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A 35g sample of an unknown metal at 81.0 C was placed in 50 grams of water at 23.0 C The final temperature of the water and metal was 25.0 C. Assuming no heat is lost to the surroundings,calculate the specific heat of the metal and estimate its atomic weight
A lead bullet is fired at a wooden plank. At what speed must bullet travel to melt on impact, if its initial temperature is 25oC and the heating of the plank is neglected.
If 12.5 g of iron(III) oxide (rust) are pro- duced from 8.74 g of iron, how much oxygen gas is needed for this reaction?
Calculate the molar solubility of AgCl in a 1.00L solution containing 10.0g of dissolved CaCl2. Compare the molar solubility of Mg(OH)2 in water and in a solution buffered at a pH of 9.0
If C 6 H 12 O 6 yields C 2 H 5 OH+CO 2 then balance this equation and determine what the percent yield for the reaction is if 575.0 grams of C 6 H 12 O 6 glucose yields 126.4mL of C 2 H 5 OH ethanol?
A 21.15 g piece of iron and a 25.05 g piece of gold at 100.0 degreesC were dropped into a 720.0 mL of water at 18.45 degreesC.
determine how many grams of CaH 2 are required to generate 145 Litres of hydrogen gas if the pressure of hydrogen is 825 mm Hg at temperature of twenty one degree Celsius? .
What is the pH when 100 mL of 0.1 M NH3 is titrated with 50 mL of 0.2 M HCl? pKa of NH4Br is 9.25.
If 22 mL of 5.8 M H_2SO_4 was spilled, what is the minimum mass of NaHCO_3 that must be added to the spill to neutralize the acid.
A sample mixture of CH4 and C2H6 weighing 0.732 g burned to give 2.064 g CO2. What is the mass of CH4 in the mixture.
A dog sits 1.07 m from the center of a merry go-round with an angular speed of 1.44 rad/s. If the magnitude of the force that maintains the dog's circular motion is 41.2 N.
occurring at 800 K and 1atm. The initial mixture contains 1 mol of SO2 and 0.5 mol of O2. The reaction mixture can be considered to be an ideal gas.
What is the percentage chlorine by mass in the organic compound?" and got an answer of 37.1% Cl, which im pretty sure is right.
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