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determine the amount of heat energy needed to convert 255g of substance x from 40 degrees to 300 degrees
What is the Molarity of a solution prepared by diluting 55mL of .65 M hydrochloric acid solution to a final volume of 155mL by adding water.
There are two naturally occurring isotopes of bromine. 79Br has a mass of 78.9183 amu. 81Br has a mass of 80.9163 amu.
Assuming that the calibration curve passes through the origin, what absorbance would be recorded for a solution with a Pb(NO_3_)_2_ concentration of 0.335 M.
a gas has a volume of 590mL at a temperature of -55.0 C. what volume will the gas occupy at 30.0C?
Nitrogen is contained in a 300 ml vessel at 400 mm Hg and 10°C. How many grams of nitrogen are in the vessel?
What is the power output of the turbine? H1= 1322.6 Btu/lbm v1=3.058 (ft)^3/lbm H2= 1148.6 Btu/lbm v2=78.14 (ft)^3/lbm
A chemist dissolves 0.9 g of an unknown monoprotic (one acidic H) acid in water. She finds that 14.6 mL of 0.426 M NaOH are required to neutralize the acid.
Hydrogen cyanide is prepared from ammonia (NH3) and natural gas (CH4).2 NH3 (g) + 3 O2 (g) + 2 CH4 (g) → 2 HCN (g) + 6 H2O (g)
calculate the mass of sodium nitrate required to produce 7.00 grams of oxygen according to the following reaction: 2NaNO3 = 2NaNO2 + O2
Determine mass of water is contained in 2.8 Litres of the vapor in this solution at 55 degree celcius temperature express your answer in grams
theoretically feasible in a solution that initially 0.250 M in each ion? c.) If separation is feasibe in eithee (a) or (b), what ranfe of anode potential (vs. SCE) should be used?
A mixture of three gases, A, B, and C, is at a total pressure of 9.38 atm. The partial pressure of gas A is 1.88 atm and that of gas B is 2.32 atm. What is the partial pressure of gas C?
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