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Montano1993 [528]
3 years ago
13

Please tell if my answer is right or wrong.

Chemistry
1 answer:
xxTIMURxx [149]3 years ago
5 0
Change the places of 'acts against the motion of an object' and 'causes an object to change speed or direction'
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What change in mass number occurs when a radioactive atom emits an alpha particle?
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The alpha particle is the helium nucleus.
The mass of helium nucleus (⁴₂He) is 4u.


The mass of radioactive atom decreases by 4u. Look at the reaction below:

²²³₈₈Ra ---> ⁴₂He + ²¹⁹₈₆Rn
6 0
3 years ago
Whats is a chemical change of a paper bag
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Combustion will cause a chemical change in paper.

This is because the carbon compounds are being oxidized into carbon dioxide and water vapour (or h2o, same thing).



3 0
3 years ago
Read 2 more answers
Choose all the answers that apply.
Stolb23 [73]

Answer:

the first statement

Explanation:

hope this helps

please like and Mark as brainliest

6 0
3 years ago
How is chemical bonding useful to our lives?
-BARSIC- [3]

Answer:

Three types of chemical bonds are important in human physiology, because they hold together substances that are used by the body for critical aspects of homeostasis, signaling, and energy production, to name just a few important processes. These are ionic bonds, covalent bonds, and hydrogen bonds.

Explanation:

3 0
3 years ago
What term describes a carbon atom that has four different groups bonded to it?
oee [108]
A carbon which is attached to four different atoms or group of atoms with different environment is called as Chiral Carbon or Asymmetric Carbon.

Non-<span>superimposable:
</span>                                     The mirror image (molecule) of chiral carbon cotaining compounds are Non.Superimposable on each other. They are called enantiomers of each other.

Polarized Light and Chiral Carbon:
                                                       When a polarized light is allowed to fall on either enantiomer of chiral compound, it is rotated other clockwise or anti-clockwise.

Examples:
                Below are three axamples of compounds containing chiral carbon.

8 0
3 years ago
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