Out of water, sand, and salt, which material is soluble? Which is insoluble material? Which is solvent?

Could a nucleus that has more than one proton but no neutrons exist? Explain.

Which chemical reaction shows photosynthesis? water + carbon dioxide + sunlight → oxygen + glucose carbon + oxygen → carbon dioxide hydrogen + oxygen → water nitrogen + hydrogen → ammonia

Consider sodium oxide, Na2O. Choose the best explanation for the subscript, 2, from the list provided. There are two atoms of oxygen and one atom of sodium. There are two atoms of sodium and one atom of oxygen.

What is the type of intermolecular force between MgNO3 and H2O

In order for a process to be spontaneous, Multiple Choice the entropy of the surroundings must increase. the entropy of the surroundings must decrease. the entropy of the system must increase.

A 0.45-g sample of aspirin is decomposed into its constituent elements and found to contain 0.27 g C, 0.020 g H, and 0.16 g O. Calculate the mass percent composition of C, H, and O in aspirin.

What volume of 6.00 m naoh would be required to increase the ph to 4.93?

Explain how the effects of nuclear charge and the increasing number of core electrons in an atom oppose each other.

What is the mole ratio of oxygen to pentane?

What does the nucleus of a cell do