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Marble (calcium carbonate) reacts with hydrochloric acid solution to form calcium chloride solution, water, and carbon dioxide. What is the percent yield of carbon dioxide if 2.90 g of the gas is collected when 10.5 g of marble reacts?
a metal weighing 50.0g absorbs 220.0 J of heat when its temperature increases by 120.0 degrees celsius. what is the specific heat of this metal?
How much heat (in kJ) is needed when 58.9 g of water warms and boils from 47.91 degrees C to 100 degrees C
Barium metal crystallizes in a body centered cubic lattice. the unit cell edge length is 502 pm and the density of the metal is 3.50g/cm3. using the information, calculate the avogadros number. assume 68% of the unit cell is occupied.
500 ml solution of benzoic acid (ka=6.6e-5) has a ph of 2.88. What is the molarity of benzoic acid
Calculate the number of moles of H+ and OH- initially present the number of moles of h2O produced in the response regulation reaction.
Some enzymes require a nonprotein prosthetic group in order to function. The nonprotein part of these enzymes are called
Chemistry of Proteins and Hemoglobin - What is the effect of the following changes on the O 2 affinity of hemoglobin?
Write the reactions for the preparation of the diaonuim salt for the coupling of the salt with the sodium salt of 2-napthol. 2. Write the reaction of the sodium salt of para red when treated with 1 M H2SO4. Why does a precipitate form?
How long would it take for 1.50 mol of water at 100. 0C to be converted completely into steam if heat were added at a constant rate of 16.0J/s ?
container and found that no change had occurred after one week. Offer possible explanations for the lack of reaction. Assume that A, B, and C are totally miscible liquids.
A car is filled with 15.0 gal of gas and is driven 210 miles. How much gas is left if the car averages 24.1 mi/gal?
supposed the theoritical yield in a reaction is 68.8g, and the percent yield is 66.0%. What is the actual yield of product obtained?
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