Dentists sometimes use laughing gas (dinitrogen oxide, N2O) to keep patients relaxed during dental procedure. A cylinder of laughing gas has a volume of 3m3 (3000L). the pressure is 108kPa, and the temperature is 294K. How many grams of laughing gas are in the cylinder?

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Q: In the laboratory, hydrogen gas is usually made by the following reaction: Zn(s) + 2 HCl(aq) → H2(g)…

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Q: Dentists sometimes use laughing gas (N2O) to keep patients relaxed during dental procedures. A…

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Q: - A balloon containing 5.00 L of argon has a pressure of 102,390 Pa and a temperature of 27.°C. The…

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Q: In the laboratory, hydrogen gas is usually made by the following reaction: Zn(s) + 2 HCl(aq) →…

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Q: Gaseous iodine pentafluoride, IF₅, can be prepared by the reaction of solid iodine and gaseous…

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Q: Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right).…

A: Answer: Mass of CO collected = 0.14g

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Q: Space equippe reaction to generate oxygen. LICIO, (s) → LICI (s) + 2 02 (g) Determine the mass (in…

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Q: A piston holds 15 mL of hydrogen. The pressure is 125 kPa. If the piston’s pressure is increased to…

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Q: The volume of a gas at 25°C and 78 kPa is 12.5 L. The pressure is increased  to 3.5 atm. What final…

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Q: An unknown gas in a balloon weighs 73.53 g. The balloon occupies 20.00 L at 22.0 °C and 1056 mm Hg.…

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Q: what volume of

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Q: Consider the unbalanced chemical equation below: CaSiO3 (s) + HCl (g) --> CaCl2 (aq) + SiCl4 (g) +…

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Q: A gas occupies 17 L at a pressure of 102.3 kPa and 299 K. If the gas is cooled to 250 K and the…

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Q: A single-patient hyperbaric chamber has a volume of 640 L. At a temperature of 22 ∘C, how many grams…

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Q: Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right).…

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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.