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geniusboy [140]
4 years ago
12

1

Chemistry
1 answer:
k0ka [10]4 years ago
4 0

Answer:

Energy cannot be created or destroyed.

Explanation:

The Law of Conservation of Energy states that energy cannot be created nor destroyed, only converted from one form of energy to another.

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Helppppppppppppppppppppppppppppppppppppppppppppppppp
Anit [1.1K]

Answer:   it is a

Explanation:

6 0
3 years ago
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Assuming all gas is removed from the tank when filling balloons, how many 0.75 L balloons can be filled from a tank that contain
Marrrta [24]

Answer:

278 balloons can be aired.

Explanation:

We apply the Ideal Gases Law to determine the total available volume for each baloon of 0.75L. So we need to divide the volume we obtain by the volume of each baloon.

We determine the moles of CO₂

375 g. 1 mol / 44g = 8.52 moles

V = (n . R . T) / P → (8.52 mol . 0.082 . 298K) / 1 atm = 208.3 L

That's the total volume from the tank, so we can inflate (208.3 / 0.75) = at least 278 balloons

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3 years ago
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100 POINTS!!!!!!! FAST PLEASE
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<h2>Reffer the attachment </h2><h2>please mark as brainlist ❤️❤️</h2>

3 0
2 years ago
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The average human lives 74 years. how many seconds is this? write your answer in scientific notation
Leviafan [203]

Number of second in human lives in scientific notation is 3.9 × 10⁷ second

<u>Given that;</u>

Average human lives = 74 years

<u>Find:</u>

Number of second in human lives in scientific notation

<u>Computation:</u>

Number of second in human lives in scientific notation = 74 × 365 × 24 × 60

Number of second in human lives in scientific notation = 38,894,400

Number of second in human lives in scientific notation = 3.9 × 10⁷ second

Learn more:

brainly.com/question/3712546?referrer=searchResults

8 0
3 years ago
A reaction was suppose to produce 20 L of gas. Only 12 litters of gas were produced in the lab. What is the percent yield for th
pogonyaev

Answer:

\boxed {\boxed {\sf 60 \%}}

Explanation:

Percent yield is a ratio of the actual yield to the theoretical yield. It is found using this formula:

\% \ yield= \frac {actual \ yield}{theoretical \  yield} *100

The actual yield is 12 liters, because that was actually produced in the lab.

The theoretical yield is 20 liters, because that was the expected yield.

\% \ yield= \frac {12 \ L}{20\ L} *100

\% \ yield= 0.6*100

\% \ yield= 60

For this reaction, the percent yield is 60%.

5 0
3 years ago
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