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tekilochka [14]
3 years ago
6

My question is in the picture I tried to multiply -7 on both sides and got -147 I don't know if it's correct or if it's the righ

t way to do it.

Mathematics
2 answers:
Mars2501 [29]3 years ago
7 0

Answer:

-3

Step-by-step explanation:

-7b = 21

/ -7     / -7

b = -3

Elena L [17]3 years ago
5 0

Answer:

-3

Step-by-step explanation:

Hope this helped have an amazing day!

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Para el CO₂ sabemos que:

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Entonces, si tenemos una masa de 28 g, podemos escribir:

volumen = masa/densidad

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Para obtener la masa molar (es decir, la masa de un mol de esta sustancia) simplemente sumamos la masa de un mol de cada componente.

Carbono: tiene una masa molar de 12 g/mol

Oxígeno: tiene una masa molar de 16 g/mol (y tenemos dos oxígenos)

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3 years ago
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