How many O2 molecules are present in 0.470 g of oxygen

gas? Can you guys tell me how answer this kind of problem ... I appreciate it.

What was the problem with Rutherford's model? a. It described a nucleus. c. It could not explain the chemical properties of elements. b. It did not include electrons d. It described quantums.

Which products are formed when aluminum is added to a silver chloride solution? none only AlCl3 AlCl3 and Ag AlAg3 and Cl2

According to the graph, which of the following substances is least soluble in 100 grams of water at 50°C? 1. KCI 2. Nacl 3. NHACI 4. HCI

3. A wave has y frequency of 100 Hz and a speed of 50 m/s. What is the wavelength?

Match the substance with its chemical formula. 1. H + hydroxide ion 2. H3O + hydronium ion 3. OH - hydrogen ion

1. Why does CH30 evaporate faster than water?

How does concentration affect our daily lives in science?

How many nitrogen atoms are in 2.79 mo. of NH3

What is the chemical formula for polysaccharide?

What is the empirical formula of a compound composed of 32.9g of potassium and 6.73 g of oxygen