How do I calculate the molecular formula for a compound with an empirical formula CH2O and a molar mass of 90 g/mol?

1. Describe potential long-term and short-term effects of exposure to chemicals.

Suppose you are given a sample of a homogeneous liquid what would you do to determine whether it is a solution or a pure substance

When a 120g sample of aluminum absorbs 9612 J of energy its temperature increases from 298K to 388K. Find the specific heat of the aluminum.

What is the mass of 5.80 * 1023 atoms of silver (Ag) ?

Which best defines partial pressure in a mixture of gases? O pressure that is exerted by all the gases of a mixture on the container O pressure that is exerted by one gas as if it occupied a container by itself O half of the pressure that is exerted

How many moles are there in 545g of Fe2O3?

How are magic minerals different from Felsic minerals? A. Mafic minerals contains lower levels of iron and magnesium. B. Mafic minerals contain more dark-colored, high-density minerals C.

Which of the following gases in Earth's atmosphere would you expect to find as molecules and which as individual atoms? a. Nitrogen b. Oxygen c. Argon

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

What is done with the reactive sodium after the reaction to make sure the products are safe in an air bag?