science pls pahelp po


Science Pls Pahelp Po class=

Sagot :

Answer:

1. B

The mole, abbreviated mol, is an SI unit which measures the number of particles in a specific substance. One mole is equal to 6.02214179×1023 atoms atoms, or other elementary units such as molecules.

2. C

The mole unit is very important for chemical reactions, as is the skill to convert masses in g to mol. The number of moles of a substance in a sample is the mass in g divided by the molar mass, which gives the amount in moles.

3. C

( I'm not s u r e )

4. C

Chemists generally use the mole as the unit for the number of atoms or molecules of a material. One mole (abbreviated mol) is equal to 6.022×1023 molecular entities (Avogadro's number), and each element has a different molar mass depending on the weight of 6.022×1023 of its atoms (1 mole).

5. B

( I'm not s u r e )

6. A

( I'm not s u r e but i think letter A )

Correct me if I'm wrong :)