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After completing the lab report for chemistry, Alex got her paper back and received a -3.33% error. If the recorded value of the unknown sample in her lab report was 22.5 g, what was the actual value of the sample
Calculate the pH of of a solution prepared by mixing 60.0 mL of 0.160 M HCl with 15.0 mL of water. How much antacid containing 400.0 mg of Mg(OH)2 in 5 mL of water is needed
Explain how you known. Use Lewis dot drawings as part of your explanation. Ag+ + 2NH3 --> [Ag(NH3)2]+
the enthalpy of vaporization of ethanol i 43.5 kj/mole at its normal boiling point of 352 k. using avalue of the molar heat capacity of liquid ethanol of 111.46 j/k/mol
It takes 27.22 mL of NaOH to reach the endpoint. What is the equivalent weight of the acid?
The polymerization rate DP are proportinal to the first power of monomer concentration. What would be the effect of monomer concentration on DP in the thermal polymerization of styrene?
A sample of gas has an initial volume of 2.8 L at a pressure of 755 mmHg. If the volume of the gas is increased to 3.7L, what will the pressure be
When a solution of copper(II) sulfate is mixed with a solution of sodium carbonate, a precipitate forms. Write each of the following equations for the reaction between copper(II) sulfate and sodium carbonate.
If a saturated solution of NH4NO3 at 70 °C is cooled to 10 °C, how many grams of solute will separate if the quantity of the solvent is 94.0 g?
sodium acetate buffer before and after the addition of a) .0070 moles KOH and b) .0070 moles HBR a strong acid. Assume volume remains constant
The temperature is 60 °F throughout . hey guys i already signed up for the web site you are going to send me but i couldn't find the answer
A power company burns approximately 474 tons of coal per day to produce electricity. If the sulfur content of the coal is 1.30% by weight.
Calculate the mass of water formed by the complete reaction of 758 g of propane (C3H8) with excess oxygen
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