Questions
An aqueous solution of ___ will produce a neutral solution? a. RbBr b. LiNO2 c. LiF...

An aqueous solution of ___ will produce a neutral solution?

a. RbBr

b. LiNO2

c. LiF

d NH4ClO4

e. Rb2CO3

In: Chemistry

Rank these forces from weakest to strongest: dispersion, dipole-dipole, H-bonds, dipole-induced dipole, ion-induced dipole, and ion-dipole.

Rank these forces from weakest to strongest:

dispersion, dipole-dipole, H-bonds, dipole-induced dipole, ion-induced dipole, and ion-dipole.

In: Chemistry

Use the rules (in order) to assign oxidation numbers to each of the elements in the...

Use the rules (in order) to assign oxidation numbers to each of the elements in the compounds below.

hydroxylamine H N O
NH2OH ___-7-6-5-4-3-2-10+1+2+3+4+5+6+7 ___-7-6-5-4-3-2-10+1+2+3+4+5+6+7 ___-7-6-5-4-3-2-10+1+2+3+4+5+6+7
magnesium bromide Br Mg
MgBr2 ___-7-6-5-4-3-2-10+1+2+3+4+5+6+7 ___-7-6-5-4-3-2-10+1+2+3+4+5+6+7
boric acid H B O
H3BO3

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Solve an equilibrium problem (using an ICE table) to calculate the pH of each of the...

Solve an equilibrium problem (using an ICE table) to calculate the pH of each of the following solutions.

1.0.17M CH3NH2

.17M CH3NH3Cl

a mixture that is 0.17M in CH3NH2

and 0.17M in CH3NH3Cl

In: Chemistry

When solutions of silver nitrate and calcium chloride are mixed, silver chloride precipitates out of solution...

When solutions of silver nitrate and calcium chloride are mixed, silver chloride precipitates out of solution according to the equation

2AgNO3(aq)+CaCl2(aq)?2AgCl(s)+Ca(NO3)2(aq)

Part A

What mass of silver chloride can be produced from 1.35L of a 0.166M solution of silver nitrate?

Express your answer with the appropriate units.

mass of AgCl =

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Part B

The reaction described in Part A required 3.38L of calcium chloride. What is the concentration of this calcium chloride solution?

Express your answer with the appropriate units.

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In: Chemistry

In an experiment, an acidic compound is separated from the contaminant (either a basic or neutral...

In an experiment, an acidic compound is separated from the contaminant (either a basic or neutral compound) using liquid-liquid extraction.

List of organic extraction solvents available:

- Dichloromethane

- Diethyl ether

- Ethanol

- Ethyl acetate

- Hexanes

- Methanol

- 3 M HCl

- 3 M NaOH

What will be your approach to determining the best extraction solvent to use in this experiment from the possible organic solvents listed?

In: Chemistry

IV) Many enzymes obey simple Michaelis-Menten kinetics, which are summarized by the equation: rate = (V...

IV) Many enzymes obey simple Michaelis-Menten kinetics, which are summarized
by the equation:
rate = (V max [S])/([S]+K m ); where V max = maximum velocity, [S] = concentration
of substrate; and K m = the Michaelis constant.
It is instructive to plug in a few values of [S] into the equation to see how rate is
affected. What are the rates for [S] equal to zero, equal to K m , and equal to infinite
concentration? Show all work.

In: Chemistry

In a bromine-producing plant, how many liters of gaseous elemental bromine at 277?C and 0.935 atm...

In a bromine-producing plant, how many liters of gaseous elemental bromine at 277?C and 0.935 atm are formed by the reaction of 450. g of sodium bromide and 205 g of sodium bromate in aqueous acid solution? (Assume no Br2 dissolves ad that sulfuric acid is present in large excess.)

5NaBe+NaBrO3+3H2SO4 -> 3 Br2+3Na2SO4+3H2O

In: Chemistry

Calculate the pH of the solution that results from each of the following mixtures. 55.0 mL...

Calculate the pH of the solution that results from each of the following mixtures.

55.0 mL of 0.16 M HCHO2 with 75.0 mL of 0.13 M NaCHO2

125.0 mL of 0.11 M NH3 with 250.0 mL of 0.11 M NH4Cl

In: Chemistry

C6H14(l) + Br2(l) + light → C6H13Br(l) + HBr(g) How do I explain this reaction?

C6H14(l) + Br2(l) + light → C6H13Br(l) + HBr(g) How do I explain this reaction?

In: Chemistry

Phosphorus pentachloride decomposes according to the chemical equation PCL5(g)<--->PCl3(g)+Cl2(g). Kc=1.80 at 250 C. A 0.220 mol...

Phosphorus pentachloride decomposes according to the chemical equation PCL5(g)<--->PCl3(g)+Cl2(g). Kc=1.80 at 250 C. A 0.220 mol sample of PCl5(g) is injected into an empty 3.00 L reaction vessel held at 250 �C. Calculate the concentrations of PCl5(g) and PCl3(g) at equilibrium.

In: Chemistry

23.balance Al2O3(s)+NaOH(i)+Hf(g)--> Na3AlF6+H2O(g) a. If 11.1 kilograms of Al2O3(s), 59.4 kilograms of NaOH(l), and 59.4 kilograms...

23.balance Al2O3(s)+NaOH(i)+Hf(g)--> Na3AlF6+H2O(g)

a. If 11.1 kilograms of Al2O3(s), 59.4 kilograms of NaOH(l), and 59.4 kilograms of HF(g) react completely, how b. many kilograms of cryolite will be produced?

c. Which reactants will be in excess?

What is the total mass of the excess reactants left over after the reaction is complete?

In: Chemistry

A. You mix a 125.5 mL sample of a solution that is 0.0111 M in NiCl2...

A. You mix a 125.5 mL sample of a solution that is 0.0111 M in NiCl2 with a 183.0 mL sample of a solution that is 0.225 M in NH3

After the solution reaches equilibrium, what concentration of Ni2+(aq) remains? (Formation constant is Kf=2.0×108.)Express your answer with the appropriate units.

B. A 120.0 −mL sample of a solution that is 2.7×10−3 M in AgNO3 is mixed with a 230.0 −mL sample of a solution that is 0.10 M in NaCN.

After the solution reaches equilibrium, what concentration of Ag+(aq) remains?

Express your answer using two significant figures.

In: Chemistry

Classify each statement about effective nuclear charge, Zeff, as true or false. -Effective nuclear charge increases...

Classify each statement about effective nuclear charge, Zeff, as true or false.

-Effective nuclear charge increases from left to right across a period on the periodic table

-Across a period, as Zeff increases, atomic size increases

-in a N atom, a 1s electron has a great Zeff than a 2s electron

-Effective nuclear charge does not depend on the number of electrons present in an atom

-Electrons in a s orbital are more effective than those in other orbitals at shielding other electrons from the nuclear charge
-a 1s electron in a B atom has a smaller Zeff than a 1s electron in a Be atom

In: Chemistry

A beaker with 125 mL of an acetic acid buffer with a pH of 5.00 is...

A beaker with 125 mL of an acetic acid buffer with a pH of 5.00 is sitting on a bench top. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 8.90 mL of a 0.350 MM HCl solution to the beaker. How much will the pH change? The pKa of acetic acid is 4.760.

In: Chemistry