207 is the mass number. 82 would be the atomic number
Answer:
the formula is 164.088 g/mol
Explanation:
A. True
Sedimentary rocks are the only rocks that can hold fossils.
Answer:
Explanation:
Assume you are using 1 L of water.
Then you are washing 4 L of salty oil.
1. Calculate the mass of the salty oil
Assume the oil has a density of 0.86 g/mL.
2. Calculate the mass of salt in the salty oil
3. Calculate the mass of salt in the spent water
4. Mass of salt remaining in washed oil
Mass = 172 g - 150 g = 22 g
5. Concentration of salt in washed oil
There is too much light entering her eyes.