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Marianna [84]
3 years ago
5

Balance the following chemical equation

Chemistry
1 answer:
iragen [17]3 years ago
7 0
Where is chemical equation?
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Based on the data table, which unknown solution could be 0.1 m naoh
Aliun [14]

Answer:

Where is the data table?

3 0
4 years ago
The nonvolatile, nonelectrolyte estrogen (estradiol), C18H24O2 (272.40 g/mol), is soluble in chloroform CHCl3.
Artist 52 [7]

<u>Answer:</u> The molarity of solution is 0.274 M and the osmotic pressure of the solution is 6.70 atm

<u>Explanation:</u>

To calculate the molarity of the solution, we use the equation:

\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}

We are given:

Given mass of estrogen = 13.5 g

Molar mass of estrogen = 272.40 g/mol

Volume of solution = 181 mL

Putting values in above equation, we get:

\text{Molarity of solution}=\frac{13.5\times 1000}{272.40\times 181}\\\\\text{Molarity of solution}=0.274M

Hence, the molarity of solution is 0.274 M

To calculate the osmotic pressure of the solution, we use the equation:

\pi=iMRT

where,

\pi = osmotic pressure of the solution = ?

i = Van't hoff factor = 1 (for non-electrolytes)

M = molarity of solute = 0.274 M

R = Gas constant = 0.0821\text{ L atm }mol^{-1}K^{-1}

T = temperature of the solution = 298 K

Putting values in above equation, we get:

\pi=1\times 0.274mol/L\times 0.0821\text{ L.atm }mol^{-1}K^{-1}\times 298K\\\\\pi=6.70atm

Hence, the osmotic pressure of the solution is 6.70 atm

8 0
3 years ago
Calculate the heat released when 25.0 grams of water freezes at 0 degree Celsius.
mafiozo [28]

Answer:

= 8350 joules

Solution and explanation:

  • The heat of fusion refers to the quantity of heat released when a given amount of water freezes.
  • For example, 1 g of water releases 334 J when it freezes at 0°C.

Therefore; For 25.0 g of water.

Heat released = Mass of water × heat of fusion

                        = 25 g × 334 J/g

                        = 8350 Joules

Hence, the amount of heat released when 25.0 g of water freezes at 0°C is 8350 J.

5 0
3 years ago
Peppered moths come in two colors, black and white. What did Kettlewell show, with regard to peppered moth populations and tree
Vera_Pavlovna [14]
A is the answer because the trees turned blackish from the coal so moths that were black could camouflage on those trees easier.
4 0
3 years ago
Read 2 more answers
Matter is defined as anything that
podryga [215]

Answer:

d

Explanation:

5 0
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