Question:1 You dissolve 312 mg of a compound (AwBxCyDz) in water producing 14.31 mL of solution and use...

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Chemistry

Question:1
You dissolve 312 mg of a compound(A_wB_xC_yD_z) in waterproducing 14.31 mL of solution and use the photometer and standardsolutions to find that the concentration of the A is 1.24 x10^-2 M. The molar mass of A is 114.52 g/mol.
Moles of A in the solutionsample:________________
Mass of A in the solution sample:_
Mass % of A in the compound: _
Moles of A in 100 grams of the compound:__________________

Question:2
The compound, A_wB_xC_y, like allcompounds has an oxidation number of 0 (zero). The oxidation numberof A is +1, the oxidation number of B is +2, and the oxidationnumber of C is â€“1. If there are two moles of A for every 3 moles ofC in one mole of the compound, what is the empirical formula of thecompound?

Question:3
Given the compound,K_wAl_x(SO₄)_y(H₂O)_z.100.00 grams of the compound contains 8.24 grams of potassium and5.69 grams of aluminum. What is the formula of the compound?

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4.4 Ratings (904 Votes)

weight of compound AwBxCyDz 312 mgvolume in water 1431 mLconcentration of the A 124 x 102 Mmeans 124 x 102 moles in 1000ml water but we have1431 mlmoles of A will be there1 Moles of A in 272 Moles of See Answer

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