3 years ago

(04.02 MC)

Chemistry

1 answer:

bagirrra123 [75]3 years ago

5 0

Answer:

it is carboan

Explanation:

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How many moles of disulfur decafluoride are present in 3.99 x 104 molecules of this compound? moles

arsen [322]

<u>Answer:</u> The number of moles of disulfur decafluoride is $6.62\times 10^{-20}$

<u>Explanation:</u>

We are given:

Number of disulfur decafluoride molecules = $3.99\times 10^4$

According to mole concept:

$6.022\times 10^{23}$ number of molecules are contained in 1 mole of a compound.

So, $3.99\times 10^4$ number of molecules will be contained in = $\frac{1mol}{6.022\times 10^{23}}\times 3.99\times 10^{4}=6.62\times 10^{-20}mol$ of disulfur decafluoride.

Hence, the number of moles of disulfur decafluoride is $6.62\times 10^{-20}$

6 0

3 years ago

What are the solutions to the quadratic equation 2x2 + 10x - 48 = 0?<br>

Natali [406]

Answer:

Explanation:

$2x^2+10x-48\\=2\left(x^2+5x-24\right)\\x^2+5x-24\\=\left(x^2-3x\right)+\left(8x-24\right)\\=x\left(x-3\right)+8\left(x-3\right)\\=\left(x-3\right)\left(x+8\right)\\=2\left(x-3\right)\left(x+8\right)\\2\left(x-3\right)\left(x+8\right)=0\\x-3=0\\x = 0+3\\x = 3\\x+8=0\\x+8-8=0-8\\x=-8\\x=3,\:x=-8$