Hydrogen gas is produced when magnesium metal reacts with hydrochloric acid. In the lab, a student collects 0.002702 g of hydrogen gas over water in a eudiometer at 23°C. The atmospheric pressure is 794 mmHg. What volume (in mL) of dry hydrogen gas would be collected? Temperature °C Water Vapor Pressure (mmHg) 19 16.5 21 18.7 Volume of dry gas = mL 23 21.1 25 23.8 27 26.7 29 30.0

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A: In accordance with Boyle's Law           PV = constant

Q: 2. A 0.136 g sample of an unknown metal (X) reacted with excess hydrochloric acid according to the…

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Q: A gas sample with a volume of 5.3 L has a pressure of 745 mmHg at 29 ∘C.

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Q: A gas sample at STP contains 1.15 g oxygen and 1.55 g nitrogen. What is the volume of the gas…

A: At STP which is standard temperature and pressure, one mole of any gas occupy 22.4 L of volume.

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A: From the combined gas laws we can calculate the volume .

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A:

Q: 13.  10.5 g of  a gas has the pressure of 3.18 atm.   Calculate grams of gas at the pressure of 899…

A: Answer is explained below.

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Q: A student reads a barometer in the laboratory and finds the prevailing atmospheric pressure to be…

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A:

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A: Provided initial pressure=1520mmHg Since, 760mmHg=1atm So, 1 mmHg=(1/760) mmHg So, 1520mmHg=…

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A: We will use the ideal Gas Equation for solving this problem.

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A:

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.