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Ede4ka [16]
3 years ago
12

A _ reaction occurs when a substance usually containing carbon reacts with oxygen to produce energy in the form of light and hea

t.
Chemistry
1 answer:
trapecia [35]3 years ago
3 0
A COMBUSTION reaction occur when a substance ...........................................
Combustion reaction is also known as burning. It occurs when an hydrocarbon react with oxygen to yield carbon dioxide, water and energy in the form of light and heat. Combustion reaction can not take place in the absence of oxygen.
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I neeeddddd heeeellllllppppp I'll give you brainliest
aev [14]

not double replacement

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3 0
3 years ago
PLZ I NEEEEEEEDDDDDD HELP
MrRa [10]

Answer:

2h+02=h20

Explanation:

2 in front of h on left side

2 in front of h on right side

3 0
3 years ago
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If you are asked to compare matter in solid, liquid, and gaseous states, which statement best defines a gas?
Elza [17]
I am pretty sure that <span>If I were asked to compare matter in solid, liquid, and gaseous states, the statement which would best defined a gas is </span>highest energy, highest molecular motion, and least dense packaging of molecules. I choose this one because it's not sensible to <span>heat CO2 (in case of safety) and in the last option the amount of energy is not satisfying.

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8 0
3 years ago
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Calculate the fraction of lattice sites that are schottky defects for cesium chloride at its melting temperature (645oc). assume
baherus [9]
Answer : 7.87 X 10^{-6}.

Explanation : To find the fraction of schottky defects in the given lattice of CsCl,

we use the formula, \frac{N_{s} }{N}} = exp ( \frac{-Q_{s}}{2KT} )

on solving with the given values ,Q_{s}= 1.86 eV and T as 645 + 273 K and rest are the constants.

\frac{N_{s} }{N}} = exp ( \frac{-1.86 eV}{2 X (8.62 X 10^{-5}) X (645 +273)} )

we get the answer as 7.87 X 10^{-6}.
6 0
3 years ago
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What is the balanced equation for CaCO3(s) &gt; CaO(s) + CO2(g
vlada-n [284]
Balanced equation :

1 CaCO3(s) = 1 CaO(s) + 1 CO2(g)

hope this helps!

3 0
3 years ago
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