a toy plane weighs 500g. when placed in water, it changes the water level from 250ml to 300ml. what is the density?

How do scientist know that atoms and molecules combine in well-ordered arrays?

Which two carbohydrates provide half of all the energy for our muscle and other body tissue

25 In general, for a gas at a constant pressure, A the temperature of the gas is inversely proportional to its volume B. the temperature of the gas is inversely proportional to its pressure C.

What is the variable for at what temperature will I observe the highest ice cream sales?

The measure of how much force is acting on a given area is known as?

Under the Implied Consent law, which of the following is true? A. Your driving privileges will be suspended if you refuse a chemical test to measure your alcohol level. B.

If 0.366 g of hydrogen is obtained in this experiment, how many grams of sulfur must be obtained

A substance that does not conduct electricity as a solid but does conduct electricity when melted is most likely classified as (1) an ionic compound (2) a molecular compound (3) a metal (4) a nonmetal

A conical, flat-bottomed flask with a narrow neck that can be used for heating, mixing, watching reactions, and swirling, not for measuring

Answer 1. the law of conservation of mass states that mass is neither created nor destroyed in an ordinary chemical reaction. when an iron nail rusts, it seems to get heavier in mass. does the iron nail follow the law of conservation of mass?