<h2>
Answer:</h2><h2>
The percentage of the family’s total annual electricity that is used to run the two air conditioners for the three summer months = 19.4 %</h2>
Explanation:
Average electricity consumed per month = 900 kWh
The family cools their house for three months during the summer with two window-unit air conditioners
The power consumed by one window-unit air conditioners = 350 kWh
The power consumed by two window-unit air conditioners = 350(2) = 700 kWh
Power consumed for two air conditioners for the three summer months = 700 (3) = 2100 kWh
Total power consumed for 1 year = 900 (12) = 10800kWh
The percentage of the family’s total annual electricity that is used to run the two air conditioners for the three summer months = 
= 19.4 %
The osmotic pressure of the glucose solution is 21.49 atm.
From the question given above, the following data were obtained:
- Molarity (M) = 0.85 M
- Temperature (T) = 35 °C = 35 + 273 = 308 K
- Van't Hoff's factor (i) = 1 (non-electrolyte)
- Gas constant (R) = 0.0821 atm.L/Kmol
- Osmotic pressure (π) =?
π = iMRT
π = 1 × 0.85 × 0.0821 × 308
π = 21.49 atm
Therefore, the osmotic pressure is 21.49 atm
Learn more about osmotic pressure: brainly.com/question/19533851
<u>Answer:</u> The concentration of solution is 0.342 M
<u>Explanation:</u>
To calculate the molarity of solution, we use the equation:
We are given:
Mass of solute (Sodium chloride) = 15 g
Molar mass of sodium chloride = 58.5 g/mol
Volume of solution = 750 mL
Putting values in above equation, we get:
Hence, the concentration of solution is 0.342 M
chlorobenzene
Carbon - 6
Hydrogen - 5
Chlorine - 1
that 1 chlorine replaces one of the hydrogens
thats why hydrogen number decreases by number of Cl atoms (that are substituting those H atoms)
Answer: a) 90.5g
b) 33.6 L
Explanation:-
Molar mass of tyrosine 
= 181 g/mol
According to Avogadro's law, 1 mole of every substance weighs equal to its molar mass.
1 mole of tyrosine weighs = 181 g/mol
0.5 moles of tyrosine weigh 
b) According to Avogadro's law, 1 mole of an ideal gas occupies 22.4 Liters at Standard conditions of temperature and pressure (STP).
1 mole of gas at STP occupy = 22.4 L
1.5 moles of gas at STP occupy =
