Recent questions tagged basic concepts of chemistry

+1 vote

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(a) Calculate the number of ***** in 112 g of iron. (b) Calculate the mass of 0.5 ***** of sugar (C12H22O11).

asked Apr 7, 2019 in Chemistry by kratos

+2 votes

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Balance the following equations in an acid medium by the ion-electron method or the half reaction method

asked Apr 4, 2019 in Chemistry by kratos

+1 vote

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Calculate the amount of water produced in gram by the combustion of 8 g of Methane.

asked Apr 3, 2019 in Chemistry by kratos

+2 votes

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10 ml of an aqeuous solution containing 222 mg of calcium chloride (mol. wt. = 111) is diluted to 100 ml.

asked Mar 28, 2019 in Chemistry by kratos

+3 votes

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What will be the molar volume of nitrogen and argon at 273.15 K and 1atm pressure?

asked Mar 26, 2019 in Chemistry by kratos

+2 votes

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Identify the redox reaction taking place in a beaker.

asked Mar 26, 2019 in Chemistry by kratos

+3 votes

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In a reaction: A + B2 → AB2 Identify the limiting reagent, if any, in the following reaction mixtures.

asked Mar 25, 2019 in Chemistry by kratos

+3 votes

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What is limiting reagent.

asked Mar 25, 2019 in Chemistry by kratos

+1 vote

1 answer

Thermal decomposition of a Mn compound (X) at 513 K results in compound Y, MnO2 and gaseous product.

asked Mar 24, 2019 in Chemistry by kratos

+3 votes

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Which one of the following is likely to give a precipitate with AgNO3 solution?

asked Mar 23, 2019 in Chemistry by kratos

+1 vote

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If a compound, on analysis was found to contain C = 18.5%, H = 1.55%, Cl = 55.04% and O = 24.81%,

asked Mar 21, 2019 in Chemistry by kratos

+2 votes

1 answer

What is the oxidation number of oxygen in HCHO compound:

asked Mar 20, 2019 in Chemistry by kratos

+2 votes

1 answer

How does the painting of an iron object prevent rusting?

asked Mar 20, 2019 in Chemistry by kratos

+2 votes

1 answer

Chlorine is prepared in the laboratory by treating manganese dioxide (MnO2) with aqueous

asked Mar 19, 2019 in Chemistry by kratos

+3 votes

1 answer

Calculated the mass of FeSO4.7H2O, which must be added in 100 kg of wheat to get 10 PPM of Fe.

asked Mar 18, 2019 in Chemistry by kratos

+1 vote

1 answer

mass of oxygen = 2.76*10powerof -26 boltzmen constant 1.38*10 power -23

asked Mar 17, 2019 in Mathematics by kratos

+2 votes

1 answer

PCl5 is a- (A) Oxidising agent (B) Reducing agent (C) Oxidizing & reducing agent both

asked Mar 16, 2019 in Chemistry by kratos

+1 vote

1 answer

Define molarity. How it is related with normality ?

asked Mar 14, 2019 in Chemistry by kratos

+2 votes

1 answer

Equivalent weighs of KMnO4 acidic medium, neutral medium and concentrated alkaline medium respectively

asked Mar 14, 2019 in Chemistry by kratos

+1 vote

1 answer

a) Complete and balance the following chemical equations:(i) P4O10 + PCl→(ii) SnCl4 + C2H5Cl + Na →

asked Mar 12, 2019 in Chemistry by kratos

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