Name three ways chemists keep track of amounts of substances

What element speed of sound is 323 m/s?

How does pollution affect marine life? a. pollution causes a decrease in phytoplankton populations and therefore a decrease in the occurrence of algal blooms. b.

What is the difference between gram positive and gram negative?

2.0L of hydrogen gas is mixed with 3.0L of nitrogen gas at STP in a rigid 5.0L vessel. A reaction occurs, producing ammonia gas NH3 and causing the pressure to change.

Does acetylene, C2H2 have a linear shape and the bond angle of 180º?

Why do magnesium and oxygen combine?

When a chemical reaction takes place, the number of atoms of each element in the reactants

A scientist is measuring the pressure that is exerted by each of the following gases in the atmosphere: carbon dioxide, oxygen, and nitrogen. Which term most likely describes what she is measuring?

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.

In the formula for the compound xcl4 the x could represent