Which of these elements had two valence electrons? hydrogen barium nitrogen Krypton bromine

Which statement is correct? A. A pot of boiling soup has greater thermal energy than a hot tub. B. A hot tub has greater thermal energy than a pot of boiling soup. C. A pot of boiling soup and a hot tub have the same amount of thermal energy. D.

If a penny is made of 3.11 grams of copper, how many atoms of copper are in the penny

Polycarbonate plastic has density of 1.2g/cm cube

A compound is found to contain 73.23% xenon name 26.77% oxygen by mass. What is the empirical formula for this compound?

If 200.4g of water is mixed with 101.42g of salt the mass of the final solution would be reported as

What is the name of a binary compound made up of lithium and chlorine?

A scientist in London and a scientist in California both conducted independent investigations that produced similar results.

When magnesium combines with oxygen, the reaction involves a. a conversion of protons into electrons. b. sharing of electrons between Mg and O. c. transfer of electrons from Mg to O. d. transfer of electrons from O to Mg.

The activation energy for the reaction no2 (g) + co (g) ⟶no (g) + co2 (g) is ea = 100 kj/mol and the change in enthalpy for the reaction is δh = - 375 kj/mol.

What process transform solar energy into chemical energy?