Is mass conserved in chemical reactions? Make a prediction based on this question. Be sure to tell how you would determine whether or not mass was actually conserved.

How many moles of P are there in 76.0 mol of P4O10?

Which will result in positive buoyancy and cause the object to float? A. when the buoyant force is less than the force of gravity B. when the force of gravity is more then the buoyant force C.

What is the percent composition by mass of ammonium chloride in a saturated solution of ammonium chloride at 45°C

A sample of aluminum metal absorbs 8.32 J of heat, upon which the temperature of the sample increases from 23.2 degrees C to 30.5 degrees C. Since the specific heat capacity of aluminum is 0.90 J/g-K, the mass of the sample is what in grams?

A 2.950*10-2 M solution of glycerol (C3H8O3) in water is at 20.0∘C. The sample was created by dissolving a sample of C3H8O3 in water and then bringing the volume up to 1.000 L. It was determined that the volume of water needed to do this was 998.

A flask contains 4.4g of carbon dioxide gas. calculate how many moles CO2 gas does it contains?

What defines a mixture? A) A mixture contains different substances that are chemically combined. B) A mixture contains different substances that are not chemically combined and can be broken down into its basic substances through physical means.

How much does 5 gallons of water weigh?

Calculate the percent by mass sulfur in sulfuric acid, h2so4.

4. What electrons are involved in chemical bonding?