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jsharma57p7enrw
30.05.2021 •
Chemistry
How many grams does 2.1
moles of SnF, weigh?
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Ответ:
289.8g
Explanation:
Using the formula as follows:
mole = mass/molar mass
Molar mass of SnF = 119 + 19
= 138g/mol
Using mole = mass/molar mass
2.1 = mass/138
mass = 2.1 × 138
mass = 289.8g
Ответ:
Explanation:
as alcohol evaporates at much faster rate compared with water due to its lower boiling temperature (82 compared to 100 degree Celsius), it is able to carry away more heat from the skin. this means for a given amount of time much more alcohol evaporates than water.
hope it helps you