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Leni [432]
3 years ago
7

Gizmo Warm-up Like an unpopped kernel in the microwave, a radioactive atom can change at any time. Radioactive atoms change by e

mitting radiation in the form of tiny particles and/or energy. This process, called decay, causes the radioactive atom to change into a stable daughter atom. The Half-life Gizmo allows you to observe and measure the decay of a radioactive substance. Be sure the sound is turned on and click Play
Chemistry
1 answer:
r-ruslan [8.4K]3 years ago
6 0

Answer:

Fission reaction occurs.

Explanation:

When a radioactive atom undergoes a nuclear decay event, spontaneous fission reaction occurs, the decaying nucleus undergoes a transformation in  the change in the number of protons in the nucleus. The fission process produces gamma photons, and releases a very large amount of energy. After the radiation stops, a stable element is obtained whereas the energy is released in the surrounding.

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Suggest why sodium wasn’t produced until the early 19th century.
AlexFokin [52]

Answer:

The reason is that sodium attaches itself very strongly to other elements. Its compounds are very difficult to break apartand also because it is so reactive.

5 0
3 years ago
Note.... the colliding molecules must possess certain minimum energy (threshold energy)to make the collision effective n..the ad
Oliga [24]

Answer:

<h3>I think, answer is threshold energy.</h3>

OR

<h3>activation energy. </h3>

Explanation:

<h3>Hope it helps you....</h3>

<h2>Thank you..</h2>
4 0
3 years ago
How many moles of H2 are produced from 5.8 moles of NH3
vodomira [7]

Answer:

1. 8.7moles of H2

2. 2.25moles of O2

Explanation:

1. 2NH3 —> N2 + 3H2

From the equation,

2moles of NH3 produce 3 moles of H2.

Therefore, 5.8moles of NH3 will produce Xmol of H2 i.e

Xmol of H2 = (5.8x3)/2 = 8.7moles

2. C3H8 + 5O2 —> 3CO2 + 4H2O

From the equation,

5moles of O2 produced 4moles of H2O.

Therefore, Xmol of O2 will produce 1.8mol of H2O i.e

Xmol of O2 = (5x1.8)/4 = 2.25moles

4 0
4 years ago
Cl2 + AlBr3 → AlCl3 + Br2How many grams of Cl2 are needed to produce 19.03g of AlCl3?
VladimirAG [237]

Answer:

14.89 g

Explanation:

Please see the step-by-step solution in the picture attached below.

Hope this answer can help you. Have a nice day!

5 0
4 years ago
What is meant by 3p^3
labwork [276]
It means 3p (p being your variable) to the third power, or cubed
7 0
3 years ago
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