General Chemistry Answers

For the hypothetical reaction A + B ==> Products, the following initial rates of reaction have been measured for the given reactant concentrations.

What is the rate law expression for this reaction? Solve the problem. Show your work.

Test 1 = [A](M) 0.010, [B](M) 0.020, Rate (mol/(L x hr)) 0.0120

Test 2 = [A](M) 0.015, [B](M) 0.010, Rate (mol/(L x hr)) 0.010

Test 3 = [A](M) 0.010, [B](M) 0.020, Rate (mol/(L x hr)) 0.005

Balance the REDOX reaction

1. K₂Cr₂O7+ H2O ------- SO₂+ KOH +Cr₂03

2. FeSO4 +KI + KCLO3 ------- Fe(OH)2 )K2 SO4 + 12

How many moles of gas are in a 30 liter scuba canister if the temperature of the canister is 300 K and the pressure is 200 atmospheres?

Calculate the ratio of ammonium chloride to ammonia that is required to make a buffer solution with a pH of 9.00. The Ka for ammonium ion is 5.6 x 10-10.

IF you accidentally fill the the volumetric flask above the graduation mark ,it it okay to simply remove the extra volume with pipet true or false?

1. To make a 0.50 M solution, how many moles of solute will be needed if 12.0 liters of solution are required?

whatever volume u use the solution should be topped up to its final volume using water

true or false

A. Calculate the molality, freezing point, and boiling point for each of the following water solutions of nonionizing solutes: 1. 144 g of C6H12O6 dissolved in 1000 g of H2O 2. 48 g of CH3OH dissolved in 200 g of H2O 3. 184 g of C2H5OH dissolved in 400 g of H2O 4. 600 g of C3H7OH dissolved in 600 g of H2O 5. 100 g of of C2H6O2 dissolved in 200 g of H2O

A 20.0-L volume of methane gas is heated from 25°C to 70°C at constant pressure. What is the final volume of the gas?