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3 years ago

Draw a sketch of a cross section of a graduated cylinder illustrating the proper method for reading the volume

Chemistry

1 answer:

vekshin13 years ago

6 0

Answer:

in reading volume - you read from the bottom of the meniscus, which is the curve formed from the liquid in the graduated cylinder. Most graduated cylinders are in ml, so measure in the most accurate reading.

Explanation:

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3 years ago

What is the correct name for SO3?

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3 years ago

What is the relationship between mass and gravity

Tpy6a [65]

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Explanation:

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3 years ago

Ou have a 5 ml sample of a protein in 0.5 m nacl. you place the protein/salt sample inside dialysis tubing (see fig. 2-14) and p

Oduvanchick [21]

Answer:

Procedure (2)

Explanation:

Assume the dialyses come to equilibrium in the allotted times.

Procedure (1)

If you are dialyzing 5 mL of sample against 4 L of water, the concentration of NaCl will be decreased by a factor of

$\dfrac{5}{4000} = \dfrac{1}{800}$

Procedure (2)

For the first dialysis, the factor is

$\dfrac{5}{1000} = \dfrac{1}{200}$

After a second dialysis, the original concentration of NaCl will be reduced by a factor of

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Procedure (2) is more efficient by a factor of

$\dfrac{40000}{800} = \mathbf{50}$

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3 years ago

In the combustion of hydrogen gas, hydrogen reacts with oxygen from the air to form water vapor.

Yuliya22 [10]

The balanced chemical equation is:

2H2 + O2 ---> 2H2O

We are given the amount of the product produced from the reaction. This will be the starting point for the calculations.

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6 0

3 years ago