Answer:
Amount of solute decreases
Explanation:
Since during dilution, the solute dissolves on the solvent hence its amount decreases.
Oxygen is a reactant in combustion and the concentration of oxygen is higher in pure oxygenthan it is in air.
Answer:
The student should use 156.7 g of solution
Explanation:
31.9 %w solution of acetic acid in ethanol means 100 g of solution contains 31.9 g of acetic acid.
So, 450. g of solution contains 
of acetic acid or 143.55 g of acetic acid
Alternatively, 143.55 g of acetic acid is present in 450. g of solution
So, 50.00 g of acetic acid is present in 
solution or 156.7 g of solution
Hence the student should use 156.7 g of solution
The bonds that hold atoms together to form molecules are called covalent bonds. They are pretty tough and not easily made or broken apart. It takes energy to make the bonds and energy is released when the bonds are broken. Trees take light and use it to make bonds between carbon atoms and molecules of cellulose. I hope this helps:)
Answer: ATP is the energy currency molecule which is required for cellular processes.
Explanation:
When the cell require metabolic energy to perform a particular a task. From the ATP or adenosine triphosphate molecule one of three phosphate molecule gets displaced and liberates the resulting molecule becomes adenosine diphosphate or ADP. The phosphate molecule is used by the cell to perform different cellular and metabolic functions as a source of metabolic energy. The phosphate is released by the hydrolysis of the phosphoanhydride bond with the other phosphate group.
