How many atoms are in lead bicarbonate

A scientist observes that an unknown solution turns blue Litmus paper red and reacts with zinc to produce hydrogen gas. Which of the following best describes the unknown solution. A. a colloid B. an acid C. a base D. a suspension

What is an example of a colloid? A. Soda B. Fog C. Jewelry D. Silverware

What word is used synonymously with the word "base"

Which is an example of a catalyst? heat stirring decrease in temperature

During the combustion of NH3, there is an increase in the amount of oxygen present, from 5 to 20 moles while the amount of NH3 remains unchanged. Given this change in oxygen, what can we say about this chemical reaction?

How many atoms are in 1.25 moles of calcium acetate, ca (c² h³ o²) ²?

What is a physical change? A change in matter from one form to another without becoming a new substance. A change in matter that results in a chemical reaction. A change in matter that results in the smallest unit of a compound.

You are in the room with several objects, the temperature in the room is 21 celcius, what can you assume about the temperatures of the objects in the room?

If a sample contains 74.0% of the R enantiomer and 26.0% of the S enantiomer, what is the enantiomeric excess of the mixture?

In a solution, the solvent particles are attracted to the solute particles by: a) ion/dipole forces b) dipole/dipole forces c) van der Waals forces d) any or all of these forces