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Sveta_85 [38]
3 years ago
15

ASAPPPPP

Mathematics
1 answer:
tester [92]3 years ago
5 0
I think the answer is A
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Simplify the expression-14-(-8)​
Y_Kistochka [10]

Answer:

the answer is -6

Step-by-step explanation:

-14-(-8)=-6.

8 0
3 years ago
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

#SPJ1

5 0
2 years ago
A plane flew for 5 hours heading west and for 4 hours heading south. If the total distance traveled was 3,444 miles, and the pla
Ganezh [65]

Answer:400 miles per hour

Step-by-step explanation:

Let w = speed at which the plane travelled west

Let s = speed at which the plane travelled south

Distance moved in 5 hrs heading west = 5*w = 5w

Distance moved in 4 hrs heading south = 4*s = 4s

Total distance, 3444= 5w + 4s

w = s + 39( 39 miles/hr faster)

5(s+39) + 4s = 3444

5s + 195 + 4s = 3444

9s = 3249

s = 361 miles per hour

w = s + 39 = 361 +39

= 400 miles per hour

4 0
3 years ago
Midpoint of the line with endpoints of (-1,2) and (7,3)
cricket20 [7]
To find the mid point you must

x = (x1 + x2) / 2
y = (y1 + y2) / 2

(3,2.5)
7 0
3 years ago
Whats the area of the shaded region
barxatty [35]

Answer:

36 meter square

<h2>Please mark my answer as brainliest for further answers:)</h2>

4 0
3 years ago
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