What percentage of boys Chose walking

Which phrase best describes humidity?

Name 3 characteristics that can be used to identify minerals

How many sulfur atoms are in H2SO4?

When the compound, Ca (NO3) 2, is mixed with water, the Ca (NO3) 2 is: soluble because all Ca+2 compounds are soluble in water insoluble because most Ca+2 compounds are insoluble in water soluble because all NO3-1 compounds are soluble in water

Calcium hydride (cah2) reacts with water to form hydrogen gas: cah2 (s) + 2h2o (l) → ca (oh) 2 (aq) + 2h2 (g) how many grams of cah2 are needed to generate 58.0 l of h2 gas at a pressure of 0.811 atm and a temperature of 32°c?

During an endothermic phase change, what happens to the potential energy and the kinetic energy? Potential energy stays the same, and kinetic energy increases. Potential energy increases, and kinetic energy increases.

In the following atomic model, where does the strong nuclear force happen? А B с -0 outside A between A and B between B and C O inside C

Which groups of elements on the periodic table form metal ions that do not require roman numerals in their names?

Write the Chemical formula for the conjugate base of the following Bronsted-Lowry acids. A) H2SO4 B) HPO4^2-

The heat from the bonfire is transferred to the student's hands through the process of