The heat of combustion of butane, c4h10, is 2874 kj/mol. what is the heat of combustion of butane, in kj per gram? (provide the right sig. fig)

Which answer below correctly identifies the type of change and the explanation for the change in calcium carbonate?

The Bohr nuclear model suggests that: Electrons have a positive charge. Most of the atom is made of empty space. The nucleus is made of neutrons and electrons. The mass of an atom equals the number of protons.

If I added 50 grams of salt to water and evaporated the solution with a hot plate, what amount of salt would be left behind?

Atoms of isotopes can be distinguished from atoms of different elements because isotopes always have the same number of:

Carbon has different isotopes. What is different between an atom of 12C and an atom of 13C? A. number of protons in the nucleus B. number of neutrons in the nucleus C. number of electrons in the atom D. number of protons and electrons in the atom

What type of wave it do the contractions of the snakes muscles make as a snake moves forward

Explain the difference between a ph of 8 and a ph of 12 in terms of h concentration

Why do we not have solar and lunar eclipses every month?

How many grams are in 8.9 moles of CaCO3

Why is all matter affected by gravity-