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KatRina [158]
3 years ago
5

Which is the correct answer?

Mathematics
2 answers:
topjm [15]3 years ago
4 0

Answer:

D

Step-by-step explanation:

tensa zangetsu [6.8K]3 years ago
3 0
The correct answer is D
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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
Suppose a study estimated that 68% of the residents of a town (with an error range of ±8 percentage points at 95% confidence) fa
kipiarov [429]
The correct answer would be 62%
5 0
3 years ago
Read 2 more answers
The population of kansas city, missouri was 435,000 in 1990 and 482,300 in 2005. if the population is changing linearly, write a
Jlenok [28]
Find the slope of the line connecting (1990,435000) and (2005,482300):

        482300-435000        47300
m = ----------------------- = ---------------- = 3153/yr (approx)
          2005 - 1990                15 yr

Use the point-slope formula to find the equation of this str. line:

y-435000 = (3153/yr)(x-1990)

The year 2020 is 30 years after 1990.  Thus, the expected pop in 2020 is

given by     y-435000 = 3153(30) = 94590, so that y = 529590.
4 0
3 years ago
The floor of the entryway to an office building will be tranglar. Twi angles will measure 40 and the side between them will have
Hoochie [10]

Answer:

n

Step-by-step explanation:n

4 0
3 years ago
I need help right now! pls
Mamont248 [21]

Answer:

x = 80

Step-by-step explanation:

Because of the parallel lines and the transversal to the left,

x + 67 = 147

x = 80

8 0
2 years ago
Read 2 more answers
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