Which branch of chemistry would study how pollution effects marine life?

Solute S has a partition coefficient of 6.2 between water (phase 1) and hexane (phase 2). 74.0 mL solution of S in water is extr

amid [387]

Explanation:

The given data is as follows.

Partition coefficient, K = 6.2

Volume of phase 1, $V_{1}$ = 74.0 mL

Volume of phase 2, $V_{2}$ = 17.0 mL

So, after one extraction fraction of solute remaining is given as follows.

q = $\frac{V_{1}}{V_{1} + KV_{2}}$

After 3 times extraction, fraction of S remaining is as follows.

q = $[\frac{V_{1}}{V_{1} + KV_{2}}]^{3}$

Putting the given values into the above formula as follows.

q = $[\frac{V_{1}}{V_{1} + KV_{2}}]^{3}$

= $[\frac{74.0 ml}{74.0 ml + 6.2 \times 17.0 ml}]^{3}$

= $[\frac{74.0 ml}{179.4 ml}]^{3}$

= 0.0699

Thus, we can conclude that the fraction of S remaining in the aqueous phase is 0.0699.

6 0

3 years ago

What wil most likely result if a diabetic injects an overdose of insulin

Harrizon [31]

It causes an overdose which leads to the liver releasing less Glycose. The level of glucose the insulin is allowing cells to absorb which causes low blood sugar levels. sorry if that's a bit confusing.

4 0

3 years ago

Can someone please explain core and valence electrons in periods for me please

Lena [83]

Answer:

The electrons of an atom are typically divided into two categories: valence and core electrons. Valence electrons occupy the outermost shell or highest energy level of an atom while core electrons are those occupying the innermost shell or lowest energy levels

Explanation:

i hope u get it :))

6 0

3 years ago

There were 6 students in the class wearing white sneakers. This would be an example of an observation that is

Rus_ich [418]

Answer:

4.

Explanation:

It's neither qualitative and quantitative. Qualitative is speculation on quality, and quantitative is speculation on quantity, or the amount of something.

3 0

3 years ago

To aid in the prevention of tooth decay, it is recommended that drinking water contains 0.900 ppm fluoride (F-). A) How many g o

Romashka-Z-Leto [24]

Answer:

a) <u>1.740 g</u> of F- must be added to a cylindrical water reservoir

b) Grams of sodium fluoride, NaF, that contain this much fluoride:

3.84 g

Explanation:

Step 1. calculate the volume of the tank:

Volume of cylinder =

$\pi r^{2}h$ ,