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lbvjy [14]
3 years ago
7

1. There are how many mol of oxygen in 3.5 mol of caffeine.

Chemistry
1 answer:
inysia [295]3 years ago
3 0

Answer:

7 mol

Explanation:

Caffeine molecular formula C8H10N4O2. It has 2 atoms of oxygen.

                          C8H10N4O2         - 2O

                           1 mol                        2 mol

                           3.5 mol                    x mol

x = 3.5*2/1 = 7 mol

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Answer:

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6 0
3 years ago
Why does a metal bond with a non-metal in ionic bondings?? ASAP please
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Aluminum has a density of 2.7 g/cm3, how much space in cm3 would 81 grams of aluminum occupy? Show steps to answering this equat
Evgesh-ka [11]

Answer:

30 cm³

Explanation:

Step 1: Given data

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  • Mass of aluminum (m): 81 g
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V = m/ρ

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3 years ago
Chlorofluorocarbons (CFCs) are no longer used as refrigerants because they destroy the ozone layer. Trichlorofluoromethane (CCl₃
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Answer:

The molar entropy of the evaporation of Trichlorofluoromethan is 83.516 J/molK.

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S=\frac{Q}{T(Kelvins)}

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The molar entropy of the evaporation of Trichlorofluoromethan is 83.516 J/molK.

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3 years ago
if the observed test value of a hypothesis test is outside of the established critical value(s), a researcher would __________.
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