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Explain what volume of a concentrated HCL solution, which is 36.0% HCL by mass and has a density of 1.179 g/mL, must be used to make 5.30L of an HCL solution with a pH of 1.7?
at a particular temperature and a0 2.57 10-3 m concentration versus time data were collected for this reaction and a
Use wedge-and-dash bonds for the substituent groups, and be sure that they are drawn on the outside of the ring, adjacent to each other
What would the change in temperature be in each change if 1 mole of an ideal gas is subjected to numerous changes in state, C= 12.47 J/Kmol.?
Hydrogen cyanide (and organic nitriles, which contain the cyano group) can be catalytically reduced with hydrogen to form amines
q1. what is the mass number of an iron atom that has 28 neutrons?q2. calculate the number of neutrons of 239pu. q3.
before the civil war the south graded with the north and with england. it sold cotton and bought manufactured goods
A gas occupying a volume of 246 mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm.
A molecular compound contains 92.3% carbon and 7.7% hydrogen by weight. If 0.152 mol of the compound weighs 3.95 g, what is its molecular formula?
A liquid substance has a vapor pressure of 450.0 mmHg at 262.0 degrees celsius and 760.0 mmHg at 325.0 celsius. a) what is the heat of vaporization of this substance? b) what is its normal boiling point?
at 25degc k 0.090 for the following reaction.h2og cl2og reverse reaction arrow 2 hoclgcalculate the concentrations of
If the surface area of a human body is 16,100 square centimeters, what is the total weight of the atmosphere on a human body
Calculate ?H for the reaction 2C(s) + H2(g) ? C2H2(g) given the following reactions and their respective enthalpy changes
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