1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alja [10]
4 years ago
15

Sugar is easily soluble in water and has a molar mass of 342.30 g/mol. What is the molar concentration of a 259.8 mL aqueous sol

ution prepared with 73.1 g of sugar?
Chemistry
1 answer:
DanielleElmas [232]4 years ago
5 0

Answer:

M=0.822M

Explanation:

Hello,

In this case, given the mathematical definition of molar concentration as the moles of solute divided by the liters of solution:

M=\frac{n}{V}

We can easily compute it by firstly computing the moles of sugar by using its molar mass:

n=73.1g*\frac{1mol}{342.30g} =0.214mol

After that, we compute the concentration by realizing 259.8 mL equals 0.2598 L:

M=\frac{0.214mol}{0.2598L}\\ \\M=0.822mol/L

Or just:

M=0.822M

Considering molar units as mol/L

Best regards.

You might be interested in
What is the lowest common multiple of 4, 10, and 16?
jonny [76]
The least common multiples of 4, 10, and 16 is 80.
3 0
3 years ago
A certain liquid has a normal boiling point of and a boiling point elevation constant . A solution is prepared by dissolving som
irinina [24]

Answer:

m_{KBr}=6.030gKBr

Explanation:

Hello.

In this case, since the normal boiling point of X is 117.80 °C, the boiling point elevation constant is 1.48 °C*kg*mol⁻¹, the mass of X is 100 g and the boiling point of the mixture of X and KBr boils at 119.3 °C, we can use the following formula:

(T_b-T_b_0)=i*m*K_b

Whereas the Van't Hoff factor of KBr is 2 as it dissociates into potassium cations and bromide ions; it means that we can compute the molality of the solution:

m=\frac{T_b-T_b_0}{i*K_b}=\frac{(119.3-117.8)\°C}{2*1.48\°C*kg*mol^{-1}}\\  \\m=0.507mol/kg

Next, given the mass of solventin kg (0.1 kg from 100 g), we compute the moles KBr:

n_{KBr}=0.507mol/kg*0.1kg=0.0507mol

Finally, considering the molar mass of KBr (119 g/mol) we compute the mass that was dissolved:

m_{KBr}=0.0507mol*\frac{119g}{1mol} \\\\m_{KBr}=6.030gKBr

Best regards.

3 0
4 years ago
What is the sum of all of the digits in the iupac name for the compound shown below?
Allisa [31]
I can’t answer the question sorry. I don’t know what the equation is
4 0
3 years ago
10. Which functional group is present in the molecule?<br> Alcohol
mina [271]

It carries at least one hydroxyl functional group ( i.e -OH ) bound to a saturated carbon atom.

Therefore the functional group present is -OH functional group.

8 0
3 years ago
How many grams of ethane gas (C2H6) are in 12.7-liter sample at 1.6 atmosphere and 24 degrees Celsius? Show all work used to sol
pentagon [3]
Data:
M (Molar Mass) of C2H6
C = 2*12 = 24 amu
H = 6*1 = 6 amu
---------------------
MM C2H6 = 24+6 = 30 g/mol

P (pressure) = 1.6 atm
V (volume) = 12.7 L
<span>R = 0,082 atm .L/mol.K
n (</span>Number of mols) →  n = \frac{m}{MM} m (mass) = ? T = 24ºC  Celsius to Kelvin TK = TºC + 273 TK = 24 + 273 TK = 297   By the equation of state of the gases or equation of Clapeyron, we have:&#10;   [tex]P*V = n*R*T<span>
 
Since </span>n =  \frac{m}{MM}<span>, we can perform the following substitution in the above Clapeyron equation:
</span>

P * V = n * R * T
P*V =  \frac{m}{MM} *R*T
multiply cross
m =  \frac{P*V*MM}{R*T}

Solving:
m = \frac{P*V*MM}{R*T}
m =  \frac{1.6*12.7*30}{0.082*297}
m =  \frac{609.6}{24.354}
\boxed{\boxed{m \approx 25.03\:grams}}\end{array}}\qquad\quad\checkmark

Answer:
25.03 grams of ethane gas 
5 0
3 years ago
Other questions:
  • Krispy Kreme Doughnuts decide to donate $10,000 to a classroom for a party how many donuts did they donate in total
    10·1 answer
  • Which statement is true about the electrons that can be located together in an orbital?
    10·1 answer
  • Calculate the rate of dissolution (dM/dt) of relatively hydrophobic drug particles with a surface area of 2.5×103 cm2 and satura
    14·1 answer
  • What mineral has 2 sugar-cube sized, irregularly shaped pieces. Brassy-yellow in color with metallic luster. Flat surfaces look
    5·1 answer
  • what is the pressure inside a tank when it contains 87.3 moles of Helium if it holds 52.0 miles at 9.63 atm
    11·1 answer
  • As water molecules move through the hydrological cycle, water both gains and loses energy. In which case would the water be losi
    10·2 answers
  • Students asked to measure the temperature of a reaction beaker recorded the following temperatures. 103.7°C, 108.4°C, 105.8°C, 1
    11·2 answers
  • Please help me! U will get a 30 points!
    12·1 answer
  • Transverse waves move the medium perpendicular <br> true or false
    10·1 answer
  • When you are drying your hands underneath a hand dryer, this is an example ofA. RadiationB. ConductionC. ConvectionD. Convection
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!