What do effective problem-solving strategies have in common?

Which of the following is NOT a symbol for an element? H Li Pb HF

In what state of matter are the particles vibrating at high speeds? A) gas B) liquid C) solid D) plasma

The equation, 2 H2 (g) + O2 (g) arrow 2 H2O (l), represents an equation for a standard formation reaction. True False

Methane (CH4), ammonia (NH3), and oxygen (O2) can react to form hydrogen cyanide (HCN) and water according to this equation: 2CH4 + 2NH3 + 3O2 - > 2HCN + 6H2O How many grams of oxygen are required to produce 1 mole of H2O? a. 48g b. 16g c. 32g d.

For the reaction x2 + y + z → xy + xz, it is found that doubling the concentration of x2 doubles the reaction rate, tripling the concentration of y triples the rate, and doubling the concentration of z has no effect.

What is the mass of 1.70 moles of magnesium chloride, MgCl2?

A 42.0g sample of compound containing only C and H was analyzed. The results showed that the sample contained 36.0g of C and 6.0g of H. Which of the following questions about the compound can be answered using the results of the analysis?

Determine the number of equivalents if a 3.89N solution contains 0.76 L of solution

Phosphorus oxychloride has the chemical formula pocl3, with p as the central atom. in order to minimize formal charge, how many bonds does phosphorus make to the other atoms in the molecule?

Why is sodium sulphate hemihydrate called as "Plaster of Paris"?