Answer:
1. 6.45 L
2. 1.76 x 10²³ molecules
Explanation:
1. Avagadros law states that volume of gas at constant temperature and pressure is directly proportional to the amount / number of moles of that gas
we can use the following equation
v1/n1 = v2/n2
where v1 is volume and n1 is number of moles at first instance
and v2 is volume and n2 is number of moles at second instance
at the first instance - n1 = 0.218 mol
second instance - n2 = 0.218 mol + 0.075 mol = 0.293 mol
substituting the values
4.8 L / 0.218 mol = v2 / 0.293 mol
v2 = 6.45 L
new volume is 6.45 L
2. 1 mol of any substance is made of 6.022 x 10²³ units. These units could be atoms making up elements or molecules making up a compound.
therefore if 1 mol consists of 6.022 x 10²³ molecules
then 0.293 mol consists of - 6.022 x 10²³ molecules/mol x 0.293 mol = 1.76 x 10²³ molecules
therefore there are 1.76 x 10²³ molecules now in the cylinder
Answer:
CHCI₃
Explanation:
Chloroform, IUPAC name, trichloromethane, is organic compound with the molecular formula CHCl₃. It is colorless and sweet-smelling liquid having high density which is produced on a large scale precursor of PTFE , and for various refrigerants .
Chloroform , is a powerful euphoriant , anxiolytic , anesthetic and sedative when inhaled or ingested .
Answer;
B. They are large molecules that increase the rate of biologically important reactions.
Explanation;
-Enzymes are biological molecules, that are protein in nature, that significantly speed up the rate of virtually all of the chemical reactions that take place within cells.
-They are vital for life and serve a wide range of important functions in the body, such as aiding in digestion and metabolism. Some enzymes help break large molecules into smaller pieces that are more easily absorbed by the body. Other enzymes help bind two molecules together to produce a new molecule.
Answer:
The polarity of the carbonyl group notably affects the physical properties of melting point and boiling point, solubility, and dipole moment. Hydrocarbons, compounds consisting of only the elements hydrogen and carbon, are essentially nonpolar and thus have low melting and boiling points.
Explanation:
pls mark brainliest and these are my notes from last year.
Answer:
This is a precipitation reaction: AgCl is the formed precipitate.
