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Give an advantage of hard water.

Hard water tastes better.
AB
Answered by Angus B. • Chemistry tutor
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You have 10g of Sodium Carbonate, how many moles do I have to 2dp?

Sodium Carbonate is Na 2 CO 3 The molecular formula mass is 2xNa + 1xC + 3xO 2x23 + 1x12 + 3x16 = 106 g/mol m = 10g Mr = 106 g/moln=m/Mrn = 10/106 = 0.09 mol
SB
Answered by Sophie B. • Chemistry tutor
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What are the shape of p orbitals?

The shape is a figure of 8 across all three axis, with a node at the origin
GD
Answered by George D. • Chemistry tutor
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Part 2: from the empirical formula, calculate the molecular formula if the molecular weight of the substance is 180 g/mol

Molcular weight of CH2O = 30 g/mol 180/30 = 6 Molecular formula = C6H12O6
RT
Answered by Rachael T. • Chemistry tutor
2329 Views

Part 1: Calculate the empirical formula for a substance with the following composition: H 6.71%; C 40.00%; O 53.29%

C = 12 g/molO = 16 g/molH = 1 g/mol Ratio of C = 40/12 = 3.33Ratio of O = 53.29/16 = 3.33Ratio of H = 6.71/ 1 = 6.71Divide largest value by smallest value = 6.71/3.33 = 2Empirical formula = CH2O
RT
Answered by Rachael T. • Chemistry tutor
2720 Views