Which of these are qualititative descriptions? A
Horror Films
B
78 Baboons
C
1 Dollar
D
1,000,000,000 Nugget

1. 1 mole of anything contains 6.022x10^23 pieces  

d  

2. a  

3. c, number  

5. 1.24x10^24atoms / 6.022x10^23atoms/mole = 2moles h2 atoms  

6. fe2br3 mass = 2moles x mass fe + 3 moles x mass br  

molar mass = grams / number of moles = g/mole  

to find moles = g / molar mass  

to find mass = g = molar mass / moles

i believe it is-

d.) gravity pulled particles of dust and gas together to form planets.

all eukaryotic cell have mitochondria : )

air

in a tire you fill a tire with air

then a couple days later you check the air pressure in the tire

hope this mark me brainliest