The attractions that allow molecules of krypton to exist in the solid phase are due to:

1) ionic bonds

2) covalent bonds

3) molecule-ion forces

4) Van der waals forces

If a sample gas is collected over water. The atmospheric pressure is 778 mm and the temperature is 30°C. If the vapor pressure of water at 30 C is 31.8 mm, what is the pressure of the gas?

5H₂ 1. What number represents the coefficient? 2. What number represents the subscript? 3. What element is represented by the letter H? 4. How many total H's are there?

What is the percent by mass of phosphorus?

Altering the pressure of a system can affect the rate of a chemical reaction. true false

Dalam kajian geografi, cara pandang dan cara pikir terhadap objek material dari sudut geografi disebut objek

For the reaction, calculate how many moles of the product form when 0.012 mol of O2 completely reacts. Assume that there is more than enough of the other reactant. 4Al (s) + 3O2 (g) →2Al2O3 (s) Express your answer using two significant figures.

Nuclei with too many or too few neutrons are?

Be sure to answer all parts. Enter the formula for potassium dihydrogen phosphate and determine its molecular (formula) mass.

g Gaseous ethane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water. Suppose 2.71 g of ethane is mixed with 3.8 g of oxygen. Calculate the maximum mass of carbon dioxide that could be produced by the chemical reaction.

How many molecules of atp are produced in aerobic versus anaerobic cellular respiration