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Musya8 [376]
3 years ago
15

Write a nuclear equation for each description below.

Chemistry
1 answer:
ValentinkaMS [17]3 years ago
7 0

Answer:

Sr-84 + He-2  -> Na-25 + Pm-61

Explanation:

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How did Thompson know that the atom was made of more than just electron?
Korvikt [17]

Because of the research already gathered from scientists before him foe which he compared data with to build his own model

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3 years ago
A balance was tested against a standard calibration mass with a certified value of 200.002 g and produced the following readings
wlad13 [49]

Answer:

Precise but not accurate.

Explanation:

We can tell the performance of the balance is precise, because the repeated measurements give values close to one another.

However, the performance of the balance is not accurate, as the mean value of the repeated measurements (195.587) is not close to the value considered as true (in this case the standard calibration mass with a certified value of 200.002 g).

7 0
3 years ago
HELP! What property is not used to separate a mixture ?
andre [41]
I believe it’s conductivity
7 0
4 years ago
Read 2 more answers
Which statement about subatomic particles is true?
Lera25 [3.4K]

Answer:

C

Explanation:

6 0
3 years ago
A
meriva

Answer:

Option B is correct. A nuclear alpha decay

Explanation:

Step 1

This equation is a nuclear reaction. So it can be an alpha decay or a beta decay

An α-particle is a helium nucleus. It contains 2 protons and 2 neutrons, for a mass number of 4.

During α-decay, an atomic nucleus emits an alpha particle. It transforms (or decays) into an atom with an atomic number 2 less and a mass number 4 less.

Thus, radium-226 decays through α-particle emission to form radon-222 according to the equation that is showed.

A Beta decay occurs when, in a nucleus with too many protons or too many neutrons, one of the protons or neutrons is transformed into the other.

Option B is correct. A nuclear alpha decay

6 0
3 years ago
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