If an object is thrown 60 m into the air and it takes the object 6 s to get there, what's the average speed of the object?

What is the difference between radiant energy, sound energy and electric energy?

40.0% C, 6.72% H, 53.29%, O. Molar mass is 60 g/mol. Determine the empirical and molecular formula.

You place 10 grams of a salt into water and want it to dissolve. All of the following will cause a salt to dissolve faster except for which one?

Rank the compounds in each group according to their reactivity toward electrophilic substitution. 1 = most reactive; 3 = least reactive. a. benzaldehyde p-methylbenzaldehyde p-chlorobenzaldehyde b.

A 2.50 L sample of a gas at 1.00 atm is subjected to 1.25 atm of pressure at constant temperature. What is the new volume of the gas?

When K-37 undergoes positron emission, what is the resulting atom? A) K-37 B) K-38 C) Ar-37 D) Ar-38

Consider the following reaction where Kp = 4.55*10-5 at 723 K: N2 (g) + 3H2 (g) ⇋ 2NH3 (g) a) If the three gases are mixed in a rigid container at 723 K so that the partial pressure of each gas is initially one atm, what will happen?

Which terms are used to identify pure substances? (1) an element and a mixture (2) an element and a compound (3) a solution and a mixture (4) a solution and a compound

Which of the following polyatomic ions will form an ionic compound with two sodium ions? CO32- HCO31- NO21- NO31-

What is hybridisation