2 years ago

The part of an atom where nearly whole mass is concentrated is called

1 answer:

3 0

Answer:

.....is called nucleus which have a positive charge the positive charge in the nucleus is balanced by the negative electrons making an atom neutral

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A solution has a hydrogen ion concentration of 0.001 M, what is the pH of the solution

LenKa [72]

PH= −log
10

[H
+
]
= −log
10

(0.001)
= −log
10

(10
−3
)
= −(−3)log
10

10
pH=3.
01

4 0

2 years ago

A compound contains nitrogen and a metal. This compound goes through a combustion reaction such that compound X is produced from

tia_tia [17]

Answer:

The correct answer is: X is nitrogen dioxide, and Y is a metal oxide

Explanation:

Combustion of compound of containing nitrogen and metal will give nitrogen dioxide and metal oxide as product. During combustion reaction a compound reacts with oxygen in order to yield oxides of elements present in the compound.

The general equation is given as:

$4M_3N_x+7xO_2\rightarrow 4xNO_2+6M_2O_x$

Hence, the correct answer is :X is nitrogen dioxide, and Y is a metal oxide.

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3 years ago

Which element has higher ionization energy? chlorine or carbon

PtichkaEL [24]

Answer:

chlorine has higher ionization than carbon

Explanation:

Chlorine is only one row below carbon, but it is three columns to the right in this case the IP of chlorine would be predicted to be greater than the IP of carbon.

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3 years ago

A cube of salt is crushed before being stirred into water.

andrew-mc [135]

Physical change

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3 years ago

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How would the amount of force needed to keep the kite in the air change if it were made out of a heavier material instead of a l

erik [133]

A: the amount of force would need to be greater.

5 0

3 years ago

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