Other Chemistry Answers

A sample of chlorine gas has a volume of 6 liters at a temperature of 10 °C. What volume does the gas occupy at 50 °C?

At constant pressure, a sample of gas occupies 420 mL at 210 K. What volume does the gas occupy at STP?

When a 275 mL sample of nitrogen is kept at constant temperature, it has a pressure of 2.0 atmospheres. What pressure does it exert when compressed to 125 mL?

At a pressure of 20 kPa, a sample of a gas has a volume of 50 liters. What pressure does it exert when the gas is compressed to 20 liters?

A sample of Helium has a volume of 2 Liters when the pressure is 250 torr, What volume does the gas occupy at 100 torr?

A sample of 0.892 g of potassium chloride (KCl) is dissolved in 54.6 g of water. What is the percent by mass of KCl in this solution?
Calculate the percent by volume of 20 mL of alcohol diluted in water to produce 250mL solution.

A silver nitrate solution contains 14.77 g of primary-standard AgNO3 in 1.00 L. What volume of this solution will be needed to react with 0.1957g of NaCl.

A vitamin syrup for infants contains 27.44 mg of zinc sulfate monohydrate (ZnSO4.H2O) and 100.00 mg of ascorbic acid (C6H8O6) for every 5 ml.

If there are 10.00 moles of ascorbic acid, what is the mass (in grams) of ascorbic acid?

Note: Round off your answer to two decimal places.

On a certain time of day, the concentration of carbon monoxide,CO in the air over metro Manila reached 1.8x10^-5 g/l. Convert this concentration to mg/m^3

When left over a flame a marshmallow is consumed in a combustion reaction. Assuming a marshmallow is made of entirely sucrose, C12H22O11, and after combustion no residual solid remained, the following chemical equation describes this reaction.

C12H22O11(s) + 12 O2(g) → 12 CO2(g) + 11 H2O(g)

Using the chemical equation in Question 1 above, if a second marshmallow was measured and contained 6.94 g of sucrose and is the limiting reactant, what is the theoretical yield, in g, of CO2?