What is most likely true of an atom with a mass of 15 amu? there are 15 protons. there are 15 electrons. the total number of protons and electrons is 15. the total number of protons and neutrons is 15?

The mass of single iridium atom is 3.19*10^-22 grams how many iridium atoms would be in 56.4 milligrams of iridium

Which of the following are likely to form an ionic bond? 1) two carbon atoms 2) carbon and hydrogen atoms 3) sodium and fluorine atoms 4) two silver atoms

Why does tempature decrease with higher alitude

How would you classify the fossil fuel, petroleum, in terms of a resource? Justify your answer in two or more complete sentences.

What is the name of a very strong base

Enter your answer in the provided box. A sample of an unknown gas effuses in 14.5 min. An equal volume of H2 in the same apparatus under the same conditions effuses in 2.42 min. What is the molar mass of the unknown gas

What volume will 0.710 moles of nitrogen gas occupy at STP?

4) Acompound has an empirical formula of Na2co3, and a molar mass of 3.18g/mol. Find its molecular formula.

How many molecules of glucose, C6H12O6, can be "burned" biologically when 283.2 grams of oxygen is a available?

Why does acids that has been accidentally spilled on a book cause the colour of the book cover and the ink to change?