How many joules of heat are required to melt 115 g of ice?

How many electrons are transferred between the cation and anion to form the ionic bond in one formula unit of each compound? (1 electrons, 2 electrons, 3 electrons, 4 electrons) ? NaCICaSBaOKBrLiF

The number 40 in the name calcium-40 represents A. the atomic number B. the number of protons in the atom C. the sum of the protons and neutrons D. none of these

A sample containing only carbon, calcium, and nitrogen is analyzed in a combustion train, producing solely carbon dioxide, calcium oxide, and nitrogen dioxide. The reaction of a 426.74 mg sample of the unknown produces 298.

What is the mass of potassium chloride when 6.75 g of potassium reacts with an excess of chlorine gas? the balanced chemical equation is:?

What type of compound is always an electrolyte?

To what chemical reaction class does this reaction belong? 2 mg (s) + o2 (g) 2 mgo (s)

Which best illustrates how particle arrangement changes when solids change into liquids

Express in scientific notation (6.0x10^4) (3.1x10^-1)

How do you measure the mass of a liquid?

Given the following information, calculate the mass for B-11. B-10 has a natural abundance of 19.9 percent, while B-11 has a natural abundance of 80.1 percent. The mass of B-10 is 10.013 amu.