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gizmo_the_mogwai [7]
3 years ago
6

If a drop of blood is 0.05 mL, how many drops of blood are in a blood collection tube that holds 2 mL ?

Chemistry
2 answers:
soldi70 [24.7K]3 years ago
7 0
Just divide the two (2 / 0.05) and you will get your answer; there are 40 drops of bloodin the collection tube.
Drupady [299]3 years ago
7 0

Answer : The number of drops of blood in a blood collect in tube are, 40.

Explanation :

As we are given that:

Volume of a drop of blood = 0.05 mL

Volume of blood collection tube that holds = 2 mL

Now we have to calculate the number of drops of blood collect in tube.

\text{Number of drops of blood}=\frac{\text{Volume of blood collect in a tube}}{\text{Volume of a drop of blood}}

Now put all the given values in this expression, we get:

\text{Number of drops of blood}=\frac{2mL}{0.05mL}=40

Therefore, the number of drops of blood in a blood collect in tube are, 40.

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8 0
3 years ago
Calculate the molarity of the two solutions. The first solution contains 0.550 mol of NaOH in 1.40 L of solution.
olya-2409 [2.1K]

Answer:

0.393 mol/L.

Explanation:

The following data were obtained from the question:

Number of mole of NaOH = 0.550 mol

Volume of solution = 1.40 L

Molarity of NaOH =.?

Molarity of a solution is simply defined as the mole of solute per unit litre of the solution. Mathematically, it is expressed as:

Molarity = mole /Volume

With the above formula, we can obtain the molarity of the NaOH solution as follow:

Number of mole of NaOH = 0.550 mol

Volume of solution = 1.40 L

Molarity of NaOH =.?

Molarity = mole / Volume

Molarity of NaOH = 0.55 / 1.4

Molarity of NaOH = 0.393 mol/L

Thus, the molarity of the NaOH solution is 0.393 mol/L.

6 0
3 years ago
What mass of boron sulfide must be processed with 2.1 x 10 4g of carbon to yield 3.11 x 10 4 g of boron and 1.47 x 10 5 g of car
Basile [38]

The reaction between boron sulfide and carbon is given as:

2B2S3 + 3C → 4B + 3CS2

As per the law of conservation of mass, for any chemical reaction the total mass of reactants must be equal to the total mass of the products.

Given data:

Mass of C = 2.1 * 10^ 4 g

Mass of B = 3.11*10^4 g

Mass of CS2 = 1.47*10^5

Mass of B2S3 = ?

Now based on the law of conservation of mass:

Mass of B2S3 + mass C = mass of B + mass of CS2

Mass of B2S3 + 2.1 * 10^ 4 = 3.11*10^4 + 1.47*10^5

Mass of B2S3 = 15.7 * 10^4 g


4 0
3 years ago
How do we get energy from the food we eat?
expeople1 [14]

Answer:

A

Explanation:

I used my resources and they was explaining and I came to a resolution that it was A

5 0
3 years ago
What occurs when Cr^3+ ions are reduced to Cr^2+ ions?
DiKsa [7]
D:

When electrons are gained, the charge of the atom decreases.

When you are given an atom with a charge, the oxidation of that atom is the charge. So by going from a Cr^3+ (Oxidation Number = 3) to a Cr^2+ (Oxidation Number = 2), the Oxidation Number thus decreases.
7 0
3 years ago
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