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rjkz [21]
3 years ago
8

An atom that produces nuclear energy is sometimes called a

Chemistry
1 answer:
Airida [17]3 years ago
3 0
Nuclear fission i think it is.
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A single atom of an element has 21 neutrons, 20 electrons, and 20 protons. Which element is it?
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Answer:

Calcium

Explanation:

Clacium has atomic number 20. The atomic number. This means that it has 20 protons and 20 electrons. it has 21 neutrons.

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3 years ago
How are amplitude modulation and frequency modulation techniques similar?
Ivanshal [37]

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d

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Find the ratio of the volume divided by the
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3 0
3 years ago
I just started learning about kinetic molecular theory, and I’m not sure how to answer the question circled below
lions [1.4K]

Answer : The value of 'R' is 0.0821\text{ L atm }mol^{-1}K^{-1}

Solution : Given,

At STP conditions,

Pressure = 1 atm

Temperature = 273 K

Number of moles = 1 mole

Volume = 22.4 L

Formula used :     R=\frac{PV}{nT}

where,

R = Gas constant

P = pressure of gas

T = temperature of gas

V = volume of gas

n = number of moles of gas

Now put all the given values in this formula, we get the values of 'R'.

R=\frac{(1atm)\times (22.4L)}{(1mole)\times (273K)}

R=0.0821\text{ L atm }mol^{-1}K^{-1}

Therefore, the value of 'R' is 0.0821\text{ L atm }mol^{-1}K^{-1}.

7 0
3 years ago
Instructions:Select the correct answer.
lys-0071 [83]

Answer:-

Ca-Cl

Explanation:-

The more the difference in electronegativity more the polar bond.

In case of Ca-Cl the difference = 3.16 - 1= 2.16

It is more than all the other combinations given.

Hence Ca-Cl is the most polar covalent bond.

3 0
4 years ago
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