1.

Convert each of the following to its mole:a) 86.84 g of LiBr b) 17.1 g of H2S c) 8.5 g of PH3​

Answer»

Here's your ANSWER mate

1) 86.84g of LiBr

Formula: n= GIVEN mass ÷ molar mass

Where n is NUMBER of moles.

n = 86.84 \div 7  + 80 \\ n = 86.84 \div 87  \\ n = 0.99 \: approx = 1moles\\  \\

2) 17.1g of H2S

n = 17.1 \div 1 \times 2 + 32 \\ n = 17.1 \div 34 \\ n = 0.5 \: moles

3) 8.5g of PH3

n = 8.5 \div 40 + 1 \times 3 \\ n = 8.5 + 43 \\ n = 0.1moles



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