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Illusion [34]
3 years ago
10

3. Two identical balloons are filled, one with helium and one with nitrogen at the same temperature. If the nitrogen balloon lea

ks at the rate of 75 mL per hour, what will be the rate of leakage from the helium balloon
Mathematics
1 answer:
postnew [5]3 years ago
6 0

Answer:

140.32mL per hour

Step-by-step explanation:

Rate of leakage of nitrogen ballon = 75 mL/h

Rate of leakage of helium ballon = x

Molar mass of nitrogen= Mn = 14

Molar mass of helium = Mh = 4

Effusion formula

Rate of effusion of helium/ Rate of effusion of nitrogen= √(Molar mass of nitrogen/Molar mass of helium)

Rate of effusion of helium = 75mL/h * √(14/4)

= 140.32mL/h

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Solve this equation 90x-60y is equal to 68 and 90x-70y is equal to 91​
Tanzania [10]

Answer:

Step-by-step explanation:

90x - 60y = 68.....multiply by -1

90x - 70y = 91

---------------------------

-90x + 60y = -68 (result of multiplying by -1)

90x - 70y = 91

---------------------------add

-10y = 23

y = -23/10 <===

90x - 60y = 68

90x - 60(-23/10) = 68

90x + 138 = 68

90x = 68 - 138

90x = - 70

x = -70/90

x = -7/9 <=====

3 0
3 years ago
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Nonsense will be reported!!​
Contact [7]

Answer:

See below

Step-by-step explanation:

d = 78° (Vertical angles)

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Measure of angles d and h are are not equal. therefore they are not congruent.

7 0
2 years ago
Paula is located at a position of −12 feet relative to the ground. Which statement shows the distance she is from ground level?
Greeley [361]

The absolute value of a number is the distance from point to the origin. Since Paula is located at a position of −12 feet relative to the ground, then the distance from point -12 on the number line to the origin is 12 (distance cannot be negative).

Thus, |-12|=12 and Paula is at a distance of 12 feet.

Answer: correct choice is C

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3 years ago
Square MATH has a side length of 7 inches. which three-dimensional object will be formed by continuously rotating square MATH ar
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Answer:

a right cylinder with a radius of 7 inches

4 0
3 years ago
Solve for x. 4+3/5(15+2x)=25
erik [133]
If you would like to solve 4 + 3/5 * (15 + 2x) = 25 for x, you can do this using the following steps:

4 + 3/5 * (15 + 2x) = 25
3/5 * (15 + 2x) = 25 - 4
9 + 6/5 * x = 21
6/5 * x = 21 - 9
6/5 * x = 12        /*5/6
x = 12 * 5/6
x = 10

The correct result would be x = 10.
6 0
3 years ago
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