Other Chemistry Answers

in order to dissolve the greatest amount of sugar in a cup of water, you should

(a) How many ppm of Ca(NO3)2 are in 0.144mMCa(NO3)2?

Initially, there is a gas at a pressure of 12.0 atm, a volume of 23.0 liters, and a

temperature of 200. K. Then the pressure is raised to 16.0 atm and the temperature is

increased to 250. K. What is the new volume of the gas?

The half-life of strontium-91, 91

38Sr is 9.70 h. Find

(a) its decay constant, and (5pts)

(b) for an initial 1.00-g sample, the activity after 15 hours.

5.00 g of sodium hydroxide is dissolved in 150 mL of water. Using a coffee-cup calorimeter, the temperature change of the water is measured to be 2.2 degrees celsius. The specific heat capacity of water is 4.184 J/g°C. Calculate the heat released per gram of sodium hydroxide dissolved.

for CH4(g) + 3Cl2(g) ——> CHCl3(g) + 3HCl(g) how many grams of CH4 is needed to produce 45.5 g CHCl3

the reaction of finely divided aluminum and iron(III) oxide, Fe2O3, is called the thermite reaction. it produces a tremendous amount of heat, making the welding od railroad track possible. the reaction of 500.0 grams of aluminum and 500.0 grams of iron(iii) oxide produces 166.5 grams iron. calculate the mass of iron that should be released by this reaction.

1. We are given the initial pressure of 1.5 atm and temperature of 25⁰C of the gas and asked for the pressure at a higher temperature of 450⁰C