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worty [1.4K]
3 years ago
10

Which statement describes the difference between chemical reactions and nuclear decay

Chemistry
2 answers:
gogolik [260]3 years ago
4 0

Chemical reactions can result in new compounds, while nuclear reactions can result in new elements.


dezoksy [38]3 years ago
3 0
Chemical reactions might be fast -- burning gasoline, or slow -- rusting. Usually the require two or more reactants. Most of these, along with requiring more than 1 substance, also requires something to get it started ... burning needs a spark to start it.
Nuclear decay only requires 1 thing, the radioactive element. Wait and it spontaneously undergoes decay.
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what do the colors produced by fireworks indicate? a. a physical change c. a state change b. a chemical change d. an element cha
Nat2105 [25]
B. A chemical change 
6 0
3 years ago
If there is currently 50kg of U-235 present in Oklo, how much must have been present 750 million years ago when the reaction too
Viefleur [7K]
To answer this question, you need to know the concept of half-life, which is how a radioactive material decreases in mass over time.

The half life of U-235 is 703.8 million years. The first part of this problem is to find the scale factor. To do this, divide the time that has past by the half life, like this:

\frac{750}{703.8}  = 1.066
Now, take this scale factor and multiply it by the current mass, like this:

50 \times 1.066 = 53.3
This number is what you add to the current mass to get the original mass. That is because the scale factor showed us that it was just over one half life. Since after one half life, the mass is cut in half, and this is over one half life, when we add to the original it will be a little over double. This equation illustrates the final addition:

50 + 53.3 = 103.3
I hope this helped you. Fell free to ask any further questions.
7 0
3 years ago
What is the term for the concentration expression that relates the moles of solute dissolved in each liter of solution?
OverLord2011 [107]

Answer: -

Molarity is the term for the concentration expression that relates the moles of solute dissolved in each liter of solution.

Explanation: -

Molarity is defined as number of moles of solute dissolved per litre of the solution.

Molarity symbol is M.

1 M = 1 mol / L

Thus molarity is the term for the concentration expression that relates the moles of solute dissolved in each liter of solution

3 0
3 years ago
Water is amphoteric. If it reacts with a compound that is a stronger acid than itself, water acts as a
kirza4 [7]

Answer:

Water acts as a base in the presence of a strong acid

Explanation:

Water,being an amphoteric compound, can act both as an acid and as a base.

In the presence of an acid , water acts as a base but in the presence of a base, water acts as an acid.

5 0
3 years ago
How to check atomic mass?​
slavikrds [6]

Answer:

There are multiple ways to check mass but I'll tell you one. Look below

Explanation:

One easy way of checking atomic mass is by adding protons and neutrons.

For example:

We have 5 protons and 4 neutrons.

5+4=9

I hope this helps (:

8 0
3 years ago
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