An unknown substance has mass of 20 grams and volume of 2 cm3. What is the density of the substance

Nitric acid+sodium=>sodium nitrate+hydrogen

What does it mean when a glass sweats

Normal atmospheric pressure in Mexico City is about 56.5 cm Hg. Convert this to atmospheres.

What law represents a balanced chemical equation

Is H2C2O4 a base or acid

What type of symbolic relationship do a bat and cow have?

Scientis often need to define the system under study during an investigation. Explain why defining the system under study is important

A student synthesized caffeine during an experiment. He had expected 10.0 grams of caffeine, but was only able to collect 4.72 grams. What was the percent yield for this experiment?

A property of metals is high thermal conductivity which is

If you had 10.00 mL of acetic acid that you titrated with. 100 M NaOH, and you used 45.15 mL of that base to get a light pink color, what is the concentration of your acetic acid? A).904M B).452M