How many electrons are in an Fe2 + ion?

(1) 24 (3) 28

(2) 26 (4) 56

How is a satellite affected by the earths gravity?

What temperature of air can hold the most water

Why does sugar mix more in hot water than in cold water?

Calculate the approximate volume of a 1.50 mol sample gas at 15.0°C and a pressure at 3.75atm.

A cylinder of oxygen gas contains 2.80 mol of 02. If the volume of the cylinder is 8.58 L, what is the pressure of the 02 if the gas temperature is 294 K.

Human muscle stores sugars in the form of

How much heat is needed to raise the temperature of 75 g of a substance by 15 C when the specific heat is 0.92 J/g-C?

A nitric acid solution flows at a constant rate of 5L/min into a large tank that initially held 200L of a 0.5% nitric acid solution. The solution inside the tank is kept well stirred and flows out of the tank at a rate of 10L/min.

How many molecules are in 237g (about a cup of water)

3. A compound was analyzed and found to contain 9.8 g of nitrogen, 0.70 g of hydrogen, and 33.6 g of oxygen. What is the empirical formula of the compound?