During vaporization, a substance changes from a liquid to a (n) blank. (fill in the blank)

Note: Moles to grams, or grams to moles you will need to use molar mass (g/mol). 1) How many moles are in 20.2 g HCl? 2) How many grams are in 2 moles of HCl? Note: When converting from moles to molecules, you need the following: 1 mole = 6.

Write, Balance and Label the type of reaction: Potassium Hydroxide plus phosphoric acid yields potassium phosphate and water.

How can you determine density from the mass-volume relationship?

Two samples of pure water of equal volume are put into separate dishes and kept at room temperature for several days. The water in the first dish is completely vaporized after 2.8 days, while the water in the second dish takes 8.

Photolysis is a part of which cycle? a. phosphorus b. oxygen c. nitrogen d. carbon User: What do the carbon, oxygen, and nitrogen cycles all have in common? a. They all include an exchange of gases with the atmosphere. b.

Model describe how you would show j. j. thomson's model of the atom using small beads and clay

Switching one substance for another is called ... ? a) displacement b) synthesis c) decomposition d) oxidation

C2h4 + O2 - CO2 + H2O If we start with 20 grams of CH4, how many moles of CO2 will form?

How does chemical energy relate to the atom and how can we use it?

A positively charged atom is known as a cation. A cation will? ... A) have more protons B) have to same number of protons and electrons. C) Be the same as a neutral atom. D) have more electrons.