Hello student, hope you are safe and healthy!

After the woman completed her kidney transplant, the problem of rejection of the transplanted kidney arises. This is because her body will think this new kidney is “foreign” and will try to protect her by “attacking” it. To prevent this rejection, anti-rejection bioactive drugs are administered. These bioactive molecules are called immunosuppressants .

The Anti–rejection (immunosuppressant) medications decrease the body’s natural immune response to a “foreign” substance (your transplanted kidney). They lower (suppress) her immune system and prevent her body from rejecting her new kidney.

The immunosuppressive agent used for preventing rejection of transplanted organs is Cyclosporin-A . It is produced by submerged fermentation of aerobic fungi identified as Trichoderma polysporum .

Hope this answer helps:)

Happy learning!

Hi Garima,

It is given that there is 0.10 ppb of chloroform in a certain water supply, which means 10^9 g of water contains 0.10 g of CHCL3 ( because 1 billion = 10^-9)

Now volume of water = 0.478 mL (given)

Assume density of water to be 1 g/mL

Mass of the water can be calculated as, mass = density * volume

Therefore, mass = 0.478 ml * 1 g/mL = 0.478 g

Now, 10^9 g of water contains 0.10 g of CHCL3

Therefore, 1 g of water will contain 0.10 g / 10^9 g of CHCL3 = 10^-10 g of CHCL3

Therefore, 0.478 g of water will contain 0.478  * (10^-10) g of CHCL3

Now, no. of moles can be calculated using the formula = Given Mass/ Molecular Mass

Therefore no. of moles of CHCL3 = (0.478 * 10^-10) / 119.5 = 0.004 * (10^-10) = 4 * (10^-13)

(molecular mass of CHCL3 = 119.5 g)

Now one mole of any compound contains = Na no. of molecules

therefore 4 * (10^-13) moles of CHCL3 will contain 4* 10^-13 * Na  no. of molecules

Therefore, 0.478 mL of this water will contain 4 * 10^-13 * Na molecules of CHCL3

Hope this helps!

hello adnan,

As we know that for a molecule, molecular weight in grams is equal to the Avogadro number and for transforming between moles and grams, we could use the molar mass of the substance. Avogadro’s number can be expressed as the number of elementary particles such as molecules, atoms, compounds, etc. per mole of a substance and Avogadro number is often denoted as NA.

18 mole of water will contain 18×6.023×1023 number of molecules.

therefore the number of water molecules is maximum in 18 moles of water.

hope this will help you a  lot.

thank you.

Hello student,

As per we know that the respiration of 1 mole sucrose in UN aerobic oxidation produced 2 adenosine triphosphate.

So 2 molecules of sucrose are used in produced by anaerobic oxidation the total number of atp produced is about 4 nos.

And if  it is done by aerobic oxidation the total number can be 128 nos of atp.

Hope  this will help you

Hello Gaikwadomkar,

As we know to find maximum number of molecules  we have to divide the given mass by its molar mass to get moles, then multiply times 6.022×1023 molecules1 mol

Now to answer your question 1 mole of any element contain 6.023 x 1023 number of molecules.

1 g mole of N2 = 28 g N2 => 7 g N2 = 0.25 g mole N2

1 g mole of O2 = 32 g O2  => 16 g of O2 = 0.5 g mole O2

1 g mole of H2 = 2 g H2 => 2 g H2 = 1.0 g mole H2

1 g mole NO2 = 14 + 16 x 2 = 46 => 16 g of NO2 = 0.35 mole NO2

2 g H2 (1 g mole H2) contain maximum molecules.

hope  this will help you a lot.

thank you.

Hello sumittamrakar,

Hope you are doing well, Now coming back to the question as we know

An atom is a particle of matter that characterizes a chemical element. It is the smallest part of ordinary matter. It is made from particles called protons, neutrons and electrons called the subatomic particles.

An element is a substance that is made entirely of one type of atom. For example, the element sodium is made up of only sodium atoms.

A molecule is a substance that contains two or more atoms chemically joined, such as H2,O2

A compound is a substance that is made up of two or more different elements (https://socratic.org/chemistry/a-first-introduction-to-matter/elements) that are chemically joined, such as H2O,CO,NaCl .

hope this will help you a lot,

thank you.

Hello gaddamnagasaiteja,

As we know that pressure depends only on the force between them.

Now to answer the question, there will be no change in the pressure of the gas if we increase the no of molecule twice the previous . As pressure is independent of the  number of molecules of the gas.

hope this will help you.

thank you.