A 0.3400 g piece of brass is allowed to react with hydrochloric acid at the base of eudiometer. The hydrogen gas generated in the reaction occupies a volume of 48.1 mL and leaves behind a column of acid that is 3.65cm in height. If barometric pressure is measured to be 0.9978 atm, determine the percentages of copper and zinc assuming the temperature of the solution is 22 degrees celsius.

Q: What volume of hydrogen will be produced at STP if 67.30 g of magnesium is reacted with an unlimited…

A: Number of Moles= Given Mass / Molar Mass

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A:

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A:

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A: According to the given chemical equation, 1 mole of Mg requires 2 moles of HCl to react completely.…

Q: If 0.610g of magnesium was reacted with HCI and 511mL of hydrogen gas was collected over water at 23…

A: given, weight of Mg = 0.610 g   Theoritical yield of H2 = 511 ml   R = 0.082 L.atm.mol^-1.K^-1

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A:

Q: 1. The surface atoms of aluminum metal corrode in air to form an impervious aluminum oxide coating…

A:

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A: Given information,    Moles of Fe = 4.00

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A:

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A:

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A: Phosphorus tribromide reacts with water to produce HBr.

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A:

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A: The balanced chemical equation for the reaction can be represented as follows-

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A:

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Group 15 elements

The elements of group 15 are phosphorus, nitrogen, bismuth antimony, and arsenic. The most abundant element which is present in the air is nitrogen and the percentage of nitrogen present in the air is 78%. In the free state, the elemental nitrogen is present as diatomic gas (N2). In the organic matter obtained from plants and animals, phosphorus is the dominant element present. In nucleic acids, phosphate groups are present. Phosphates are also found in teeth and bones. The other elements arsenic, bismuth, and antimony are found as sulfides. Arsenopyrite, bismuth glance, and stibnite are examples of sulfides of arsenic, bismuth, and antimony respectively.