What is Titan? Why are scientists interested in it?

HF + NaOH - > H2O + NaF. How many grams of sodium fluoride can be expected if 100mL of Hydrofluoric acid is used?

Which element is found in nature only in compounds?

Which of the following is a clue that a chemical change has taken place? A.) A gas forms when the change takes place. B.) The substance is smaller than it was before the change took place. C.) The substance has been shaken up. D.

List the steps needed to convert the number of atoms to the mass of an element. (Hint: there are 2).

A change of state requires the addition or removal of heat energy.

The chemicals formula of glucose is c6h12o6. what are the names of the elements in glucose and how many atoms of each element are present in glucose molecules

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-