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Verizon [17]
3 years ago
14

Two atoms that isotopes of one another must have number of what

Chemistry
1 answer:
ANTONII [103]3 years ago
3 0
The number of protons are same for the isotopes of an element.

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When the south magnetic pole of a magnet is placed near the south pole of another magnet, the two magnets will _____ one another
Ivanshal [37]

Answer:

A. Repel

Explanation:

A magnet comprises of north and south poles.

When the south magnetic poles of two magnets are brought together, the magnets will repel because they are like charges and like

charges repel each other.

But when the north magnetic pole of one magnet is brought together with the South Pole of another magnet, both magnets will attract because they have different charges + and - . Positive and negative charges attract .

8 0
3 years ago
When did Pangaea begin to break apart?
LUCKY_DIMON [66]
About 250 years ago ΩαΨ
7 0
4 years ago
Read 2 more answers
Plz help guys ASAP! <br> Thanks in advance
MariettaO [177]

Answer:

3.6 moles

Explanation:

The balanced equation for the reaction is given below:

N₂ + 3H₂ —> 2NH₃

From the balanced equation above,

1 mole of N₂ reacted with 3 moles of H₂ to produce 2 moles NH₃.

Next, we shall determine the limiting reactant. This can be obtained as follow:

From the balanced equation above,

1 mole of N₂ reacted with 3 moles of H₂.

Therefore, 3.2 moles of N₂ will react with = 3.2 × 3 = 9.6 moles of H₂.

From the calculation made above, we can see that it will take a higher amount (i.e 9.6 moles) of H₂ than what was given (i.e 5.4 moles) to react completely with 3.2 moles of N₂.

Therefore, H₂ is the limiting reactant and N₂ is the excess reactant.

Finally, we the greatest quantity of ammonia, NH₃ produced from the reaction.

In this case, the limiting reactant will be use because all of it is consumed in the reaction.

The limiting reactant is H₂ and greatest quantity of ammonia, NH₃ produced can be obtained as follow:

From the balanced equation above,

3 moles of H₂ reacted to produce 2 moles NH₃.

Therefore, 5.4 of H₂ will react to produce = (5.4 × 2)/3 = 3.6 moles of NH₃

Thus, the greatest quantity of ammonia, NH₃ produced from the reaction is 3.6 moles

4 0
3 years ago
1.00176 x 103<br> Scientific notation
Ber [7]

Answer:

1.0318128 × 10^2

Explanation:

7 0
3 years ago
Which of the following substances heats the fastest?
Aneli [31]

Answer:

Zinc

Explanation:

The specific heat capacity can be described as the amount of heat required to raise the temperature of a substance by one degrees Celsius. It is represented by C or S. The greater the carrying capacity of a substance, the more will be the heat required for that substance.

As we can see in the information given in the question, the specific heat capacity of zinc is the lowest as compared to steel, water and aluminium. Hence, zinc is the correct option.

7 0
4 years ago
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