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zloy xaker [14]
3 years ago
10

Science begins with an observation, true or false?

Chemistry
1 answer:
zzz [600]3 years ago
3 0

Answer:

I think that might be true ?

Explanation:

since in science you have to observe its see anything happen

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Part A Which of the following statements about chemical formulas is FALSE? Which of the following statements about chemical form
statuscvo [17]

Answer: Option (a) is the correct answer.

Explanation:

Subscript present in chemical formula of a compound represents the number of atoms of the element actually present in it.  

For example, in C_{7}H_{7}NO_{2} the subscripts present in it are 7, 7, 1, and 2.

A subscript is not responsible for determining the relative mass of each type of an atom because a subscript simply represents the number of atoms of each type of an element participating or combining with other atoms of a compound.

Thus, we can conclude that the statement subscripts represent the relative mass of each type of atom in the compound, is false.

8 0
4 years ago
2) Which element is used as fuel in nuclear reactors? How many years before we run out of it?
Firlakuza [10]

Answer:Uranium

80 years

To make that nuclear reaction that makes that heat, those uranium pellets are the fuel. And just like any fuel, it gets used up eventually. Your 12-foot-long fuel rod full of those uranium pellet, lasts about six years in a reactor, until the fission process uses that uranium fuel up.

Transuranic wastes, sometimes called TRU, account for most of the radioactive hazard remaining in high-level waste after 1,000 years. Radioactive isotopes eventually decay, or disintegrate, to harmless materials. Some isotopes decay in hours or even minutes, but others decay very slowly.

Explanation:

Hope this helps

5 0
3 years ago
* Who can help with this lol *
Viktor [21]

Answer: subduction and sea floor spreading

Explanation:

He knew that the continents today were once joined together by fossil records of plants and animals that were found to be on continents far removed from each other. He knew this also by corresponding land forms that matches up as well. What he couldn’t prove is how the land masses would have moved so far away from each other. Subduction and sea floor spreading move the tectonic plates that the continents sit on. That’s what he was missing.

5 0
3 years ago
If the quantity of reactants used in a chemical reaction increase, then the quantity of the products produced will also be incre
oksian1 [2.3K]

Answer:

the amount of reactants is always directly proportional to the product

Explanation:

4 0
4 years ago
Help science worth 50 points
monitta

Answer:

I think this is like a game in which you need dice.

Explanation:

To fill out the second page, you need to complete the roll/go-to chart.

8 0
4 years ago
Read 2 more answers
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