The number of moles of oxygen gas needed to react with 4.0 moles of mg is

What kind of gas is the best chance for inflating a balloon that must remain inflated for a long period of time?

if a sample of gas at 25.2°C has a volume of 536 ml at 637 torr, what will its volume be if the pressure is increased to 712 torr?

A 360 - mL can of soda pop contains 47 g of sucrose (C12H22O11). What is the molarity of the solution with respect to sucrose?

In the periodic table, how are elements in the same group related to each other? A. They have the same atomic mass. B. They have very different properties. C. They have the same atomic number. D. They have very similar properties.

Formula of diamond silver chloride?

Carbon exists in nature as three isotopes. Given the atomic masses and relative abundance of the isotopes, what is the average atomic mass of carbon?

What is the correct value for Avogadro's number? A. 6.022 x 10^23 B. 6.023 x 10^22 C. 6.022 x 10^33 D. 6.022 x 10^2.3 E. none of the above

Fossil fuels are considered useful to humans because they are

Which organelles are unique to plant cells? chloroplasts mitochondria vacuoles nuclei

An atom that has 13 protons and 15 neutrons is an isotope of the element? How can I count it?