Question 24 (1 point) An 2 kg apple is hanging in a tree, 10 ft off the ground. What is the gravitational potential energy (gravity =
9.8 m/s2) of the apple?
ФЫ
960.4)
98
1920.8)
196)
d

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