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Alisiya [41]
3 years ago
8

Many times, during a chemical reaction, energy is given off. this type of chemical reaction can be termed

Chemistry
1 answer:
WITCHER [35]3 years ago
3 0
Physical can be seen
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Please help me with this I will give out extra points with the brain thing if you help me with this science question 1/7 image b
oksian1 [2.3K]

Answer:

D) The baby will continue to move forward as the car slows and be push into the padded car seat.

Explanation:

Newton's first law states that an object tends to be in a state of rest or motion unless and until an unbalanced external force acts on it. This means a body would continue to be in a state of motion unless external force stops it. A body in the state of rest will remain at rest unless an external force moves it.

An infant car seat is made to face the rear of the car. This is because, in case of a front-end collision, the car would come to a sudden stop but the bodies inside the car are in a state of motion and a sudden halt will cause the body to push in the opposite direction.

Thus, for an infant in the car, it would be a safer measure to place the seat facing the rear o the car because in this case, it would cause the baby to safely collide with the padded seat of the car.

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3 years ago
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X is girl, and y is boy, they are formed by fission.
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Ammonia react with phosphorus acid to form a compound that contains 28.2% of nitrogen 20.8%, phosphorus 8.1% of hydrogen 42.9%ox
____ [38]

Answer:

Empirical formula will be (NH₄)₃PO₄, which matches the molecular formula

Explanation:

This is the reaction:

NH₃ + H₃PO₄ → 28.2% N, 20.8% P, 8.1% H, 42.9% O

In 100 g of compound we have:

28.2 g N

20.8 g of P

8.1 g of H

42.9 g of O

Now we divide each  between the molar mass:

28.2 g / 14 g/mol = 2.01 mol

20.8 g / 30.97 g/mol = 0.671 mol

8.1 g / 1 g/mol = 8.1 mol

42.9 g / 16 g/mol =  2.68 mol

And we divide again between the lowest value of moles

2.01 mol / 0.671 mol → 3

0.671 mol / 0.671 mol → 1

8.1 mol / 0.671 mol → 12

2.68 mol / 0.671 mol → 4

Molecular formula will be: N₃PH₁₂O₄ → (NH₄)₃PO₄

Empirical formula will be (NH₄)₃PO₄, which matches the molecular formula

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4 years ago
Which is not a form of potential energy?<br><br> gravitational<br> chemical<br> elastic<br> thermal
Elena L [17]

Answer:Thermal Energy is not a form of potential energy

Explanation:

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3 years ago
This is hard, isn't it? please help me though. PLEASE
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I think it might be A. i am not totally sure though
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