kody2lewiskl
28.01.2020 •
Chemistry
What is the molar mass of butane, c4h10? express your answer to two decimal places and include the appropriate units.
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Ответ:
molar mass of C4H10 is 58.12 g/mol (2 decimal place)
Explanation:
C4H10 contains carbon and hydrogen atoms. The molar mass of carbon and hydrogen are 12.0107g/mol and 1.00784g/mol respectively.
we will use these values to calculate for the molar mass of butane
molar mass of C4H10 = (12.0107*4) + (1.00784*10)
= 58.1212 g/mol
=58.12 g/mol
Ответ:
20 drops of ethanol dispensed by dropper will be 1.0 mL ethanol.
Explanation:
Mass of 15 drops of ethanol = 0.60 g
Mass of 1 drop of an ethanol =
Mass of 1.0 mL of ethanol = m
Volume of ethanol = 1.0 mL
Density of an ethanol = d = 0.80 g/ml
Number of drops in 0.80 g of ethanol = x
20 drops of ethanol dispensed by dropper will be 1.0 mL ethanol.