13
The parent atom,
Z
=
13
, necessarily has 13 electrons.....
Explanation:
And thus the trivalent ion has 10 electrons.....to give the tripositive charge.
Answer:
In 2CaCO3 there is 3 elements.
In C8H10N402 there is 3 elements.
Answer:
a chemical change is when the substance turns into a new substance and can not be changed back into its original form
Explanation:
Answer:
Matter can be broken down into two categories: pure substances and mixtures. Pure substances are further broken down into elements and compounds. Mixtures are physically combined structures that can be separated into their original components. A chemical substance is composed of one type of atom or molecule.
Hope this helps :)
<em>mC₃H₈: 44 g/mol</em>
<em>mCO₂: 44 g/mol</em>
---------------------
C₃H₈ + 5O₂ ----> 3CO₂ + 4H₂O
44g (44·3)g
44g C₃H₈ ------ 132g CO₂
15g C₃H₈ ------ X
X = (15×132)/44
<u>X = 45g CO₂
</u>
_____
:)