# What minimum amount of 1.65 M HCl is necessary to produce

Get college assignment help at uniessay writers What minimum amount of 1.65 M HCl is necessary to produce 33.5 L of H2 at STP?

## Write the formula for the conjugate acid of each of the

Write the formula for the conjugate acid of each of the following bases: C5H5N

## Why do secondary halides only react (with sodium iodide in acetone

Why do secondary halides only react (with sodium iodide in acetone and sodium nitrate in ethanol) upon heating?

## A 28.0-g sample of water at 270. K is mixed with

A 28.0-g sample of water at 270. K is mixed with 47.0 g water at 340. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.

## A buffer solution is 0.080 M in lactic acid (Ka =

A buffer solution is 0.080 M in lactic acid (Ka = 1.8  104) and 0.070 M in sodium lactate. The pH of the solution is

## At body temperature (98.6F = 37.0C), Kw has the value 2.4X10^14.

At body temperature (98.6F = 37.0C), Kw has the value 2.4X10^14. If the pH of blood is 7.4 under these conditions, what are the concentrations of H3O and OH-?

## How many liters of {rm H_2} would be formed at 550

How many liters of {rm H_2} would be formed at 550 {rm mm Hg} and 13^circ {rm C} if 26.5 {rm g} of zinc was allowed to react?

## The molar heats of sublimation and fusion of iodine are 62.3

The molar heats of sublimation and fusion of iodine are 62.3 kJ/mol and15.3 kJ/mol, respectively. Calculate the molar heat of vaporization of liquid iodine. Answer

## Aluminum sulphate is used in sand paper, among other uses. How

Aluminum sulphate is used in sand paper, among other uses. How many g of aluminum oxide dihydrate will be needed to produce 500 g of aluminum sulphate by the (unbalanced) reaction below? Al2O3 •2H2O H2SO4 Al2(SO4)3 H2O

## In a coffee-cup calorimeter, 1.80 g of NH4NO3 is mixed with

In a coffee-cup calorimeter, 1.80 g of NH4NO3 is mixed with 75.0 g of water at an initial temperature of 25.00°C. After dissolution of the salt, the final temperature of the calorimeter contents is 23.93°C. Assuming the solution has a heat capacity of 4.18 J/°C·g and assuming no heat loss to the calorimeter, calculate the enthalpy change for the dissolution of NH4NO3 in units of kJ/mol.

## For each of the following unbalanced equations, indicate how many moles

Get college assignment help at uniessay writers For each of the following unbalanced equations, indicate how many moles of the second reactant would be required to react exactly with 0.275 mol of the first reactant. Show all work below. a.) Cl2(g) KI(aq) —> I2(s) KCl(aq) b.) Co(s) P4(s) —> Co3P2(s) c.) Zn(s) HNO3(aq) —> Zn(NO3)2(aq) H2(g) d.) C5H12(l) O2(g) —> CO2(g) H2O(l)

## a student found that her mixture was 13% NH4CL, 18% NaCl,

a student found that her mixture was 13% NH4CL, 18% NaCl, and 75% SiO2. Assuming that her calculatios are correct, what did she most likely do incorrectly in her experiment?

## A) Consider the following reactions involving deuterated reagents picture attached- Draw

A) Consider the following reactions involving deuterated reagents picture attached- Draw the skeletal structure of the major organic product. (All hydrogen atoms are implied, but any deuterium isotopes must be shown where appropriate. If a chiral carbon atom is attached to a hydrogen atom, you should not show the hydrogen atom but use either a wedge or dashed bond and two sticks to establish stereochemistry where appropriate.)

## Draw the skeletal structure of the major organic product resulting from

Draw the skeletal structure of the major organic product resulting from the following reaction. (All hydrogen atoms are implied. If a chiral carbon atom is attached to a hydrogen atom, you should not show the hydrogen atom but use either a wedge or dashed bond and two sticks to establish stereochemistry where appropriate.) see attachment ..

## A neutral atom has a ground state electronic configuration designated 1s2

A neutral atom has a ground state electronic configuration designated 1s2 2s2 2p2. Which of the following statements concerning this atom is/are true?

## draw the Lewis Structure for NF4

draw the Lewis Structure for NF4

## To identify a diatomic gas x2 a research carried out the

To identify a diatomic gas x2 a research carried out the following experiment: She weighed an empty 1 L bulb, then filled it with the gas at 1.10 atm and 23.0 C and weighed it again. The difference in mass was 1.27 g. Identify the gas.

## how much heat is released or absorbed in the reaction of

how much heat is released or absorbed in the reaction of 10 grams of SiO2 (quartz) with excess hydrofluoric acid?

## The formation of CsCl from Cs(s) and Cl2(g) involves the following

The formation of CsCl from Cs(s) and Cl2(g) involves the following steps: 1.Cs(s)-Cs(g) 2.1/2 Cl2(g)-Cl(g) 3.Cs(g) 砲s^ (g) e^- 4.Cl(g) e^- – Cl^-(g) 5.Cs^ (g) Cl^-(g)-CsCl(s) Which of these steps absorb energy and which release energy?

## THe following compounds are isomers with formula C10H12O. Their infrared spectra

THe following compounds are isomers with formula C10H12O. Their infrared spectra show strong bands near 1715 cm^-1 and in the range from 1600 cm^-1 to 1450 cm^-1. Draw their structures.

## What volume of 6.00 M HCl is required to react with

What volume of 6.00 M HCl is required to react with excess NaCN to produce enough HCN to fill a room with a volume of 27.0m^3 at a pressure of 0.987 atm and 23.0C?

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