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AleksAgata [21]
3 years ago
13

HELP ASAP!!

Chemistry
2 answers:
Ksju [112]3 years ago
4 0
109/8.56=12.7
50+12.7
V=62.7

Mass= Volume x Density so i divided the mass and density to get the volume. and afterwards i would just add it to the mass to get my final answer

r-ruslan [8.4K]3 years ago
3 0

Answer:

The final volume reading in the graduated cylinder 62.7 ml.

Explanation:

Initial level of the water in graduated cylinder = 50 .0 ml

To calculate volume of a substance, we use the equation:

\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}

We are given:

Density of liquid = 8.56 g/mL

Mass of substance = 109 g

Putting values in above equation, we get:

8.56 g/mL=\frac{109 g}{\text{Volume of substance}}\\\\\text{Volume of substance}=12.7 mL

Volume occupied by the substance = 12.7 mL

Volume occupied by the substance will increase the volume of the water more by 12.7 ml.

The final volume reading in the graduated cylinder :

50 ml + 12.7 mL = 62.7 mL

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D-Glucose

Explanation:

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2 years ago
What characteristic must be true of a good hypothesis
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A hypotheses is a testable idea or explanation that leads to scientific investigation.
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Which of the following does not correctly describe Sn2 reactions of alkyl halides? A) The mechanism consists of a single step wi
Rashid [163]

Answer:

The correct answer is B the tertiary halides reacts faster than primary halides.

Explanation:

During SN2 reaction the nucleophile attack the alkyl halide from the opposite side resulting in the formation of transition state in which a bond is not completely broken or a new bond is not completely formed.

   After a certain period of time the nucleophile attach with the substrate by substituting the existing nuclophile.

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  So from that point of view the that statement tertiary halides reacts faster that secondary halide is not correct.

7 0
3 years ago
3 mL is equal to:<br> a.3 cm 2<br> b.3L<br> c.3 cm 3
NeTakaya

Answer:

C

Explanation:

1mL = 1cm

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Best of Luck!

8 0
3 years ago
What is the kinetic energy of a 25 kg object moving at a velocity of 2.5 m/s?
vovangra [49]

Answer:

<h2>78.13 J</h2>

Explanation:

The kinetic energy of an object can be found by using the formula

k =  \frac{1}{2} m {v}^{2}  \\

m is the mass

v is the velocity

From the question we have

k =  \frac{1}{2}  \times 25 \times  {2.5}^{2}  \\  = 12.5 \times 6.25 \\  = 78.125 \:  \:  \:  \:  \:  \:  \:  \:

We have the final answer as

<h3>78.13 J</h3>

Hope this helps you

6 0
3 years ago
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