Answer:
mammal
Explanation:
mammals are the types of animals who dont have eggs
Answer:
The answers are either 1 or 4
Explanation:
I am pretty dure it is 1
Hi! :)
Ba(OH)2 + 2 HNO3 → Ba(NO3)2 + 2 H2O
(18.2 mL) x (0.45 M Ba(OH)2) x (2 mol HNO3 / 1 mol Ba(OH)2) / (38.5 mL HNO3) = 0.43 M HNO3
solution:
You need to find the frequency, and they have already given you the wavelength. And since you already know the speed of light, you can use formula (2) to answer this problem. Remember to convert the nano meters to meters because the speed of light is in meters. 

That would be A.
2.5*2*10^(10-7)=5*10^3