General Chemistry Answers

What is the pressure of 3.5 miles of gas at 1.1 kilo pascals and 420 Kel

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.