Characteristics of good drinking water

Which of the following is the correct (unbalanced) equation for the reaction that takes place when solid phosphorus combines with oxygen gas to form diphosphorus pentoxide? A. P (s) + O2 (g) - -> P2O5 (s) B. P2O5 (s) - -> P2 (s) + O2 (g) C.

A sample in the lab is found to contain 0.450 g magnesium and 2.95 g bromine. what is the empirical formula of the sample?

Explain why samples of platinum and copper can have the same extensive properties but not the same intensive properties

Which gasses each make up less than 1 percent of earths atmosphere (Check all that apply) Argón Oxygen Nitrogen Water vapor Carbon dioxide

How is burning a marshmallow a chemical change

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda