Explanation:
Light is not invisible
sound cant travel in a vacuum
"The proton and neutron have nothing to do with the isotope little billy"
Answer:
Explanation:
The speed of light is given by
and 
hence
Speed of light is given by
5.55 mol H2O
Explanation:
Water has a molar mass of 18.01528 g/mol. We can then calculate the number of moles of water as
100 g H20 × (1 mol H2O/18.01528 g H20)
= 5.55 mol H2O
If she read 41 pocketbooks this month then she read last month=41-13=28
