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Brilliant_brown [7]
3 years ago
11

The products have more energy than the reactants..does that describe an exothermic reaction?

Chemistry
1 answer:
WARRIOR [948]3 years ago
4 0
Yes...yes it does describe an exothermic reaction
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Propane burns in oxygen to produce carbon dioxide and steam. The unbalanced equation for this reaction is: C3H8 + O2 → CO2 + H2O
NemiM [27]
Here is your answer

C3H8 + O2-----> CO2 + H2O

Balancing C atoms

C3H8 + O2------> 3CO2 + H2O

Balancing H atoms

C3H8 + O2------> 3CO2 + 4H2O

Balancing O atoms

C3H8 +\bold{5}O2-------> \bold{3}CO2 + \bold{4}H2O

Hence the equation is balanced.

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8 0
3 years ago
What are 10 facts about light?
Oksi-84 [34.3K]

Answer:

1. light is made up of energy

2. light travels in a straight line

3. the speed of light is exactly 299 792 km per second

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6. light can move super fast super slow and not at all

7. we can use light to weigh Stars

8. we can use light as tweezers

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10. lasers can make things cold

6 0
2 years ago
What do you think would happen if you had a very small amount of water in a glass and you
Ipatiy [6.2K]
If it was warn - hot water, i would say yes



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8 0
3 years ago
Help i don't know how to find the percentage yield in stoichiometry!
Harrizon [31]
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3 0
3 years ago
23. Using the periodic table, what is the oxidation number of:
Aloiza [94]

Answer:

a. +2

b. +3

c. -1

Explanation:

The typical oxidation states can be determined from the periodic table based on the number of valence electrons an atom has.

a. Calcium belongs to group 2A, meaning it has 2 valence electrons and, therefore, would have an oxidation state of +2 in compounds.

b. Aluminum is in group 3A, meaning it has 3 valence electrons and would have an oxidation state of +3 in compounds when the 3 electrons are lost.

c. Fluorine would become fluorine if it gained 1 additional electron to achieve an octet, so its oxidation state would be -1.

8 0
3 years ago
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