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Inorganic Chemistry

20cm³of a gaseous hydrocarbon was mixed with 150cm³of oxygen. The mixture was sparked so that the hydrocarbons was completely burned. The gaseous products had a total volume of 130cm³. When this product was passed over to soda lime, the volume of the product decreased to 90cm³. All gases were measured at s.t.p. Deduce the molecular formula of the hydrocarbon.

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Question #221354

Inorganic Chemistry

How many moles of oxygen will react with 12.4 moles of aluminium

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Question #221323

Inorganic Chemistry

A mineral contains 14.7% calcium and 67.5% tungsten the remainder is oxygen, find its Emperical formula

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Question #221272

Inorganic Chemistry

Vapor pressure of water in room temperature is 30 mmHg. Find vapor pressure of NaOH 0,2 m aqueous in that temperature

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Question #221024

Inorganic Chemistry

How many moles of water are needed to react with 10.0 mol O2?

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Question #220460

Inorganic Chemistry

impure copper obtained from minerals contains impurities as iron, gold and silver. after passage of 200 a current for 400s, the mass of anode decreased by 27g and that of cathode increased by 24.5g. calculate the respective percentage of iron and copper originally present (given weight of cu = 63.5g and fe = 56g)

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Question #220410

Inorganic Chemistry

How much aluminium oxide is produced when (6.29x10^1) g of Al reacts with (1.2x10^2) g of MnO?

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Question #220284

Inorganic Chemistry

Substance(A) in a group B of periodic table is yellowish-white delinquescent solid which sublimes.(A) dissolved in with water to form solution (B).a sample of (B) gave a white precipitate (C) on addition of dilute HNO3 and AGNO3 solution . precipitate (C) readily dissolved on the addition of dilute aqueous NH3, through gelatinous white precipitate (D) was formed In its place .(D) was filtered off and dissolved in excess NAOH , forming a clear solution (E), compound (D) was reprecipitate .(A) dissolved unchanged in dry ether,and when this solution was reacted with LIH one of two product (F) or g was formed , depending on whether the LIH one of two product (F)or(G) was formed , depending on whether the LIH was in excess or identity substance A to G.

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Question #220279

Inorganic Chemistry

Write chemical formulae of the two common oxide of sulphur and indicate the oxidation state of sulphur in each one?

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Question #220275

Inorganic Chemistry

Name the anode ,cathode and electrolyte used in the lead storage battery.write the anode and cathode balanced reactions , including the overall discharge reaction that occurs In this battery?

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