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Calculate the mass of sugar (C12H22O11) that must be dissolved in 700 g of water to prepare 20% sugar solution
Calculate the number of moles of Cl atoms in 1.20×1024 of magnesium chloride, MgCl2.
how do you find the specific heat of platinum if 23.6 grams is heated from 10.0c to 20.0c using 30.68 J of heat.
Two scientists are experimenting with pure samples of isotope X, a highly radioactive substance. The first scientist has a sample with a mass of 20 grams.
An analyst was attempting to determine the percent KHP in an unknown sample. The analyst found the molarity of the standardized NaOH solution to be 0.1022 mol/L.
Determine at what minimum angle relative to the centerline perpendicular to the doorway can someone outside the room hear no sound?
the pressure of a sample of helium in a 1.00-liter container is .988 atm. What is the new pressure if the sample is placed in a 2.00 L container?
Consider a solution formed by mixing 48.0 mL of 0.100 M H2SO4, 36.0 mL of 0.100 M HOCl, 25.0 mL of 0.200 M NaOH, 2 mL of 0.100 M Ca(OH)2, and 10.0 mL of 0.150 M KOH. Calculate the pH of this solution.
If 76.0 mL of .150 M HCL is needed to neutralize all the NH3 from a 2.25-g sample of organic material, calculate the mass percentage of nitrogen in the sample.
What is the maximum number of electrons that can be identified with each of the following sets of quantum numbers? In some cases, the answer may be "none."
A sample of oxygen gas has a volume of 131 L at 25°C and a pressure of 0.982 atm. Calculate the volume of this oxygen sample at STP.
A 250 mL stock solution contains 2.3 M Ca(CN)2. When 100 mL of the stock solution is diluted to 125 mL, how many moles of CN- ions will be contained in the dilute solution.
how many atoms are in a small piece of aluminum foil that has a mass of 0.100 g? the mass of an atom of aluminum is 27.0 amu
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