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notka56 [123]
3 years ago
9

Because ________ change the identity of the substances involved, they are hard to reverse

Chemistry
1 answer:
sveta [45]3 years ago
4 0
Chemical is the answer to the question, but nuclear could also be a valid one since it is nearly impossible to reverse that.
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Which characteristic of money explains why an old dollar is worth as much as a crisp, new dollar?
raketka [301]

The characteristic is uniformity.

<h3>Uniformity of money</h3>

Money is said to be uniform because irrespective of the nature it exists, the same amount must have the same purchasing power.

For example, a dollar in paper form and a dollar in coin form must be able to buy the same 1 dollar worth of goods.

Thus, a dollar bill, irrespective of its age, has the same purchasing power as a new, crisp dollar bill.

More on uniformity of money can be found here: brainly.com/question/17039370

#SPJ1

5 0
2 years ago
Can someone pls summarise this for me cbb ILL BRAINLIST U!!:)
Novosadov [1.4K]
Electrons in an atom are found on different electron shells depending on how much energy they possess, and they determine how atoms will interact with each other. The outermost electron shell holds the valance electrons.
7 0
2 years ago
How many moles are in NaOH?
CaHeK987 [17]

1 mole consist of 6.022 ×10 ²³

Therefore in NaOH = 6.022 ×10 ²³ moles of NaOH

6 0
3 years ago
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What is the percent change when an iodine atom (I) becomes an ion (I-)?
VashaNatasha [74]
What do you mean by this question?
4 0
2 years ago
Describe the chemical calcium-oxide.
timama [110]

Answer:

Explanation:

Mallabone’s tests suggest there’s no risk the jacket liner will explode or heat up so much that it risks causing burns. The reaction also doesn’t produce acidic byproducts. And because calcium oxide doesn’t react with humidity (water vapor in the air), the liners can be stored for long periods and still work when needed.

Calcium oxide: A substance that gives off heat as it chemically reacts with water. Its chemical formula is CaO (which means each molecule is made up of one calcium atom and one oxygen atom).

Exothermic reaction: A chemical reaction that generates heat as it proceeds. (In Greek, “exo” means outside and “therm” means heat.)

Thought this might help ;)

5 0
2 years ago
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