membrane during exocytosis?
Answers
Answer:Exocytosis is also used to integrate new proteins into the cell membrane. In this process, the new protein is formed inside the cell, and migrates to phospholipid bilayer of the vesicle. The vesicle, containing the new protein as a part of the phospholipid bilayer, fuses with the cell membrane.
Explanation:
The reaction below shows how the potential energy changes during a phase
change. What does the red arrow show?
Potential Energy
Reaction Progress
A. The change in enthalpy is positive, and the reaction is
endothermic.
B. The change in enthalpy is negative, and the reaction is exothermic.
C. The activation energy is negative, and the reaction is exothermic.
D. The activation energy is positive, and the reaction is endothermic.
Answers
Answer:
the red arrow shows that the change in enthalpy is positive
From the energy diagram, it is clear that, the enthalpy of the reaction is positive and it is an endothermic reaction.
What is an endothermic reaction ?An endothermic reaction is a chemical reaction that absorbs heat from its surroundings, resulting in a decrease in temperature of the surroundings. In other words, energy is taken in by the reaction from the environment.
During an endothermic reaction, the reactants absorb energy in the form of heat, light, or electricity to break the bonds between their atoms and form new bonds to create products.
The amount of energy absorbed by the reactants is greater than the energy released by the products. This energy difference is usually expressed as the enthalpy change (∆H) of the reaction, which is positive for endothermic reactions.
Here, the energy of products is higher than that of reactants and hence option A is correct.
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what's the molar mass of Li3p
Answers
Answer:
51.79g Li₃P.
Explanation:
Li has a molar mass of 6.94 g (since there are 3, you multiply it 3 times) and P has a molar mass of 30.97 g. 6.94(3) + 30.97 = 51.79g.