What has more mass a golf ball or tennis ball?

Given the chemical equation where glucose combines with oxygen gas, C6H12O6 + 6O2 - -> 6H2O + 6CO2, how many moles of oxygen gas will it take to use up six moles of glucose (C6H12O6) ?

In what two places minerals are form?

Does the hydrogen molecule obey the octet rule?

a balloon has a volume of 1.25 L at 1.5 atm of pressure. What is the volume on the baloon and 0.25 atm of pressure?

The half-life of tritium, or hydrogen-3, is 12.32 years. After about 37 years, how much of a sample of tritium will remain unchanged? A. 1/3 B. 1/8 C. 1/16 D. 1/2

What element is used as a shield to protect people from radioactive substances?

The frequency of a given region of the electromagnetic spectrum is more than 3 x 1019 HZ. Note that the speed of light is 2.998 x 108 m/s. Which waves are found in this region? A. gamma rays B. visible light C. microwaves D. radio waves E. x-rays

A farmer uses water to irrigate his potato crops. Which roles of water does this examplify

How was helium first discovered?

When is alpha particle emission most likely to occur? A. When the nucleus has more than 83 protons. B. When the ratio of neutrons to protons in the nucleus is too high to be stable. C. When the nucleus has a mass of more than 83 amu. D.