on the periodic table, elements are arranged by which of the following. A. mass numbers. B. increasing atomic number. C. alphabetical order. or D. density

What volume of gold would be equal in mass to a piece of copper with a volume of 141 ml? the density of gold is 19.3 g/ml; the density of copper is 8.96 g/ml?

A solution of HCN (aq) is made. When the solution comes to equilibrium, which of the following is true? HCN (aq) = H + (aq) + CN - (aq) with Kc = 7.9 X 10-10 A. The reaction mixture will contain mostly HCN. B.

What is the symbol for iron

What volume of 18.0 M H2SO4 is needed to contain 2.45 moles of H2SO4?

Based on Reference Table I, which change occurs when pellets of solid NaOH are added to water and stirred? (1) The water temperature increases as chemical energy is converted to heat energy.

During a class demonstration the potassium exploded. Suggest what might have caused this to happen

How would a soil that develop in a warm, wet place be different than one that develop in hot, dry place

How do halogens differ from noble gases?

The equilibrium constant at 35 0 K for the reaction Br2 (g) I2 (g) 2IBr (g) has a value of 322. Bromine at an initial pressure of 0. 0500 atm is mixed with iodine at an initial partial pressure of 0.

The number of electrons can accommodate in K shell is 8. True or False