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hjlf
3 years ago
15

D. Question 2 - 3x + 7 (-6 - 50) c=7 x = -9

Mathematics
1 answer:
Reil [10]3 years ago
5 0

Answer:

-365

Step-by-step explanation:

-3x+7(-6-50)

  1. -3(-9)+7(-6-50)
  2. 27+7(-6-50)
  3. 27-42-350
  4. -15-350
  5. =-365
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The molar mass of AlCl3 is 133.34 g/mol. How many molecules of AlCl3 are there in 2 g?
Mnenie [13.5K]

To solve this problem, we have to apply mole-concept to this and we would need the molar mass of AlCl3.  2g of AlCl3 contains 9.034*10^21 molecules.

<h3>Number of Molecules in 2g of AlCl3</h3>

The molar mass of AlCl3 is given as 133.34g/mol

Data;

  • mass = 2g
  • molar mass = 133.34g/mol

Using the mole concept, we can equate the molar mass to the number of molecules present in the entity.

133.34g = 6.023*10^2^3

If we equate this

133.34g = 6.023*10^2^3\\2g = x molecules\\x = \frac{2*6.023*10^2^3}{133.34} \\x = 9.034*10^2^1 molecules

From the calculations above, 2g of AlCl3 contains 9.034*10^21 molecules.

Learn more on mole concept here;

brainly.com/question/21150359

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5 0
2 years ago
Find the length of BD and EC.<br> A<br> D<br> 9<br> 8<br> B<br> с<br> BD =<br> EC =
hammer [34]
I think BD is 16 and EC is 9. hope this helps
6 0
3 years ago
(2/3 to the third power) what else equals the answer giving 88 points for it
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Step-by-step explanation:

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3 years ago
Can someone figure out the problem in this image?
erma4kov [3.2K]
Right side:
(1/27)^(2x+10)
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Re-write both sides:
3^(4x-5) = 3^(-6x - 30)

from here, you can solve x 

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7 0
4 years ago
Please help with this thank youu
Arte-miy333 [17]

Answer:

D = 106

e = 54

f = 20

Step-by-step explanation:

its ur answer

6 0
3 years ago
Read 2 more answers
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