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weqwewe [10]
3 years ago
5

Day and night are caused by what

Chemistry
1 answer:
Aleks04 [339]3 years ago
6 0

Answer:

THE GOD ALMIGHTY!

Explanation:

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What is the mass of a steel cylinder that has a density of 75.0 g/mL and a volume of 12 mL?
bixtya [17]
6.25 grams because the formula is D/V=M so 75/12=6.25
6 0
3 years ago
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What mass of Al would be obtained from the complete reduction of 10.2 tonnes of Al2O3?
Fynjy0 [20]

Answer:

5.4 tonnes.

Explanation:

The first step is to find the molar mass of Al2O3. Aluminum has a molar mass of about 27 and oxygen has a molar mass of about 16, so 2(27)+3(16)= 102g/mol=0.102kg/mol. 10200kg/0.102kg/mol=100,000 moles of Al2O3 in 10.2 tonnes. Multiplying this by the molar mass of the two aluminums, you get a total of 54*100,000=5400000g=5400kg=5.4 tonnes. Hope this helps!

3 0
3 years ago
What would be the greatest difference in using an open ceramic coffee mug rather than an insulated mug with a lid as a calorimet
bekas [8.4K]
Hmmm, I believe the answer is "Exchange of energy with the surroundings"
4 0
3 years ago
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If body fats has a density of 0.94 g/mL and 3.0 liters of fat are removed, how many pounds of fat were removed from the patient?
-Dominant- [34]

Answer:

6.217 pounds

Explanation:

We are given;

  • Density of body fats 0.94 g/mL
  • Volume of fats removed = 3.0 L

We are required to determine the mass of fats removed in pounds.

We need to know that;

Density = Mass ÷ volume

1 L = 1000 mL, thus, volume is 3000 mL

Rearranging the formula;

Mass = Density × Volume

         = 0.94 g/mL × 3000 mL

         = 2,820 g

but, 1 pound = 453.592 g

Therefore;

Mass = 2,820 g ÷ 453.592 g per pound

         = 6.217 pounds

Thus, the amount of fats removed is 6.217 pounds

4 0
3 years ago
The Heliocentric model is when the sun, planets, and stars are orbiting a stationary Earth.
Anarel [89]
False

A heliocentric is when the model is
representing the sun as the center
A geocentric says the earth is at the center of the universe
3 0
2 years ago
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