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What is the mass of hydrogen gas released from 2.70 g of aluminum metal and hydrochloric acid?
2 Al(s) + 6 HCl(aq) = 2 AlCl3(aq) + 3 H2(g)
a. 0.303 g
b. 0.202 g
c. 0.606 g
d. 0.101 g
e. 0.135 g
Explain how you would prepare 500.0mL of a solution that is 0.100M H2SO4 from concentrated 18.0M H2SO4, which is a liquid density 1.82 g/mL.
How many grams of chloride ion are present in a solution made by dissolving 25.3 g of CaCl2 in enough water to make 325 mL of solution
Given the following thermochemical equations, C2H2(g) + 5/2 O2(g) -----> 2CO2(g) + H2O(l) enthalpy = -1299.5 kJ
Calculate the percent yield of this reaction? 4. Calculate the Atomic economy and Experiment Atomic economy? 5. Calculate E-product
Calculate the wavelength, in nanometers, of the spectral line produced when an electron in a hydrogen atom undergoes the transition from the energy level n = 7 to the level n = 2.
toothpaste contains 0.24% by mass sodium flouride used to prevent dental cavities. One tube contains 119g of toothpaste. How many moles of NaF are in the tube?
The standard entropy of Pb(s) at 298.15k is 64.80 jk-1 mol-1. assume that the heat capacity of Pb(s) is given by Cp,m (Pb,l)/jk-1mol-1 = 32.51 -.00301 t/k. calculate the standard entropy of Pb (l) at 650 C. calculate delta H for the transformation..
In a particular redox reaction, ClO2- is oxidized to ClO4- and Fe3 is reduced to Fe2 . Complete and balance the equation for this reaction in acidic solution. Phases are optional.
These changes are brought about by a heater that supplies heat at a constant rate of 1000 W. Sketch graphs showing a) the temperature vs. time b) the enthalpy vs. time c) Enthalpy vs. temperature for this process. Mark the salient features.
A supernatant from a saturated calcium hydroxide solution is titrated with a standardized hydrochloric acid solution to the methyl orange endpoint
A 4.867 g sample of a monoprotic acid was dissolved in water. It took 30.24 mL of a 0.1578 M NaOH solution to neutralize the acid. Calculate the molar mass of the acid.
Which response includes all of the following substances that are strong electrolytes, and no others. I. LiOHII. Ca(CH3COO)2
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