At STP, which element is solid, brittle, and a poor conductor of electricity?

(1) Al (3) Ne

(2) K (4) S

How much is 100 g on mg

How do you do empirical formula

Who discovered that a dense positively charged atomic nucleus is at the core of every atom? Ernest Rutherford Erwin Schrödinger Antoine Lavoisier John Dalton

Which term best describes this sugar? A. disaccharide B. monosaccharide C. polysaccharide D. saccharide

A balloon is filled with helium at sea level. What happens to the volume of the balloon in each instance? Explain each answer. a. the balloon floats to a higher altitude. b. the balloon is placed in a bath of liquid nitrogen at - 196C. c.

What can form as a result of a chemical reaction?

A solution of orange juice that weighs 500 g contains liquid juice and solid pulp. All of the pulp is removed from the juice. The pulp is found to weigh 50 g. How much would the remaining liquid juice weigh? A. 50 g B. 250 g C. 450 g D. 500 g

Assume 3 molecules of Fe react according to the following equation. 3Fe + 4H2O Fe3O4 + 4H2 How many molecules of H2 are produced? How many water molecules are required? What is the mole ratio of Fe to H2O?

10.0 mL of a HF solution was titrated with a 0.120 N solution of KOH; 29.6 mL of KOH were required to completely neutralize the HF. Calculate the normality of the HF solution.

The number of grams present in 1.35 mol of Fe is