Mrs Meador, because the water cycle is continuous and therefore has no clear end or beginning
I attached the working and the answer to both questions below.
Please note that E = energy, ν = frequency, h = Plank's Constant
<span>The energy of a 4.66 x 10</span>¹⁴<span> Hz wave is
3.088 </span>
× <span>
10</span>
⁻¹⁷ J
A a solid is the correct answer
Single cell organisms can reproduce very quickly
To make computations easier, let us assume that there is 1 liter solution of the sample.
So using the density formula to know what the mass of this sample would be:
1 L x 1000 mL / 1L x 1.20g/ 1 mL = 1120g
Now use the percent concentration by mass to know how many grams of HCl you can have:
1120 g sol x 39 g HCl / 100 g = 313.6 g HCL
To determine the solution's molarity, use the molar mass to know the number of moles present:
313.6g x 1 mole / 36.46g = 8.60 moles
since the sample has a volume of 1 L, the molarity is:
C = n / V = 8.60 moles / 1.0 L = 8.60 M
To get the solution's molarity, determine the mass of water.
Msol = Mwater + Macid
Mwater = Msol - Macid = 1120 - 313.6 = 806.4 g
The molarity will be:
b = n/ Mwater = 8.60 moles / 806.4 x 10^-3 = 10.66 molal
the solution's molarity will be equal to its normality since HCl acid can only release one mole of protons per mole of acid
Normality = 8.6 N
