Which of the following is a combustion reaction?

2AgNO3 + H2S → Ag2S + 2NHO3

2H2O → 2H2 + O2

4Fe + 3O2 → 2Fe2O3

2Al + N2 → 2AIN

An aluminum pipe must not stretch more than 0.05 in. when it is subjected to a tensile load. Knowing that E 5 10.

Which of the following is not an atom found in household bleach (NaOCI) ? A) sodium (Na) B) chlorine (CI) C) hydrogen (H) D) oxygen (O)

Which change in the state of matter is thermal energy released

A mothball, composed of naphthalene (c10h8), has a mass of 1.64 g. part a how many naphthalene molecules does it contain?

When 12.71 g of copper react with 8.000 g of sulfur, 14.72 g of copper (I) sulphide is produced. What is the percentage yield in this reaction? 2Cu (s) + S (g) → Cu2S (s) Show your work.

Element X has an electron configuration that ends with 5p6. Which of the following describes this atom correctly? a. unstable metal b. noble gas c. alkali metal d. unstable nonmetal

When comparing the two elements Br and Ga, the larger element is GaG a When comparing the two elements Br and Ga, the larger element is blank based on periodic trends alone. True or false?

An initial 25.00 mL solution of nitric acid (HNO3) was diluted to 250.00 mL, and15.00 mL of this diluted solution was titrated with a 0.2244 M solution of sodium hydroxide. If 21.

Which statement can best be concluded from the ideal gas law? The product of pressure and volume of an ideal gas is proportional to the absolute temperature.

Which diatomic molecule is formed when the 2 atoms share 6 electrons?