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KonstantinChe [14]
2 years ago
12

What is true about radioactive isotopes of an atom?

Chemistry
2 answers:
jenyasd209 [6]2 years ago
6 0

Answer:

#2: They break down quicker than stable isotopes. - im not sure

Explanation:

stich3 [128]2 years ago
4 0
2 is the answer. They don’t break down
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What is the density of an objects with a volume of 4.3 mL and a mass of 8.32g
irga5000 [103]

Answer:

<h3>The answer is 1.93 g/mL</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}\\

From the question

mass = 8.32 g

volume = 4.3 mL

So we have

density =  \frac{8.32}{4.3}  \\  = 1.934883720...

We have the final answer as

<h3>1.93 g/mL</h3>

Hope this helps you

3 0
3 years ago
Find energy is the wavelength is 5.2x10^-7m (Show work)
RoseWind [281]

Answer:

E = 3.825×10⁻¹⁹ J

Explanation:

Wavelength of photon = 5.2 ×10⁻⁷m

Energy of photon = ?

Solution:

Formula:

E = hc/λ

h = plancks constant = 6.63×10⁻³⁴ Js

c = speed of wave = 3×10⁸ m/s

by putting values,

E = 6.63×10⁻³⁴ Js ×3×10⁸ m/s / 5.2 ×10⁻⁷m

E = 19.89×10⁻²⁶ J.m / 5.2 ×10⁻⁷m

E = 3.825×10⁻¹⁹ J

4 0
3 years ago
If an atom has 4 protons, 5 neutrons, and 4 electrons, what would its atomic mass be?
Rina8888 [55]

Answer:

4

Explanation:

If I remember correctly, the atomic # will always be the same as the # of electrons

8 0
2 years ago
Please help!
Grace [21]
The most common reaction that causes spoilage isn't a reaction at all. Molds and Bacteria are attracted to the easily found presence of water in the fruit. They find a natural place to reproduce and what they do causes spoilage.

Very few sources talk about the chemical changes that take place. If you put fruit in a refrigerator it slows the spoiling process down. That means that the chemical reaction has to be endothermic (it requires heat to occur)

The process of spoilage is speeded up by bananas for example, giving up Ethylene gas. You do not want to put a banana with tomatoes, because tomatoes are very sensitive to Ethylene. (It's OK to eat them together. They make a terrific salad. Yum).

I cannot find a definitive source that connects all this together, but the conduct of the fruit in refrigerators confirms what I am saying.

Spoilage is a very complex reaction and interaction with the environment. I have given you a hint of what happens but you should search it out to convince yourself of the outcome.
3 0
3 years ago
In a chemical process, three bottles of a standard fluid are emptied into a larger container. A study of the individual bottles
Setler79 [48]

Answer:

a

The expected value is = 39 units

The standard deviation is = 0.1212 unites

b

The probability is = 0.2047 units

Explanation:

The explanation of this answer is shown on the first uploaded image

5 0
3 years ago
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