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After the reaction of the slag (solid residue) was analyzed. It contained 3.8 % Carbon, 5.8 % Phosprorus, and 26.6 % Calcium by mass.
If a 25gm sample of calcium carbonate is added to a 75.5 ml HCl (density = 1.125gm/cm3, 26% HCl by mass), calculate the molarity of the HCL
A cylindrical bar of gold that is 1.5 in. high and 0.25 in. in diameter has a mass of 23.1987g, as determined on an analytical balance.
Calculate the sodium ion concentration when 60.0 mL of 6.0 M sodium carbonate is added to 30.0 mL of 1.0 M sodium bicarbonate.
If the sun which is 93,000,000 miles away away from Earth was to go out, how long would it take for us to know that this had happened?
What is the molarity of a solution formed from 20.0 grams of NaCl dissolved in 650.0 mL of H2O?
Gasohol is a fuel additive containing ethanol (C2H6O) that combusts with oxygen (O2) to produce carbon dioxide (CO2) and water (H2O).
Calculate molality, the mole fraction of water, and the percent by mass of sodium chloride.
What is the limiting reagent, how many moles of excess reagent will there be, and how many grams of each product will form?
If 350.0 mL of 6.00 M H2SO4 reacts with 45.00 grams of Al in the following reaction, what is the limiting reagent.
How many grams of C*6H*14O*6 should be formed from the reaction of C*6H*14O*6 should be formed from the reaction of C*6H*12O*6 .
Industrially, nitric acid (HNO3) is produced by the Oswald process represented by the following - what mass of NH3 is needed to produce 5 tones of HNO3?
Air bags are activated when a severe impact causes a steel ball to compress a spring & electrically ignite a detonator cap.
Calculate the volume, in cm3 that the sample would have @ STP, assuming that it remains gaseous.
How many moles of water are made from the reaction of 2.2 moles of oxygen gas with unlimited quantities of hydrogen gas?
An aqueous solution of 10.00 g of an enzyme has a volume of 1.00 L at 29°C. The solution's osmotic pressure at 29°C is found to be 0.781 torr.
At 25 degrees C, 0.212 g of barium hydroxide Ba(OH)2 (2 in lower position) is dissolved completely in sufficent water to make 0.25 litre final solution.
First, how many moles are present in each of the following masses? 2.58g of SrSO4 and 2.53 x10-3g of Ag2CO3.
If your 9.2 ft x 13.8 ft x 8.6 ft dorm room just meets the new EPA standard, how many of these particles are in your room?
Lines in the Brackett series of the hydrogen spectrum are cause by emission of energry accompanying the fall of an electron from outer shells.
A solution of sodium cyanide (NaCN)is prepared by dissolving 50 grams into 500ml of solution. What is the Molarity,%(w/v), and ppm of the resulting solution.
A material will float on the surface of a liquid if the material has a density of less than that of the liquid. Given density of water as 1.0g/mL.
Determination of density has many practical applications. Is a piece of jewelry pure gold or is it an alloy perhaps of gold and silver?
Elemental sulfur occurs as octatomic molecules, S8. What mass of fluorine gas is needed for complete reaction with 218.48 g sulfur to form sulfur hexaflouride?
Determine the percentage by mass of indium according to each formula, and explain how the error could be made.