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zhenek [66]
3 years ago
12

2 planets are over 4 million light years away. Explain how you would use a ray of light to determine which planet is farther awa

y. Use DATA to help verify your reasoning.
Chemistry
2 answers:
Sergio039 [100]3 years ago
8 0
Look on google......
grigory [225]3 years ago
4 0
Https://earthsky.org/space/what-is-a-light-year
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Help me plsss
Yuki888 [10]

Answer:

8.34

Explanation:

1) how much moles of NH₃ are in the reaction;

2) how much moles of H₂ are in the reaction;

3)  the required mass of the H₂.

all the details are in the attachment; the answer is marked with red colour.

Note1: M(NH₃) - molar mass of the NH₃, constant; M(H₂) - the molar mass of the H₂, constant; ν(NH₃) - quantity of NH₃; ν(H₂) - quantity of H₂.

Note2: the suggested solution is not the shortest one.

8 0
3 years ago
The amount of gravitational force impacts the weight of objects.<br> true or false
ElenaW [278]

Answer:

True

Explanation:

It's how gravity works.

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3 years ago
How many moles are present in 1.75 g of zinc sulfate, Znso, ?
Cerrena [4.2K]

Explanation:

We assume you are converting between grams ZnSO4 and mole. You can view more details on each measurement unit: molecular weight of ZnSO4 or mol This compound is also known as Zinc Sulfate. The SI base unit for amount of substance is the mole. 1 grams ZnSO4 is equal to 0.0061941519772353 mole.

7 0
3 years ago
What is the main exception in the atomic radius? Explain.
yarga [219]

Answer:

The atomic radius of atoms generally decreases from left to right across a period. There are some small exceptions, such as the oxygen radius being slightly greater than the nitrogen radius. Within a period, protons are added to the nucleus as electrons are being added to the same principal energy level.

hope this helps!

7 0
3 years ago
What is the minimum amount of heat required to completely melt 20.0 grams of ice af it's melting point
Veseljchak [2.6K]
The answer is 6608J ..
8 0
3 years ago
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