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
Zolol [24]
3 years ago
5

What is the density of an aqueous solution that is 50.0% KOH by mass and has a KOH concentration of 13.39 M?

Chemistry
1 answer:
Contact [7]3 years ago
7 0

Answer:

Density = 1.56 g/mL

Explanation:

We have two sort of concentrations in here, so let's combine them.

% by mass means grams of solute in 100 g of solution

M means, moles of solute in 1L of solution.

We know that our solute is KOH (Molar mass = 56.1 g/mol)

We convert the moles of solute to grams:

56.1 g/mol . 13.9 moles = 779.79 g

Now, we know that 50 g of solute are in 100 g of solution

Then, 779.79 g of solute will be contained in (100 . 779.79)/50 = 1559.58 g of solution

Density = mass / volume

1559.58 g of solution / 1000 mL of solution = 1.56 g/mL

You might be interested in
What is the name for 3Na2SO4
Whitepunk [10]
Sodium sulfate is the answer you are looking for
4 0
3 years ago
Read 2 more answers
Taylor has a mass or 500 grams
aliya0001 [1]

Answer:

What this dose not make sence

Explanation:

Please explaplane

8 0
2 years ago
HELPPPPPP 30 POINTS Scientists are currently debating if a new epoch based on modern human activity should be added to the geolo
Margarita [4]

Answer:

Anthropocene

Explanation:

Anthropocene epoch is sort of unofficial epoch that scientists have used to describe basically human made impact on geological scale.

here's more info:

https://www.earthsystems.com/the-anthropocene/

3 0
2 years ago
Consider the following reaction where Kc = 154 at 298 K.2NO(g) + Br2(g) 2NOBr(g)A reaction mixture was found to contain 4.64×10-
IgorLugansk [536]

Answer:

The reaction is not at equilibrium and reaction must run in forward direction.

Explanation:

At the given interval, concentration of NO = \frac{4.64\times 10^{-2}}{1}M=4.64\times 10^{-2}M

Concentration of Br_{2} = \frac{4.56\times 10^{-2}}{1}M=4.56\times 10^{-2}M

Concentration of NOBr = \frac{0.102}{1}M=0.102M

Reaction quotient,Q_{c} , for this reaction = \frac{[NOBr]^{2}}{[NO]^{2}[Br_{2}]}

species inside third bracket represents concentrations at the given interval.

So, Q_{c}=\frac{(0.102)^{2}}{(4.64\times 10^{-2})^{2}\times (4.56\times 10^{-2})}=106

So, the reaction is not at equilibrium.

As Q_{c}< K_{c} therefore reaction must run in forward direction to increase Q_{c} and make it equal to K_{c}.

4 0
3 years ago
If the number is not a proper coefficient, how would you make it one?
noname [10]
I’m pretty sure you add, multiply, subtract, & divide
3 0
2 years ago
Other questions:
  • Formaldehyde (h2co) reacts with oxygen to form co2 and h2o. how many moles of co2 will be produced from reacting 2 moles of h2co
    10·2 answers
  • Which atom of water is associated with the cation? Which atom of water is associated with the cation? Oxygen atom, because the p
    11·1 answer
  • Please help I suck at chemistry
    9·2 answers
  • Which of the following describes wind direction?
    10·2 answers
  • Warm Up
    12·2 answers
  • Jello has a density of 1.14 g/mL. A box of Jello makes 475 mL of Jello and has 13 g of sugar. Determine the % m/m of sugar in th
    5·1 answer
  • In the lab, you are given a metal ball. You measure the mass of the ball to be 28 g. You place the ball in a graduated cylinder
    12·1 answer
  • If the Sun suddenly lost all of its gravity, which statement would best describe how the planets would move?
    9·1 answer
  • The atomic mass of an element is measured relative to the mass of *
    14·2 answers
  • 9.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!