A sample of a hydrate has a mass of 5.026 g. After it is heated, it has a mass of 3.492 g. What is the percentage by mass of water in the hydrate?

1. 19.40%

2. 27.92%

3. 30.52%

4. 69.48%

What is the average velocity from 0 seconds to 8 seconds?

What structural features do ethanol and 1-decanol have in common?

7. How many liters of NH3, at STP will react with 10.6 g O2 to form NO2 and water? 4NH3 (g) + 7O2 (g) → 4NO2 (g) + 6H2O (g) * a. 2.12 L b. 3.03 L c. 4.24 L d. 6.49 L 8. What is the maximum number of grams PH3 that can be formed when 3.

What element must combine with the metal for oxidation to take place?

The maximum efficiency possible in an energy conversion process that is not limited by the second law of thermodynamics --100% --1% --95% --30%

What is 450 g of flour a measure of? A) Weight B) Inertia C) Gravity D) Mass

List the four (4) ways you can tell that a chemical reaction has occurred.

A student has 2.99 g of Potassium Permaganate. How many mL of a. 532 M solution can the student make? How does one solve this?

Which statement is true according to the kinetic theory? 1. Moles of different gases with the same mas and temperature always have the same average density. 2.

A substance with a pH of 9 has A) no H30 + ions or OH - ions. B) more H30 + ions than OH - ions. C) more OH - ions than H30 + ions. D) the same number of H30 + ions as it does OH - ions.