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likoan [24]
3 years ago
6

Reactions that affect the nucleus of an atom are called ?

Chemistry
1 answer:
densk [106]3 years ago
4 0
I believe the answer is C
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Where is energy stored in living sytems
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energy is stored in the chemical bonds in molecules

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50 Points for whoever does it and shows their work. Maya has four glasses of milk. The temperature and the amount of milk in eac
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A. 20 grams of milk at 10°C

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Since we refrigerate milk, it would be cooler than the room temperature, which standard norm is 25°C. So the milk has to be colder than the room temperature. Therefore, our answer is A.

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Answer:

Na the valency electrons is 1

The ion charge is positive 1

K the valency electrons is 1

The ion charge is positive 1

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Mg the valency electron is 2 The ion charge is positive 2

Ca the valency electron is 2 The ion charge is positive 2

Al the valency electron is 3 The ion charge is positive 3

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3 years ago
Which choice lists the correct order of the coefficients of each substance in the following neutralization reaction when the equ
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Calculate the heat change involved when 2.00 L of water is heated from 20.0/C to 99.7/C in
Pani-rosa [81]

Answer:

666,480 Joules or 669.48 kJ

Explanation:

We are given;

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but, density of water is 1 g/ml

  • Therefore, mass of water is 2000 g
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Required to determine the heat change

We know that ;

Heat change = Mass × Temperature change × specific heat

In this case;

Specific heat of water is 4.2 J/g°C

Temperature change is 79.7 °C

Therefore;

Heat change = 2000 g × 79.7 °C × 4.2 J/g°C

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Thus, the heat change involved is 666,480 Joules or 669.48 kJ

5 0
3 years ago
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