Calculate no of moles in 42g of carbon ?

Explanation:

Given :

Mass in grams = m = 42 g

Molar Mass = M = 12

Required:

No. of moles = n = ?

Formula :

m = m / M

Solution:

n = 42 / 12

n = 3.5 moles

pla·gia·rism

/ˈplājəˌrizəm/

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noun

the practice of taking someone else's work or ideas and passing them off as one's own.

explanation:

c is the answer because when something is left after something evaporates that shows the chemical change.