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stealth61 [152]
3 years ago
6

Does anybody no this please this is hard i need help

Chemistry
2 answers:
Fed [463]3 years ago
8 0

Ur answer should be B

tatiyna3 years ago
8 0
The second answer of 2 is correct.
This is because you need to balance on both sides equal numbers of hydrogen and oxygen.
So 2H2+O2 must get you 2H2O.
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If you dilute 19.0 mL of the stock solution to a final volume of 0.310 L , what will be the concentration of the diluted solutio
Dahasolnce [82]

Answer:

M_2=0.613M_1

Explanation:

M_1 = Concentration of stock solution

M_2 = Concentration of solution

V_1 = Volume of stock solution = 19 mL

V_2 = Volume of solution = 0.31 L= 310 mL

We have the relation

M_1V_1=M_2V_2\\\Rightarrow M_2=\dfrac{M_1V_1}{V_2}\\\Rightarrow M_2=\dfrac{M_119}{310}\\\Rightarrow M_2=M_1\times\dfrac{19}{310}\\\Rightarrow M_2=0.613M_1

\boldsymbol{\therefore M_2=0.613M_1}

The concentration of the diluted solution will be 0.613 times the concentration of the stock solution.

6 0
3 years ago
Which scientific law states the relationship between an object's mass, acceleration, and amount of force acting on it? *
jenyasd209 [6]
Newton's second law of motion
5 0
3 years ago
What happens to a glass of water as the average molecular kinetic energy of the water molecules increases?
trasher [3.6K]
"The water becomes warmer."
<u>Remember</u>: Kinetic energy means how much, on average, a molecule is moving around. This is directly translated into heat. Therefore, the higher the kinetic energy, the more heat produced.
4 0
3 years ago
Read 2 more answers
Two basic properties of the gas phase are
Molodets [167]
The choices can be found elsewhere and as follows:

A.) a definite shape and a definite volume
B.) a definite shape but no definite volume
C.) no definite shape and no definite volume

I believe the correct answer is option C. Two basic properties of the gas phase would be it has no definite shape and no definite volume. It takes the shape and volume of its container. Hope this answers the question.
6 0
3 years ago
Read 2 more answers
Citric acid (H3 C6 H5 O7) is a product of the fermentation of sucrose (C12 H22 O11) in air.
stiks02 [169]

Answer:

960.6175

Explanation:

The balanced equation shows that for every mole of sucrose used, 2 moles of  citric acid are produced.

So 2.5 moles of C12H22O11 will produce 2*2.5 moles of Citric acid.

So 2.5 moles of C23H22O11 will produce 5 moles of Citric Acid.

The next step is to figure out the molar mass of Citric Acid.

There are

Hydrogen: H3 + H5 moles of hydrogen in 1 mole of Citric Acid = 8 mol H

Carbon: 1 mol of Citric Acid has 6 moles of Carbon in it             = 6 mol C

Oxygen: 1 mol of Citric Acid has 7 moles of Oxygen it it              =7 mol O

Hydrogen has  a mass of 1  so Citric Acid has 1 * 8 grams H          8

Carbon has a mass of 12 so Citric Acid has 12 * 6 grams C           72

Oxygen has a mass of 16 so Citric Acid has <u>16 * 7 grams O          112</u>

Total grams for 1 mol Citric Acid                                                     192    

The official published mass of Citric Acid is 192.1235 so because I used rounded numbers I'm a little off. It is important for any chemistry student student to know  where the 192.1235 came from rather than exactly why I'm a little out. Every periodic table lists different masses for each element. If you want a better number, you will have to consult your own periodic table.

1 mol of Citric Acid = 192 grams

5 mols of Citric Acid = x

Cross multiply

1 * x = 5 * 192

x = 960 grams.

If you want to use the published amount then the answer will be 5 * 192.1235 = 960.6175

       

8 0
3 years ago
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