Answer:
C.
Explanation:
You have to just know this. Their is really no other explanation.
- Hope that helps! Please let me know if you need further explanation.
Its very easy, all we need is the following formula
c= λ x ν
c= speed of light
λ= wavelength
ν= frequency
we can rearrange the formula to solve for the unknown asked.
ν= c/λ
v= (2.998 x 10^8)/ (3.55 x 10^-8)= 8.45 x 10^15
Explanation:
hope this helps you..........
Answer:I need it
Explanation: I have the same quision in my chemistry exam but i dont have the answer
Mass of water: 8 * 18 g = 144 g
mass of Ba(OH)2 = 171.3 g
total mass: 144 g + 171.3 g = 315.3 g
percentage of water: (144 g / 315.3 g) * 100% = 45.67%