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dexar [7]
4 years ago
6

The atomic mass of an element most nearly reflects the elements total number of

Chemistry
2 answers:
Harman [31]4 years ago
4 0
The answer is A I hope
klemol [59]4 years ago
3 0

Answer:

it's a

Explanation:

<h3> the atomic mass is the number of protons and neutrons in an element added together</h3>

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During an exothermic reaction, heat content in the surroundings increases because
ANTONII [103]

Energy is transmitted to the surrounding in an exothermic reaction and this can be understood with the energy diagram of exothermic reaction attached with the answer.

<h3>What is an Exothermic Reaction ?</h3>

When a chemical reaction happens, energy is transferred to or from the surroundings.

When energy is transferred to the surroundings, this is called an exothermic reaction, and the temperature of the surroundings increases.

ΔH value negative –> energy released –> exothermic reaction

This happens because the reactants are at the higher energy state as compared to the products and therefore heat is liberated in the atmosphere to match the difference and therefore heat content in the surroundings increases.

The energy diagram for the exothermic reaction is attached with this answer.

To know more about exothermic reaction

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4 0
2 years ago
The answer and the work please​
Murljashka [212]

Answer:

for what?

Explanation:

8 0
3 years ago
Define photo electric effect​
scoray [572]

Photoelectric effect, phenomenon in which electrically charged particles are released from or within a material when it absorbs electromagnetic radiation.

mark me brainliestt :))

7 0
3 years ago
What is the total number of atoms in the molecule HNO3?​
melomori [17]

Answer:

We know that, composition of HNO3 is Hydrogen, Nitrogen and oxygen. Total number of atoms = 3+1+1=5 atoms are present in 1 molecule of HNO3.

5 0
3 years ago
A gas has a volume of 420 L at a temperature of -42.0 degrees celsius. What volume will the gas occupy at 18.0 degrees celsius?
Hoochie [10]

Formula

V/T = V1/T1

Givens

V = 430 L

T = - 42 °C = - 42 + 273 = 231°K

V1 = ??

T1 = 18°C + 273 = 291°K

The pressure is a constant.

Solution

420/231 = V1/291         Multiply by 291

420*291 / 231 = V1

V1 = 122220 / 231

V1 = 521.1 L  

6 0
4 years ago
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