Which of the following elements is the smallest?

A. Strontium (Sr)

B. Calcium (Ca)

C. Beryllium (Be)

D. Magnesium (Mg)

How do we measure trace gas pollutants in the atmosphere?

Nitrogen has a density of 1.17 x 10^-3 g/cm^3. If you have 2,500 cm^3 of nitrogen gas, which of the following is the correct mass of nitrogen, using significant figures? A. 2.92 g B. 2.2 x 10^6g C. 14 x 10^6g D. 2.9 g

In a chemical equation, what do the coefficients indicate?

What is the subtomic partical with the smallest mass

Most reactive metal and nonmetal

4Al (s) + 3O2 (g) - >2Al2O3 (s) the reaction is started by mixing 10.0g of Al and 10.0g of O2. What is the limiting reaction and how much Al2O3 is produced?

F 3.84 moles of methane are consumed in this reaction, how many moles of HCN will be produced?

Two metals with equal mass and different heat capacities are subject to the same amount of heat; which undergoes the smallest change? a) The metal with the higher heat capacity. b) The metal with the lower heat capacity.

What is the first man made organic compound synthesized in laboratory?

Express (3 x 104) (4 x 1023) in scientific notation