A rock occupies a volume of 20.0 cm3 and has a mass of 54 grams. What is its density?

Select the correct answer. which statement is true about a polarized object? o a. it gains electrons and becomes negatively charged. ob. it gains protons and becomes positively charged. oc. the number of positive and negative charges can be the same. od. it has to be a metal. o e. there is no change in the distribution of the charge in the object. reset next what

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

What type of reaction is shown below? check all that apply. 2h2o2 → 2h2o + o2 synthesis decomposition combustion