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Write the balanced equation, then outline the steps necessary to determine the information requested in each of the following
a) the number of moles and the mass of Mg required to react with 5.00 g of HCl and produce MgCl2 and H2
b) the number of moles and the mass of oxygen formed by the decomposition of 1.252 g of silver(I) oxide.
c) the number of moles and the mass of magnesium carbonate, MgCO3, required to produce 283g of carbon dioxide. (MgO is the other product)
d) the number of moles and the mass of water formed by the combustion of 20.0 kg of acetylene, C2H2, in an excess of oxygen
e) the number of moles and the mass of barium peroxide, BaO2, needed to produce 2.500 kg of barium oxide, BaO (O2 is the other product)
question a 24.0 kg gold bar at 27.0degc is placed in a large insulated 0.800 kg glass container at 15.0degc with 2.00
The lid is tightly sealed on a rigid flask containing 3.50 L H2 at 17 °C and 0.913 atm. If the flask is heated to 71 °C, what is the pressure in the flask?
Volume of solution is 350 cubic centimeters. It contains 0,12 moles of sodium bicarbonate and 0.08 moles of sodium carbonate. How to calculate pH of such solution?
Equal molar quantities of two gases, O2 and H2O, are confined in a closed vessel at constant temperature, Which gas, if any, has the greater partial pressure
The chemical formula for octane is C8H18. Explain how many moles are present in a12.4g sample of octane
a student heats 5.128 g sodium bicarbonate to completely decompose the sample to sodium carbonate. 3.2349 g of sodium
Gallium crystallizes in a primitive cubic unit cell. The length of an edge of this cube is 362 pm . What is the radius of a gallium atom
What are the fewest numbers of turns of the citric acid cycle needed before the carbon radioactive in both carbons of the acetyl group in acetyl CoA are incorporated into all 4 carbons in every molecule of oxaloacetate produced?
Nitroglycerin is a shock sensitive liquid that denotes by the reaction 4C3H5(NO3)3(1) 6N2(g)+10H2O(g)+12CO2(g)+O2(g). Calculate the total volume of the product gases at 215 kPa and 273 degrees C from the detonation of 1.00lb (454g) of notroglyceri..
Consider the reaction of 25.0 mL of 0.20 M AgNO 3(aq) with 25.0 mL of 0.20 M NaBr(aq) to form AgBr(s) at 25 °C. What is ?G for this reaction? The K sp of AgBr is 5.0 x 10 -13 at 25 °C.
a 1.0 ounce piece of chocolate contains 15 of caffeine and a 6.0 ounce cup of regular coffee contains 105 of caffeine.
Determine the pH of the solution containing 8*10^(-3) M each of HF and NaF. Assume that NaF dissociates completely. Acid Dissociation constant for HF is Ka=6.3*10^(-4).
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