Which best represents the law of conservation of mass?

What mass of water can be obtained from 4.0 g of H2 and 16 g of O2?2 H2 + O2 - --> 2 H2O9 g18 g54 g36 g

If we're interested in knowing the rate at which light energy is received by a unit of area on a particular surface we're really trying to figure out the

A 4 gram metal object displaces 2 mL of water in a graduated cylinder. What is the density of the metal object?

Whenever chemical bonds are broken, energy is. whenever chemical bonds form, energy is?

Calculate the mole fraction of the total ions in an aqueous solution prepared by dissolving 0.400 moles of MgBr2 in 850.0 g of water

What is the general term for a compound not containing the element carbon?

determine the specific heat of a material if a 35g sample absorbed 96 J as it was heated from 293 K to 313 K?

A compound that changes color when it comes into contact with an acid or base is an?

1. A food sample is burned in a calorimeter that contains 2000. g of water. The temperature increases from 22.0°C to 44.3 °C. How many Calories does the food sample contain, assuming all of the energy from the food was transferred into the water?

Why doesn't water light on fire? It has all the ingredients except heat! Hydrogen for the flammability factor, oxygen so it can keep burning, and all you need to do is add heat and BOOM you have a flame! 15 pts