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Harneet Kaur

Harneet K.

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INSTANT ANSWER

Arrange the following groups of atoms in order of increasing size. (Use the appropriate <, =, or > symbol to separate substances in the list.) (a) Rb, Be, Na

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INSTANT ANSWER

If 183 J of heat is applied to a 52 g sample of mercury, how many degrees will the temperature of the sample of mercury increase? (See the table below.)

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INSTANT ANSWER

Consider the following reaction. CH4(g) + 2 O2(g) CO2(g) + 2 H2O(l) ?H = -891 kJ Calculate the enthalpy change for each of the following cases. (a) 5.00 g methane is burned in excess oxygen. WebAssign will check your answer for the correct number of significant figures. kJ (b) 3.00???103 L methane gas at 735 torr and 26°C is burned in excess oxygen.

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INSTANT ANSWER

A balloon is inflated to its full extent by heating the air inside it. In the final stages of this process, the volume of the balloon increases due to the addition of 1.70???108 J of energy as heat. Assume that all the heat comes from the combustion of propane, and that the balloon expands against a constant pressure. C3H8(g) + 5 O2(g) ? 3 CO2(g) + 4 H2O(l) ?H = ?2221 kJ What mass of propane (in g) must be burned to furnish this amount of energy, assuming the heat transfer process is 61.0% efficient?

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INSTANT ANSWER

Consider the following reaction. CH4(g) + 2 O2(g) CO2(g) + 2 H2O(l) ?H = -891 kJ Calculate the enthalpy change for each of the following cases. (a) 5.00 g methane is burned in excess oxygen. WebAssign will check your answer for the correct number of significant figures. kJ (b) 3.00???103 L methane gas at 735 torr and 26°C is burned in excess oxygen.

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INSTANT ANSWER

The density of a gaseous organic compound is 4.16 g/L at 40.°C and 1.89 atm. What is its molar mass?

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INSTANT ANSWER

What is the density (in g/L) of uranium hexafluoride (UF6) at 785 mmHg and 37°C?

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INSTANT ANSWER

Assuming no change in temperature and pressure, calculate the volume of O2 (in liters) required for the complete combustion of 13.8 L of butane (C4H10). 2 C4H10(g) + 15 O2(g) 8 CO2(g) + 10 H2O(l)

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INSTANT ANSWER

The equation for the metabolic breakdown of glucose (C6H12O6) is the same as the equation for the combustion of glucose in air C6H12O6(s) + 6 O2(g) 6 CO2(g) + 6 H2O(l) Calculate the volume of CO2 produced at 37°C and 1.00 atm when 5.00 g of glucose is used up in the reaction.

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INSTANT ANSWER

When coal is burned, the sulfur present in coal is converted to sulfur dioxide (SO2), which is responsible for the acid rain phenomenon. S(s) + O2(g) ? SO2(g) If 1.51 kg of S are reacted with oxygen, calculate the volume of SO2 gas (in mL) formed at 27.4°C and 1.01 atm.

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