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Serga [27]
4 years ago
8

Which of these angles are complementary?

Mathematics
1 answer:
lesya692 [45]4 years ago
5 0

Answer: C. 45 degrees and 135 degrees

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Determina la masa molar y el volumen que ocupa la siguiente sustancia CO2, si su masa es de 28 gr. *
balandron [24]

Answer:

Para el CO₂ sabemos que:

densidad = 0,001976 g/cm³

Sabemos que:

densidad = masa/volumen

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

volumen = masa/densidad

volumen = (28g)/(0,001976 g/cm³) = 14,170 cm^3

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)

entonces la masa molar va a ser:

masa molar = 12g/mol + 2*16g/mol = 44 g/mol

Es decir, un mol de CO₂, pesa 44 gramos.

7 0
3 years ago
Find the equation of the lien shown.
Mnenie [13.5K]

Answer:

y = \frac{1}{2} x

Step-by-step explanation:

the equation of a line passing through the origin is

y = mx ( m is the slope )

calculate m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (0, 0) and (x₂, y₂ ) = (6, 3) ← 2 points on the line

m = \frac{3-0}{6-0} = \frac{3}{6} = \frac{1}{2}

y = \frac{1}{2} x ← equation of line

7 0
2 years ago
A
kramer

Step-by-step explanation:

the sum of a number and 2 is no less than the product of 9 and the same number

3 0
3 years ago
PLEASE HELPPPP MEEEEEE!!!!
wlad13 [49]
Answer:

It’s B

Step-by-step explanation:


8 0
3 years ago
There is 2 parts. but , help​
icang [17]

Answer: B

Step-by-step explanation:

6 0
3 years ago
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