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
sattari [20]
3 years ago
15

The density of a 15.00% by mass aqueous solution of acetic acid, CH3COOH, is 1.0187g/mL. What is (a) the molarity? (b) the molal

ity? (c) the mole fraction of each component?
Chemistry
1 answer:
aleksandr82 [10.1K]3 years ago
8 0
<span>What is (a) the molarity?

.15 g CH3COOH / g solution ( 1 mol / 60.05 g ) (1018.7 g / L ) = 2.5 mol / L or 2.05 M


(b) the molality?

</span>.15 g CH3COOH / g solution ( 1 mol / 60.05 g ) ( 1000 g / 1kg ) = 2.5 mol/kg or 2.5 m<span>

Hope this helped. Have a nice day.

</span><span>
</span>
You might be interested in
A sodium atom has 11 protons, 10 electrons, and 12 neutrons. What is its charge
OverLord2011 [107]

Answer:

An ion with 11 protons, 11 neutrons, and 10 electrons would have a charge of 1+, also expressed as a charge of positive one or +1.

6 0
2 years ago
What will be the final temperature of the solution in a coffee cup calorimeter if a 50.00 mL sample of 0.250 M HCl(aq) is added
padilas [110]

Answer:

21.21°C will be the final temperature of the solution in a coffee cup calorimeter.

Explanation:

HCl+NaOH\rightarrow H_2O+NaCl

\Delta H = enthalpy change = -57.2 kJ/mol of NaOH

Moles of sodium hydroxide = n

Molarity of the NaOH = 0.250 M

Volume of NaOH solution = V = 50.00 mL = 0.050 L

n=Molarity\times V=0.250 M\times 0.050 L= 0.0125 mol

Moles of HCl = n'

Molarity of the HCl= 0.250 M

Volume of HCl solution = V' = 50.00 mL = 0.050 L

n'=Molarity\times V=0.250 M\times 0.050 L= 0.0125 mol

Since 1 mole of Hcl reacts with 1 mole of NaoH. Then 0.0125 mole of HCl will react with 0.0125 mole of NaOH.

The enthalpy change during the reaction.

\Delta H=-\frac{q}{n}

q=\Delta H\times n=-57.2 kJ/mol \times 0.0125 mol= -0.715 kJ=-715 J

q = heat released on reaction= -715 J

now, we calculate the heat gained by the solution.:

Q= -q = -(-715 J) = 715 J

m = mass of the solution = ?

Volume of the solution formed by mixing, v = 50.00 ml + 50.00 mL = 100.00 mL

Density of the solution = density of water = d = 1 g/mL

mass=density\times volume=d\times v=1 g/ml \times 100.00 ml=100 g

m = 100 g

q = heat gained = ?

c = specific heat = 4.18 J/^oC

T_{f} = final temperature = ?

T_{i} = initial temperature = 19.50^oC

Q=mc\times (T_{f}-T_{i})

Now put all the given values in the above formula, we get:

715 J=100 g\times 4.18J/^oC\times (T_f-19.50)^oC

T_f=21.21 ^oC

21.21°C will be the final temperature of the solution in a coffee cup calorimeter.

5 0
3 years ago
20 gram of marble containing 90% calcium carbonate is allowed to react with 50 gram of a concentrated acid containing 36.5% HCl
Hitman42 [59]

Explanation:

Good day very tough question

6 0
2 years ago
What is characteristic of a covalent bond?
dmitriy555 [2]
A.electrons are shared between two different nuclei
7 0
3 years ago
"A bicycle's brakes apply 299 N of frictional force to the wheels as the bike moves 24 m
Usimov [2.4K]

Answer:

0.62 N

Explanation:

first of all: 3.0 s = 0.05 m

Let ? be the work that brakes do at 3.0s

24 m ----> 299 N

0.05 m ---->?

? = (0.05 m x 299 N)/ 24

? = (14.95)/ 24

? = 0.622 N

8 0
3 years ago
Other questions:
  • Convert 345 NH3 grams to moles
    5·2 answers
  • Inside the room the air is often warmer near the ceiling than near the floor. Which of the following accounts for the difference
    12·1 answer
  • Write the balanced equation showing hydrogen iodide (HI(g)) dissolving in water.
    15·1 answer
  • This question is very hard and I'm having trouble with it<br>​
    14·1 answer
  • 2 reasons why recycling aluminium is a good idea
    10·2 answers
  • Calculate the volume of a 2.30 mol/L solution of Na2CO3 that contains 0.325 mol of solute.
    9·1 answer
  • Improvements in which area would help reduce the possibility of damage to the environment when using uranium as a fuel?
    6·1 answer
  • What would the final salt concentration be if instead of placing the dialysis bag in 4.0 L of distilled water for 12 h, you plac
    7·1 answer
  • Name the group of elements that will not participate in ionic bonding.
    10·2 answers
  • Why do the stars appear to move across the night sky?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!