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Anastaziya [24]
3 years ago
13

If z=4.0 and y= 7.2 what is the value of X? Z=y/x

Chemistry
1 answer:
mr Goodwill [35]3 years ago
8 0
7.2/4.0=1.8 then, 4.0=7.2/1.8
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3 A specific amount of energy is emitted when excited electrons in an atom in a sample of an element return to the ground state.
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When a specific amount of energy is emitted when excited electrons in an atom in a sample of an element return to the ground state, this emitted energy can
<span>be used to determine the "identity of the element".</span>
5 0
3 years ago
Select 2-possible ointment bases. Select one or more:
fredd [130]

Answer:

The correct option is: c. petroleum jelly, d. Polyethylene glycol 4000/600 mixture                

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7 0
3 years ago
You find apiece of limestone on ahike. what substances are likely to have formed that rock?
enyata [817]

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7 0
3 years ago
HELP ASAP!!
Harman [31]
I would think it is a heterogeneous mixture since it can't be an element since there are more than one type of atom, it can't be a compound since the leaves are not bonded together, and it can not be a homogeneous mixture since the leaves don't all blended together (the pile is not uniform) and you can distinguish all the different parts of the mixture.  It can be considered a heterogeneous mixture since the leaves are mixed together (along with other things like dirt) in a non-uniform way so that you can point out the parts of the mixture and it does not look like one thing.

I hope this helps.  Let me know in the comments if anything is unclear.
4 0
3 years ago
If 1.38×1022 atoms of element y have a mass of 1.50 g, what is the identity of y? express your answer as a chemical symbol.
zaharov [31]
1,38×10²² = 0,138×10²³

0,138×10²³ ----- 1,5g
6,02×10²³ ------ X
X = (1.5×6,02×10²³)/0,138×10²³
X = 65,435 g/mol

It's ZINC (Zn)

:•)
4 0
3 years ago
Read 2 more answers
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