Which out of Ca and Zn atoms has higher ionization energy and why?

Mole fraction of the solute in a 1.00. What is the molal aqueous eqaution?

Sulfur dioxide So2 is present in our atmosphere and is used as a preservative in foods. Is it possible to use the common charges that sulfur and oxygen make to determine the forumla

When bonding atoms seek to achieve a stable

What is 144. X 144 = What

Which of the following correctly describes the decomposition of aqueous NaNO3? Given: NaNO3 (aq) : ΔHf ° = - 447.48 kJ

Carbonic acid (H2CO3) does not dissortate 100 percent in water. What type of substance is it? weak acid Strong base strong acid weak base

The standard enthapy of combustion of solid urea co (nh2) 2 is - 632kjmol-1 at 298k

What happens to an isotopes during radioactive

Why does the effective nuclear charge increase across a row of the periodic table?

Iodine-131 decays to form xenon-131. the half-life of this reaction is 8.07 days. from a 200-g sample of iodine-131, how much of the sample is xenon-131 after 16.14 days?