If the mass of a material is 91 grams and the volume of the material is 20 cm3, what would the density of the material be?

A molcule is the smallest part of

a 5 gram sample of zinc is added to hydrochloric acid. The amount of hydrochloric acid is sufficient to allow the zinc to react cmpletely. what mass of hydrogen gas does this reaction produce?

Where is the sun shining most directly when we are having summer in the Northern Hemisphere?

What happens to electrons during an oxidation reduction reaction

The molar mass of argon is 40 g/mol. what is the molar mass of a gas if it effuses at 0.91 times the speed of argon gas?

According to the article, HOW has the discovery of the Mimivirus influenced scientists' ideas about viruses? А Since it acts differently than other viruses, scientists think it could lead to a vaccine for cancer B.

Consider the two electron arrangements for neutral atoms A and B. Are atoms A and B the same element? A - 1s2, 2s2, 2p6, 3s1 B - 1s2, 2s2, 2p6, 5s1 yes or no

Match the following terms to their correct examples Conduction Convection Radiation Water warming on a stove The sun warming the earth A spoon resting in a cup of tea gets hot

Why are 3 ammonium groups needed for every 1 nitride ion?

How do you explain the relativity high conductivity of tap water compared to a low or zero conductivity for distilled water