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satela [25.4K]
4 years ago
6

Dextrose 25% 1000 ml was ordered, you have only dextrose 70% solution available. how much of the dextrose 70% solution and steri

le water will you use to fill this order?
Chemistry
1 answer:
Varvara68 [4.7K]4 years ago
4 0
For the purpose we will use solution dilution equation:
c1xV1=c2xV2
Where, c1 - concentration of stock solution; V1 - a volume of stock solution needed to make the new solution; c2 - final concentration of new solution; V2 - final volume of new solution.
c1 = 70%
c2 = 25%
V1 = ?
V2 = 1000 mL
When we plug values into the equation, we get following:
70 x V1 = 25 x 1000
V1 = 333.33 mL
V(H2O)=V2-V1= 1000-333.33=666.67 mL

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Separating fluids, such as blood, is best accomplished using:
Vera_Pavlovna [14]

Centrifugation is usually use to separate different components of blood.

4 0
3 years ago
Drag the slider from January to December. Based on what you observe, do you think Barcelona has large temperature changes throug
Snowcat [4.5K]

Answer:

Yes.

Explanation:

Yes, I think that Barcelona has large temperature changes throughout the year because Barcelona has minimum temperature of 33°F in winter season and maximum temperature of 88°F in summer season. In Barcelona, the summers are short, warm, and humid while on the other hand, the winters in Barcelona are long, cold, and partly cloudy. The temperature typically varies from 40°F to 83°F and is rarely goes below 33°F or above 88°F.

8 0
3 years ago
An electron in an atom is known to be in a state with magnetic quantum number ml=−1
Ulleksa [173]

Explanation:

It is known that the maximum value of ml is equal to the vale of l. But the minimum value of n is as follows.

                    n = l + 1

where,     n = principle quantum number

                l = azimuthal quantum number

Values of n can be 1, 2, 3, 4 and so on. Whereas the values of l can be 0, 1, 2, 3, and so on.

Also, "m" is known as magnetic quantum number whose values can be equal to -l and +l.

So, when n = 1 then l = 0 and m = 0.

When n = 2 then l = 1 and values of m will be equal to -1, 0, +1. As it is given that the magnetic quantum number ml = -1. Hence, it is only possible when n = 2.

Thus, we can conclude that the smallest possible value of the principal quantum number n of the state is 2.

5 0
3 years ago
The ​density of lead is 11.342 g/cm​ 3​ .​ What would be the volume of a ​200.0 g sample of this metal?
Alisiya [41]

Answer:

The answer is

<h2>17.63 mL</h2>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

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

From the question

mass of lead = 200 g

density = 11.342 g/cm³

It's volume is

volume =  \frac{200}{11.342}  \\  = 17.6335743...

We have the final answer as

<h3>17.63 mL</h3>

Hope this helps you

8 0
3 years ago
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ZanzabumX [31]
C
Explanation- equals 459
3 0
3 years ago
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