Calcium hydride reacts with water to form calcium hydroxideand hydrogen gas. (a) Write a balanced chemicalequation for the reaction. (b) How many grams of calciumhydride are needed to form 4.500 g of hydrogen?

Q: Calculate the theoretical yield (mass in grams) of the aluminium sulphate produced.

A: Aluminium sulphate is prepared by                     2 Al + 3 H2SO4 → Al2(SO4)3 + 3 H2↑molar mass…

Q: Write the balanced chemical equation for conversion of Al(s) to KAl(SO4)2·12H2O(s) in aqueous…

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Q: (a) When the metallic element sodium combines with thenonmetallic element bromine, Br21l2, what is…

A: Below are the answers to all the parts.

Q: What is the chemical reaction used for the preparation of methane in a laboratory using sodium…

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Q: Write the balanced equation, then outline the steps necessary to determine the information requested…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: Consider the solid Na2CO3 dissolving in water. (a) Write the balanced dissociation equation with…

A: Na2CO3 is an ionic compound made of Na+ and CO32- . Hence when Na2CO3 dissolves in polar protic…

Q: What is the net ionic equation for the reaction of acetic acid, CH3CO2h, with NH3?

A: Here, we have to write the net ionic equation for the reaction of acetic acid, CH3CO2H, with NH3.

Q: How many grams of chromium is needed to produce 10 grams of chromium (iii) oxide?

A:

Q: many grams of oxygen would be needed to react with C6H12 to produce 7.15 grams of carbon dioxide?

A: Given -> Weight of CO2 = 7.15gm

Q: (a) List four physical characteristics of a solid metal. (b) List two chemical characteristics of a…

A: PHYSICAL CHARACTERISTICS: The properties of elements or compounds noticed without any change in the…

Q: Aluminum reacts vigorously with iodine in a synthesis reaction.  (a) Write a balanced chemical…

A: Well, to calculate the amount of product, we have to first find out the limiting reagent. and using…

Q: Part A)  Place the following elements in order of increasing atomic radii: Mg, Na, Rb, Cl.…

A:

Q: Predict the product(s) and write a balanced equation for each of the following redox reactions:(a)…

A: The balanced equation of the following redox reaction has to be given,

Q: (7)What is the volume of 2.75 X 10^24 molecules of nitrogen trihydride has?

A: Since, Moles is the ratio of mass to the molar mass of that atom or molecules. Also, Number of atoms…

Q: (iv) Reduction of VO2+ to produce VO²+ (v) Neutralization of sulfuric acid by barium hydroxide (vi)…

A: (iv) since the reduction reaction means gain of electrons Hence V in VO2+ will gain 1 electron and…

Q: If Phoebe starts with 2.593 g of magnesium carbonate, how many grams of carbon dioxide gas would be…

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Q: What compound precipitates when aqueous solutions of Fe2(SO4)3 and LiOH are mixed? (b) Write a…

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Q: Water can decompose into H2H2 and O2O2 via electrolysis. How many moles of H2H2 could theoretically…

A: 2.24 moles of H2H2 could theoretically be obtained from 80.6 g water.

Q: How much aluminum can be produced from 1.50 ton of Al2O3?

A: The molar mass of aluminum is = 26.981539The molar mass of oxygen is = 15.999 g/molThe molar mass of…

Q: 6. If 1.85 L of diphosphorous pentoxide form at a temperature of 50.0 °C and 1.12 atm, what is the…

A: Given that, 1.85 L of diphosphorus pentoxide (P2O5) form at a temperature of 50.0°C and 1.12 atm. We…

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A:

Q: Write the net ionic equation for the reaction of calcium nitrate with sodium sulfate.

A: Write the net ionic equation for the reaction of calcium nitrate with sodium sulfate.

Q: Consider the series of reactions to synthesize the alum (KAl(SO4 )2 · xH2O(s)) from the…

A: To calculate the moles of alum formed from the given number of moles of each reagent, we would use…

Q: A novel process for obtaining magnesium from sea water involves several reactions. Write a balanced…

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Q: What compound precipitates when aqueous solutions of Fe2(SO4)3 and LiOH are mixed? (b) Write a…

A: a) The compound precipitates when aqueous solutions of Fe2(SO4)3 and LiOH are mixed Fe(OH)3

Q: (a) Two unlabelled bottles are suspected to contain beryllium and magnesium. (i) Suggest a simple…

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Q: theoretical yield

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Q: Balance

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Q: write a balanced chemical equation

A: Chemical reactions can write in equation form , left side reactants and right side products and…

Q: Describe how to determine the oxidation number of sulfur in(a) H₂S and (b) SO₃²⁻.

A: To find: The oxidation number of sulfur in H2S and SO32-

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Q: Write the balanced equation for the complete oxydation of C4H8O.

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Q: How many moles of hydrogen gas would be required to produce 25 moles of H2O?

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Q: (i) How is HNO3 prepared commercially?(ii) Write chemical equations of the reactions involved.(iii)…

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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.