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Q1: Describe each of the following equations in terms of ( 1) number of particles and ( 2) number of moles:
a. 2Al(s) +3Cl2(g)à 2AlCl3(s)
b. 4HCl(g) + O2(g) à 2Cl2(g) + 2H2O(g)
Q2: Ammonia is produced by the reaction of hydrogen and nitrogen. N2(g) + 3H2(g) à 2NH3(g)
a. How many moles of H2 are needed to react with 1.0 mol of N2?
b. How many moles of N2 reacted if 0.60 mol of NH3 is produced?
c. How many moles of NH3 are produced when 1.4 mol of H2 reacts?
How many moles of stem are produced at 2.00 atm and 202.0 celcius by the complete combustion of 12.50 L of methane gas?
The freezing point of pure benzene is 5.5 Celsius and its freezing point constant is 5.12 C/m. Calculate the molecular weight of the unknown.
at 665 degc keq is 0.234 for the following reaction4as bg ?2cs dgif b gas at 0.221 bar is injected into a container
A sample of nitrogen gas at a pressure of 698 mm Hg and a temperature of 86oC, occupies a volume of 14.4 liters. If the gas is heated at constant pressure to a temperature of 116 oC, what the volume of the gas sample will be in L.
Which of the following substances would have a standard enthalpy of formation equal to O kj/mol. Select all that apply
According to the VSEPR theory, the electrostatic repulsion between electron pairs surrounding an atom causes. An electron sea to form
One molecular form of elemental sulfur is a ring of eight sulfur is a ring of eight sulfur atoms. As one molecule of this element is burned to make sulfur trioxide, how many oxygen molecules are used?
The compounds 1-propanol as well as propanone has approximately the same molar mass. Based on dissimilarity in their intermolecular bonding, rank these compounds in order of increasing boiling point
A solution of ammonia and water contains 3.00×1025 water molecules and 5.10×1024 ammonia molecules. How many total hydrogen atoms are in this solution?
The boiling point of a liquid increases as the pressure above the liquid increases. In contrast to boiling food in an open pot, pressure cookers trap the steam, which raises the internal pressure, which raises the boiling point of water, causing a..
Explain what is the volume occupied by 29.4g of argon gas at a pressure of 1.20atm as well as a temperature of 456K? Explain would the volume be different if it was 29.4g of helium
Calculate the amount of heat liberated (in kJ) from 421 g of mercury when it cools from 91.0°C to 11.0°C.
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