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Scorpion4ik [409]
3 years ago
8

you need to prepare 250.0 mL of a 1.50 M HCl solution from a 2.00 M HCl stock solution. assuming that the accuracy of the concen

tration is important, which type of glassware should you use to make the solution
Chemistry
2 answers:
Savatey [412]3 years ago
7 0

Answer:

I should use a volumetric flask.

Explanation:

If the accuracy of the concentration is important, we need to use a volumetric flask.

IRISSAK [1]3 years ago
4 0

Answer:

The glassware appropriate for dilution preparation is a (250 mL)<em> volumetric flask</em>

Explanation:

We know that molarity or concentration of a solution is the number of moles per litres of solution,  the molarity and volume of the solution in question can be used to find out how much of the stock solution to be diluted using the formula;

c = \frac{n}{v}

Once the variables are confirmed, a 250 mL solution of 1.50M HCl can be prepared by measuring determined stock solute into a 250mL volumetric flask and the making it upto the 250mL mark. (a measuring cylinder can be used to check accuracy of volume added).

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If 54 g of Al reacted with 160 g of O2, find out the weight of product​
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Answer:

number of Al atom =54÷27=2atom of Al. number of o atom = 160÷16=10 atom of o . =214U MASS of ALO2.

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How many carbon atoms are there on the reactant side of this equation?
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Its obviously D like what are you stupid lol jk don’t take it to heart kid
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A ray in the emission spectrum has a wavelength of 3.10 x 1014 meters. Given that the speed of light is 2.998 x 108 m/s, what is
bulgar [2K]
<span>0.967 x 10^-6 HZ

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8 0
3 years ago
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How many milliliters of sterile water for injection should be added to a vial containing 5 mg/mL of a drug to prepare a solution
jonny [76]

Answer:

7mL of sterile water is the initial amount of the concentrated solution is 3mL

Explanation:

In this problem, the vial must be <em>diluted </em>from 5mg/mL to 1.5mg/mL, that means the solution must be diluted:

5mg/mL / 1.5mg/mL = 3.33 times

If the initial amount of the drug in the vial is 3mL, the final volume must be:

10mL

That means the volume of water that should be added is:

10mL - 3mL:

<h3>7mL of sterile water is the initial amount of the concentrated solution is 3mL</h3>
4 0
3 years ago
Unit 1- Unit Assessment (Matter &amp; Density)
konstantin123 [22]

Answer:

<h3>The answer is 11 g/mL</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question

mass = 3025 g

volume = 275 mL

We have

density =  \frac{3025}{275}  \\

We have the final answer as

<h3>11 g/mL</h3>

Hope this helps you

7 0
3 years ago
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