Why is a bowling ball harder to lift than a basket ball? Is it bc a bowling ball is made of metal?

Which device was the first to be designed for use with rechargeable batteries

How is the limiting reactant determined in the experiment?

To be useful a chemical equation must be balanced what does this mean

A 1.0857 gram pure sample of a compound containing only carbon, hydrogen, and oxygen was burned in excess oxygen gas. 2.190 g of carbon dioxide and 0.930g of water were produced. Find the empirical formula of the compound.

What is about 40 km thick on average

How many ml is in a teaspoon?

In 1987 the first substance to act as a superconductor at a temperature above that of liquid nitrogen (77 k) was discovered. the approximate formula of this substance is yba2cu3o7. calculate the percent composition by mass of this material.

Can light pass through water?

What is the number of electrons in an atom that has 20 protons and 17 neutrons

4NH3 (g) + 502 (g) - >6H20g) + 4NOg) What is the enthalpy change for this reaction?