Q. 1) Complete and balanced the following chemical equations. Assume complete reaction and indicate physical states. (a) NH2OH (aq) + H2SEO4 (aq) → (b) 2 N2 (g) + 5_02 (g) → 2 (g) + 2 H20 (1) → (c) _(CH3)3CCH(CO,H)2 (s) + O2 (g) → (d) H3ASO4 (aq) + _ Sr(OH)2 (aq) →

Q: 1. NaHSO, CH, — С- Н H,0 2. НСНО Evaporate 3. СНО + + NH,OH → +Agl+ NH,NO,

A: Balance Chemical equation means no of atoms should be equaal in both side reactant and product

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Q: 1.) NaOEt, EtOH 2.) HCI, H2O, heat

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Q: What is the mass percentage

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Q: Which of the following laws explains the following statement? Acetylene gas, regardless of its…

A: This is the law of chemical proportion .

Q: Question number  2 please

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Q: HOU X 2(e) 95 100 100 X 7500 "Normal" saline has a concentration of about 0.89%, a value that is…

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Q: 5. A 2.000 g sample of CoCl2·xH2O is dried in an oven. When the anhydrous salt is removed from the…

A: By calculating moles of CoCl2 and H2O we can find value of x.

Q: Is the decomposition of CuSO4· 5 H2O a physical or a chemical change? Why?

A: The copper sulfate penthydrate dehydrates to form the clear, anhydrous copper sulfate.

Q: What mass of HCl in grams is neturalized by a dose of milk of magnesia containing 3.26g Mg(OH)2?

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A: Given  3AgNO3 + K3PO4 →Ag3PO4 + 3KNO3

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Q: (s) + 6H

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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.