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Mariulka [41]
3 years ago
10

Liquid water freezes into ice,it looks different. why is this not a chemical change

Chemistry
1 answer:
Oksi-84 [34.3K]3 years ago
7 0
<span>Freezing of water is a physical change because all you are doing is changing the physical state of the water from a liquid to a solid. when freezing occurs you have not altered the water chemically. you still have water except its in the solid form.</span>
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2 C6H14 + 19 O2 --&gt; 12 CO2 + 14 H2O
vivado [14]

Answer:

1.27 moles (3 s.f.)

Explanation:

Mole ratio of water: C6H14

= 14:2

= 7:1

This means that to produce 7 moles of water, 1 mole of C6H14 is needed. Or 1/7 mole of C6H14 is needed to produce 1 mole of water. So if you need 8.86 moles of water, 8.86(1/7) moles of C6H14 is needed.

For 8.86mol of water, moles of C6H14 needed

= 8.86/7

= 1.27 moles (3 s.f.)

4 0
4 years ago
Oceanic crust is
Ratling [72]

Answer:

It is thinner than the continental crust.

Explanation:

4 0
3 years ago
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The cheetah has been clocked at 112 km/Hr. What speed would this be in ft/sec?
zhannawk [14.2K]
All you have to do in convert two units. You need to know that there are 3600 seconds in an hour, and one kilometer is ~3,280.8399 feet. 3,280.8399 * 112 is equal to 367454.0688 feet per hour. Now divide it by 3600 to get it into seconds. That is equal to 102.07057466666667 feet per second. That's your answer.
6 0
4 years ago
CH2 - CH2 - CH3<br> |<br> CH3 - CH2 - CH - CH2 - CH = CH2
lianna [129]
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The prefix none is because it has 9 carbon.

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6 0
4 years ago
Please help!
Len [333]
It will slowly rotten and turn brown
7 0
4 years ago
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