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lana66690 [7]
3 years ago
13

What is the answer to this because I'm clueless?

Chemistry
1 answer:
SVEN [57.7K]3 years ago
6 0
The answer to what  because i dont know
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Help with this chemistry question please???
givi [52]
To find percent composition, you should first find the total of all of the components. Just add them all together:

100g+200g+50g=350g

Then, divide the amount of the component you are interested in, in this case, chocolate (50g), by the total amount to give:

\frac{50g}{350g}

This will give you the answer in decimal form, but to convert to a percent, you need to multiply by 100:

\frac{50g}{350g}*100

Therefore, the answer choice that is correct is A.
6 0
3 years ago
(a) Write the reaction for the overall oxidation of propane (C3H8) with oxygen to produce CO2 and water.
Pavlova-9 [17]

Answer:

Oxidation is the loss of electrons, that is, addition of electronegetive elements, example is addition of oxygen. Also, removal of electropositive elements, example is removal of hydrogen.

Explanation: a) In the presence of excess oxygen, propane burns in air, which gives the following chemical equation:

C3H8 + 5O2⇒ 3CO2 + 4H2O +Heat

b) When insufficient oxygen or too much oxygen is present for complete combustion, the following equation is given:

2C3H8 + 9O2 ⇒ 4CO2 + 2CO + 8H2O + Heat

c) At the anode( negative terminal): O∧2- ⇒ O + e

Oxygen accepts electron.

d) At cathode ( positive terminal): H∧+ + e∧- ⇒ H

Hydrogen donates electron

d) Nernst equation for reversal potential is given as follows:

E= RT/zF  In{ion outside cell}/{ion inside cell}= 2.303 RT/zF In{ion outside cell}/{ion inside cell}

4 0
3 years ago
Caila designs a model to test how the use of different combinations of energy resources would affect global temperatures. Which
Igoryamba
Solar and hydroelectric (just took test)
6 0
3 years ago
Read 2 more answers
Increasing the amount of water in which the sugar is dissolved will increase the frequency of collisions between the sucrose mol
Sonja [21]

Answer: The given statement is true.

Explanation:

When we increase the amount of solvent which is water in this case then it means there will occur an increase in the molecules. Hence, there will be more number of collisions to take place with increase in number of molecules.

Therefore, more is the amount of interaction taking place between the molecules of a solution more will be its rate of hydrolysis.

Thus, we can conclude that the statement increasing the amount of water in which the sugar is dissolved will increase the frequency of collisions between the sucrose molecules and the water molecules resulting in an increase in the rate of hydrolysis, is true.

8 0
3 years ago
Which of the following molecules are ionic?
kkurt [141]
1st one is E
2nd one is also E
6 0
3 years ago
Read 2 more answers
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