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Nina [5.8K]
3 years ago
15

The concentration of potassium is higher in red blood cells than in the surrounding blood plasma. This higher concentration is m

aintained by the process of
Chemistry
1 answer:
lana [24]3 years ago
3 0

Answer:

active transport

Explanation:

Active transport -

It refers to the movement of the molecules from a region of lower concentration towards a region of higher concentration via a membrane , is referred to as active transport.

The process of active transport need to have some cellular energy .

Hence,

The concentration of potassium is maintained in the red blood cells via the process of active transport.

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A brick has a mass of 100 G and a volume of 25CM3 what is the density of the brick
kumpel [21]

Answer:

\boxed {\boxed {\sf 4 \ g/cm^3}}

Explanation:

We are asked to find the density of a brick. Density is a substance's mass per unit volume. The formula for calculating density is as follows.

\rho= \frac{m}{v}

The mass of the brick is 100 grams and the volume is 25 cubic centimeters.

  • m= 100 g
  • v= 25 cm³

Substitute the values into the formula.

\rho= \frac{ 100 \ g}{25 \ cm^3}

Divide.

\rho=4 \ g/cm^3

The density of the brick is <u>4 grams per cubic centimeter.</u>

5 0
3 years ago
How are elements<br> and compounds<br> different?
Nataliya [291]

Answer:

Elements only contain one type of atoms while compounds contain two or more types of atoms.

Explanation:

An example of an element is sodium --> Na (only Na atoms)

An example of a compound can be water --> H2O (contain H and O atoms)

*But the particles within a compound are all the same.

3 0
3 years ago
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The Ksp for BaCO3 is 5.1x10^-9. how many grams of BaCO3 will dissolve in 1000ml of water
Amanda [17]

Answer:

= 0.014 g of BaCO3

Explanation:

Let x = mol/L of BaCO3 that dissolve.  

This will give;

x mol/L Ba2+ and x mol/L CO32-  

But;

Ksp = 5.1x10^-9.

Therefore;

Ksp = 5.1 x 10^-9 = (x)(x)  

Thus;

x = molar solubility

  = √ (5.1 x 10^-9)

  = 7.1 x 10^-5 M  

Therefore;

Mass BaCO3 = 7.1 x 10^-5 M x 1 L x 197.34 g/mol

                      = 0.014 g

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3 years ago
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Iron age farm

Explanation:

edge 2020

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