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Roman55 [17]
3 years ago
7

An atom has 25 protons 30 neutrons and 25 electrons what is the charge of the atom nucleus

Physics
1 answer:
Alex17521 [72]3 years ago
3 0
The nucleus is always positive since thats where the protons are located and the neutrons have no charge....
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According to Einsteins explanation, what causes gravitation?
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4 years ago
Gold has a specific heat of 0.130 J/g*C. If 195 joules of heat are added to 15 grams of gold how much does the temperature of th
Anna71 [15]

The correct answer to the question is :  100\ ^0C

EXPLANATION :

As per the question, the specific heat of gold is given as c = 0.130\ J/g^0C

The heat given to the gold dQ = 195 J

The mass of the gold is given as m = 15 gram.

We are asked to calculate the change in temperature.

Let the change in temperature is dT.

We know that dQ = mcdT

                      dT=\ \frac{dQ}{mc}

                             =\ \frac{195}{15\times 0.130}

                             =\ 100\ ^0C                   [ANS]

Hence, the change in temperature is 100 degree celsius.

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4 years ago
What is evaporation? Condensation? Drag the terms on the left to the appropriate blanks on the right to complete the sentences.
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Answer:

Evaporation is the physical change in which a substance converts from its <u>liquid</u> state to its <u>gaseous</u> state. Condensation is the physical change in which a substance converts from its <u>gaseous</u> state to its <u>liquid</u> state.

Explanation:

Evaporation and condensation are opposite processes to each other. Evaporation changes a liquid to a gas and condensation is the reverse.

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Both independent and dependent clauses
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