The concentration of the appetite-regulating hormone #1.3 times 10^-10# #M# in a fasting person. How many molecules of ghrelin are in 1 L of blood?

Answer 1

Approximately #7.8*10^13# ghrelin molecules are present in a fasting person's blood.

#M# is molarity, units of molarity are #(mol_(solute))/(L_(sol n))#.

Thus there are #1.3*10^-10mol# per liter of blood.

Furthermore, using Avogadro's number, we'll arrive at the solution:

#1.3*10^-10mol* (6.023*10^23 " molecules")/(mol) approx 7.8*10^13" molecules"#

Ghrelin is a protein that functions as a hormone:

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Answer 2

To calculate the number of molecules of ghrelin in 1 L of blood, you would first convert the concentration from molarity (M) to molecules per liter. Then, you would use Avogadro's number to convert from moles to molecules.

Concentration of ghrelin in fasting person: 1.3 x 10^-10 M

1 L of blood contains 1 L x 1000 mL/L x 10^3 μL/mL = 10^6 μL of blood

Now, calculate the number of molecules:

(1.3 x 10^-10 M) x (10^6 μL) x (6.022 x 10^23 molecules/mol) = 7.8536 x 10^15 molecules of ghrelin in 1 L of blood

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Answer 3

To calculate the number of molecules of ghrelin in 1 L of blood, you can use Avogadro's constant, which is approximately (6.022 \times 10^{23}) molecules/mol. First, convert the concentration from molarity (M) to moles per liter (mol/L). Then, multiply this value by Avogadro's constant to find the number of molecules in 1 L of blood.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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