General Chemistry Answers

If pressure is expressed in atmospheres and volume is expressed in liters, PΔV has units of L atm (liters × atmospheres). Remember that 1 atm = 101,325 Pa, and that 1 L = 1 dm³. Use this information to determine the number of joules corresponding to 2 L atm.

What is the solution of measuring 25ml of a0.2 hydrochloric acid into a conical flask and titrated with sodium hydroxide.It was found that 15ml of sodium hydroxide was needed to neutralize the acid.(a)Write a balanced chemical equation for the reaction.(b)calculate the concentration of the sodium hydroxide solution.(c).Calculate the ph of the acid is 1.4×10^-5M.

Calculate the rate at the instant when [A]=2×10-⁴, [B]= 3×10-⁴, and [C]=2×10-³

The equilibrium mixture is found to contain 0.07, 0.11,0.03 and 0.03 moles of CO ,H2, CH4, H2O respectively for the reaction:

CO(g)+3H2(g)0. CH4=H2O(g)

You need to make an aqueous solution of 0.140 M potassium nitrate for an experiment in lab, using a 125 mL volumetric flask.

How much solid potassium nitrate should you add?

blank grams

In the laboratory you dissolve 18.5 g of nickel(II) bromide in a volumetric flask and add water to a total volume of 125 . mL.  

What is the molarity of the solution?    M

What is the pH of the solution containing 0.20 M NH3 and 0.15 M NH4Cl?

Calculate the pH of a buffer made from 0.28 M HNO2 and 0.23 M NO2-. The Ka for HNO2 is 4.6×10-4

A mixture of 0.100 mol of NO, 0.050 mol of H2 and 0.10 mol of H2O is placed in a 1.0L vessel at 300 K. The following equilibrium is established: 2 NO(g) + 2 H2O(g). At equilibrium [NO] = 0.062 M. Calculate the equilibrium concentrations of a.) H2, b.) N2 and c.) H2O and d.) Kc.

At what temperature in Fahrenheit will a 830grams Carbon dioxide occupies a volume of 390L at 1900 torr?