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antiseptic1488 [7]
3 years ago
11

How many ml of 50 percent acid should be added to pure acid to make 70ml of 65 percent acid?

Chemistry
2 answers:
Oxana [17]3 years ago
8 0

Answer

Explanation:

thank u next thats the answer

alexandr1967 [171]3 years ago
6 0

Answer:

91 mL

Explanation:

In chemistry, to solve this kind of exercises, dilutions, and concentrations is common to use the following equation

                                              C1*V1=C2*V2

In which V1 refers to volume 1, in this case, is 70mL because is the quantity I have, the solution I can use to obtain another solution. C1 refers to the concentration of the solution I also have, in this case, 65%.

C2 and V2 refer to the volume and concentration of the solution I am looking for. So, if want to know V2, which is the volume I need to add, the only thing to do is find V2 in the equation:

                                               V2=C1*V1/C2

                                                V2= 65%*70mL/50%

                                                V2= 91mL

                                 

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Answer:

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Explanation:

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Yeast and other organisms can convert glucose (C6H12O6) to ethanol (CH3CH2OH) by a process called alchoholic fermentation. The n
NISA [10]

Answer:

8.37 grams

Explanation:

The balanced chemical equation is:

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From the ideal gas law we can determine the number of moles that the 2.25 L represent.

From there we will use the stoichiometry of the reaction to determine the moles of glucose which knowing the molar mass can be converted to mass.

PV = nRT    ⇒ n = PV/RT

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The molar mass of glucose is 180.16 g/mol, then the mass required is

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5 0
3 years ago
A sample of gas has a volume of 215 cm3 at 23.5 degrees Celsius and 84.6kPa what volume will the gas occupy at stp
miss Akunina [59]

The volume of the gas that occupy at STP is 165. 28 cm^3

calculation

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by making V2 the subject of the formula V2 =T2P1V1/P2T1

V2 = 273 K x 84.6 Kpa x 215 cm^3/ 101,.325 Kpa x296.5 K =165.28 cm^3

5 0
3 years ago
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