Look at the following chemical

formula. How many total

elements and total atoms are

present in the formula?

2NaHCO3

How would the galaxy be different if gravity did not exist

How would you expect energy to change during a chemical reaction? A. Energy will be increased. B. Energy will be decreased. C. Energy will be converted into another form. D. Energy will be consumed.

A scientist conducts a chemical reaction. At the beginning of the reaction, she combines 5.4 grams of the first reactant and 6.3 grams of the second reactant. She runs the reaction in a closed chamber and heats only the reaction.

Dichotomous Keys are used to identify organisms based on their observed characteristics. Dichotomous means ... A. A list of organism names B. A confusing list of questions C. To classify D. Divided into two parts

When two substances go through a chemical change what happens A, They always turn into gases B, Their physical properties remain the same C, their molecules remain the same D, They form a new substance with different properties

What does the dashes line represent? A. Medium B. Boundary C. Normal D. Incident Ray

Only a small amount of cerium oxide nanoparticles is needed because the nanoparticles ... 1) are elements 2) are very reactive 3) have a high surface area to volume ration

Describe the solubility of water compared to ethanol?

When the free-energy change (AG) of a reaction is negative, the reaction is said to be: Endergonic Non spontaneous Spontaneous Endothermic

The solubility of carbon dioxide gas in water can be increased by