Molarity Practice Problems Note: Below are a few problems for you to practice with. Take time to write out the setups rather than just punching numbers into your calculator.

1. Seawater contains roughly 28.0 g of NaCl per liter. What is the molarity of sodium

chloride in seawater?

2. What is the molarity of 245.0 g of H 2 SO 4 dissolved in 250 mL of solution?

3. What is the molarity of 5.30 g of Na 2 CO 3 dissolved in 400.0 mL solution?

4. What is the molarity of 5.00 g of NaOH in 750.0 mL of solution?

5. How many moles of Na 2 CO 3 are there in 10.0 L of 2.0 M solution?

6. How many moles of Na2CO3 are in 10.0 mL of a 2.0 M solution?

7. How many moles of NaCl are contained in 100.0 mL of a 0.20 M solution?

8. What mass (in grams) of NaCl would be contained in problem 7?

9. What mass (in grams) of H2SO4 would be needed to make 750.0 mL of 2.00 M

solution?

10. What volume (in mL) of 18.0 M H2SO4 is needed to contain 2.45 g H2SO4?

Achemical reaction (also known as a chemical change) produces substances that are chemically different from the starting materials. an example of a chemical reaction is the formation of water from hydrogen and oxygen gas.in a physical change, a substance changes its physical appearance but not its chemical identity. an example of physical change is the formation of liquid water from solid water, a familiar process called melting. physically, liquid water looks very different from solid water (ice) but the chemical identity, water, is the same for both. which of following changes that affect the composition of our atmosphere involve physical changes and which involve chemical reactions? oxygen gas changes to ozone during thunderstorms carbon dioxide is produced by the combustion of gasoline in an automobile engine. when coal, oil, and natural gas are decomposed in landsills they produce methane gas. freezing rain develops when a warm air mass overrides a cold air mass. fog forms from water vapor when the temperature drops below the dew point

What is a metal replacement reaction

Displacement is the slope of a velocity vs. time graph a. true b. false