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Soloha48 [4]
3 years ago
5

What happens in a double-replacement reaction?

Chemistry
2 answers:
DochEvi [55]3 years ago
7 0

Answer: D

Explanation: trust

vivado [14]3 years ago
6 0

Answer:

Explanation:

D

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A compound is 150.86 g carbon, 8.86 g hydrogen, and 20.10 g oxygen by
Ivahew [28]

Answer:

C20 H14 O2

Explanation:

Remark

This is a sample, which the question does not say and should. It is a fraction of 1 mole. So what you have to do is multiply the numbers given by x and equate it to 286.28

Equation

150,86* x + 8.86*x + 20.1*x  = 286.28

179.8x = 286.28

x = 286.26/179.8

x = 1.592

Now multiply the given numbers by 1.592

150.86 * 1.592 = 240.58

8.85 * 1.592 = 14.1

20.1 * 1.592 = 32

Rounding you get

240/12 = 20

14.1/1 = 14

32/16 = 2

C20 H14 O2

8 0
3 years ago
Can anyone help me with this? The picture may or may not show up on your screen and if not I can probably type it out
3241004551 [841]
Because H2O has 2 H and 1O and 1 H is already in the equation, the answer should contain 1H and 1O, meaning it's either H O- or OH- however the proper way to write it is OH
An easy was to remember is by writing H2O down as HOH and when you split it up it becomes H+ + OH-
6 0
3 years ago
Please comment if you are sure about your answer . Thank you
ryzh [129]
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4 years ago
At which electrode does oxidation occur in a
Trava [24]
The right answer for the question that is being asked and shown above is that: "(2) the cathode in a voltaic cell and the anode in an electrolytic cell." At the status of electrode does oxidation occur in a voltaic cell and in an electrolytic cell is that the cathode in a voltaic cell and the anode in <span>an electrolytic cell</span>
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4 years ago
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Which is the more preferred fuel: one with a higher energy density or one with a lower energy density
Nana76 [90]

The higher the energy density of a fuel, the greater the amount of energy it has stored.

<h3>What is the energy density?</h3>

The energy density of a fuel is defined as the amount of energy it possesses per unit volume or per unit weight.

<h3>Characteristics of the energy density</h3>

  • It is the amount of energy accumulated in an energy vector per unit volume or mass.

  • In general, higher density energy sources and carriers are preferable, as many end uses require concentration of such energy.

  • The packaging of energy in liquid hydrocarbons is the one with the highest energy density, that is, the highest energy per volume unit, hence its high use in the transportation sector.

Therefore, we can conclude that in general, fuels, especially low molecular weight fuels, have high energy densities.

Learn more about the energy density here: brainly.com/question/2165966

5 0
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