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2 years ago

What is the H concentration in a solution with a pH of 1. 25? Round to the nearest hundredth. × 10n M n=.

1 answer:

3 0

The pH is the measure of hydrogen ion concentration in a solution. The hydrogen ion concentration at pH 1.25 is $\rm\bold{ 5\;\times 10^{-2}\;M}$ .

<h3>How to calculate hydrogen concentration?</h3>

The pH is the negative logarithmic value of the hydrogen ion concentration in the sample.

The pH can be expressed as:

$\rm pH=-log[H^+]$

The hydrogen ion concentration can be given as:

$\rm [H^+]=10^{-pH}$

The given pH is 1.25 The hydrogen ion concentration is given as:

$\rm [H^+]=10^{-1.25}\\H^+=0.05\;M\\H^+=5\;\times\;10^-^2\;M$

The hydrogen ion concentration in the solution is $\rm 5\;\times\;10^{-2}\;M$ .

Learn more about pH, here:

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What is the part of the male reproductive organ that stores newly-formed sperm cell?

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Answer:

B. Epididymis

Explanation:

Sperm are stored in the epididymis until fully developed. The epididymis is located on the back part of the testis, the male’s reproductive organ.

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3 years ago

Which of the following chemical agents is used for sterilization? Which of the following chemical agents is used for sterilizati

lozanna [386]

Answer:

The correct answer is super critical fluids.

Explanation:

Supercritical fluids are the fluids which are compressed below their critical temperature, kept in liquid state and used above their boiling point.The most common example of this are : liquid carbon dioxide gas and water.

They have properties of gas and liquid.
They can easily effuse through solids like gas and dissolves other substance in them like liquid.

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2 years ago

Main job is to sort and package proteins and other substances in a plant cell

melomori [17]

Answer:

Main job of golgi bodies is to sort and package proteins and other substances in a plant cell.

Explanation:

Golgi bodies are also called post office of the cell because it modify and distribute proteins for the cell. First, proteins are made in the organelle of the cell i. e. endoplasmic reticulum. From here, it is send to the Golgi apparatus for modification. Golgi bodies add some special structures with the protein and this protein leaves golgi bodies which is used by the cell where it is needed.

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3 years ago

The human body excretes nitrogen in the form of urea, NH₂CONH₂. The key step in its biochemical formation is the reaction of wat

Misha Larkins [42]

Mass perventage of nitrogen in urea, arginine, ornithine is 46.67%, 32.2%,21% respectively.

What is Mass perventage ?

Mass percentage is one way of representing the concentration of an element in a compound or a component in a mixture. Mass percentage is calculated as the mass of a component divided by the total mass of the mixture, multiplied by 100.

Molecular mass of urea (NH2CONH2) is= 2× (Atomic mass of N ) + 4 × (Atomic mass of H) + (Atomic mass of C) (Atomic mass of O) = 60

Mass percentage of N = $Total mass of N atoms in the compoundMass of compound×100=2860×100=46.67%$

chemical formula for arginine is C6H14N4O2

molar mass of C6H14N4O2=174g/mol

moles of N atoms in C6H14N4O2=4

mass of N atoms=14*4=56g

mass percent of N in C6H14N4O2=(56/174)*100=32.2%

the chemical formula for ornithine is C5H12N2O2

molar mass of C5H12N2O2=132g/mol

moles of N atoms in C5H12N2O2=2

mass of N atoms in C5H12N2O2=2*14=28

mass percent of N in C5H12N2O2=(28/132)*100=21%

To learn more about urea click on the link below:

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1 year ago

What will occur if the velocity of the gas molecules colliding with the sides of the container increases?

yanalaym [24]

The pressure of the gas will increases

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3 years ago

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