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Pepsi [2]
3 years ago
15

PLEASE HELP IM DESPERATE.

Chemistry
1 answer:
grin007 [14]3 years ago
8 0

Answer:

Reaction time tests can be used to assess an individual's hand-eye coordination. One test involves catching a 1 metre ruler and measuring the distance, d in metres, that the ruler travelled before being caught. The reaction time t seconds is then calculated using the formula: = √2d/9.8

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Consider the following unbalanced redox reaction:
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Mn04 is being reduced
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3 years ago
A removal of the predator populations from an ecosystem would most likely result in
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The increase of prey

Explanation:

Without predators in the ecosysten prey population would increase

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2 years ago
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What relationship exists between the mass number of an element and the isotopes of that element?
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The mass number plays an important role for elements and their isotopes. Mass number comes from the addition of protons and neutrons (their weight). Isotopes are the elements, but with a different number of neutrons. So in turn, by subtracting the number of protons (atomic number) from the mass, you can find the number of neutrons.
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3 years ago
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The fuel used to power the booster rockets on space shuttles is a mixture of aluminum metal and ammonium perchlorate. The follow
pishuonlain [190]

Answer:

Therefore 373 mole of Al produce 746 mole of water.

Explanation:

Given reaction is

3 Al+3NH₄ClO₄→Al₂O₃+AlCl₃+3NO+6H₂O

From the above reaction it is clear that 3 mole of Al produce 6 mole of water.

Therefore

3 mole of Al produce 6 mole of water.

1 mole of Al produce \frac{6}{3} mole of water.

373 mole of Al produce \frac{6\times 373}{3} mole of water.

                                      = 746 mole of water.

Therefore 373 mole of Al produce 746 mole of water.

7 0
3 years ago
A student trying to determine if a liquid was a mixture or a pure substance made several following observations. Which observati
Keith_Richards [23]

Answer:

Distillation

Explanation:

By using the method of distillation we'll identify if there is other properties of liquid by looking the temperatures,the ordor or the boiling point.

5 0
3 years ago
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