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How many grams of calcium nitrate need to be dissolved in 250 mL of water to form a solution that has a freezing temperature of -3.2 C?
What is the volume (in mL) needed to make a 0.1273 M NaOH solution with 0.02534 moles of NaOH?
a mixture containing 235 mg of helium and 325 mg of neon has a total pressure of 453 torr. what is the partial pressure of helium in the mixture?
Determine the value of pH of given solutions that are (a) a solution that is 0.40 M CH3CO2H, (b) a 0.40 M CH3CO2H solution, (c) 0.20 M NaCH3CO2. And explain your answer too?
A benzylic carbocation is generated under the conditions of part A. would the presence of a para CH3O- group on the benzene ring
Using condensed electron configurations and Lewis electron-dot symbols to depict the monatomic ions formed from each of the following reactants, predict the formula of the compound the ions produce. N and Mg
if 5.50 mol calcium carbide reacts with an excess water, how many moles of acetylene will be produced?
The zinc content of a 1.23 g ore sample was determined by dissolving the ore in HCl, which reacts with the zinc, and then neutralizing excess HCl with NaOH. Zn+2HCl-->ZnCl2+H2
You are given solutions of HCl and NaOH and must determine their concentrations. You use 27.8 mL of NaOH to titrate 100. mL of HCl and 22.8 mL of NaOH to titrate 50.0 mL of 0.0790 M H2SO4.
A compound contains 44.26% carbon atoms, ,3.69% hydrogen atoms, and 7.79% fluorine atoms by mass. Each molecule of this compound contains one fluorine atom. What is the total number of carbon, hydrogen, and fluorine atoms in one molecule of this c..
If the methane contained in 3.00 L of a saturated solution at 25 was extracted and placed under STP conditions, what volume would it occupy.
Calculate how many grams of phosphorus are present in 2.68 moles of phosphorus pentachloride(PCl5) and also determine the numbers of moles of chlorine are present in 3.71 grams of phosphorus pentachloride?
Use data from appendix iib in the textbook to calculate the equilibrium constants at 25 degrees Celsius for each of the following reactions:
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