Answer:
The same number of electrons and protons.
Explanation:
Because a proton has a charge of +1 and an electron has a charge of -1, the ratio of protons to electrons must be 1:1 for the atom to be neutral.
Answer:
rate=k×[C5H8]^n
k is the rate const.
when the rate is calculated using a few of the above data, (rate=change in concentration/time period) it can be observed that the rate is constant
therefore order of the reaction is 0
<span>Petroleum is found in sedimentary rock.
</span><span>Petroleum was once living organisms, which were compressed due to high pressure.
</span><span>Petroleum is used to make plastics.
Petroleum is used to make petrochemicals.
It is a yellow-black liquid compound found in various geologic sites and used in numerous products, and as a fuel. </span>
A. time/mass b. number/time c. energy/time d. time/energy
Answer:
3,4,5,6,7,8
Explanation:
Groups 13 - 18 are the main group on the periodic table
The group number corresponds the number of valence electrons they contains.
Valence electrons are the number of electrons in the outermost shell of an atom.
So group 13 - 18 corresponds to a valency of 3,4,5,6,7,8.
Groups with a valency of 8 are the noble gases.