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
Mamont248 [21]
3 years ago
11

Calculate the molarity of a solution prepared by dissolving 12.5 g of Na2CrO4 in enough water to produce a solution with a volum

e of 810. mL .
Chemistry
1 answer:
gregori [183]3 years ago
4 0

Answer:

0.0953M

Explanation:

First, let us calculate the number of mole present in 12.5g of Na2CrO4.

Molar Mass of Na2CrO4 = (23x2) + 52 +(16x4) = 46 + 52 +64 = 162g/mol

Mass of Na2CrO4 = 12.5g

Number of mole =?

Number of mole =Mass /Molar Mass

mole of Na2CrO4 = 12.5/162 = 0.0772mol

Now, we can calculate for the molarity as follows:

Mole = 0.0772mol

Volume = 810mL = 810/1000 = 0.81L

Molarity =?

Molarity = mole /Volume

Molarity = 0.0772mol/0.81L

Molarity = 0.0953M

You might be interested in
What should the IUPAC name for a binary covalent compound lack ?
zavuch27 [327]
The answer to the question is "B. Roman Numerals"
5 0
4 years ago
Read 2 more answers
How are science and technology related? A. Science is a branch of technology. B. Science is the application of technological kno
Papessa [141]

The answer should be C. Technology is the application of the knowledge gained by science.

5 0
3 years ago
Read 2 more answers
Whats does the sun and the solar system orbit plz helo me its for a test
madreJ [45]
The sun does not orbit anything everything orbits the sun and I don't think the solar system orbits anything I'm sorry
4 0
3 years ago
Discard the water from the first step and re-fill the tall drinking water glass with the chilled water. Then slowly pour a small
inna [77]

Answer:

The hot water remains at the top of chilled water.

Explanation:

The hot water remains at the top of chilled water because hot water has less denser as compared to chilled water. Due to higher density of chilled water, it remains at the bottom due to its greater mass while on the other hand, the hot freshwater goes upward and spreads at the top of the chilled water due to lower mass so when the hot water is added to the chilled water, hot water remains at the top.

6 0
3 years ago
A certain metal M forms a soluble sulfate salt M2SO4. Suppose the left half cell of a galvanic cell apparatus is filled with a 5
VikaD [51]

Answer:

Right

Explanation:

The given parameters are;

The soluble sulfate formed by the metal, M = M₂SO₄

In the galvanic cell formed by the metal M, we have;

The concentration of M₂SO₄ in the left half cell = 50.0 mM = 0.05 M

The concentration of M₂SO₄ in the right half cell = 5.00 M

In the galvanic cell, the metal 'M' will be dissolved into the solution with lower concentration as M²⁺ which is the left half cell, making the cell negative and the solution more concentrated

In the right half cell, the metal 'M²⁺' in the solution will be plated unto the electrode making the solution less concentrated and the electrode in the right half cell will be the positive electrode

Therefore;

The electrode which will be positive is the electrode in the right half cell.

8 0
3 years ago
Other questions:
  • The emission spectrum of an element:
    14·1 answer
  • What are the three states of matter?
    6·1 answer
  • The concentrations of Fe and K in a sample of riverwater are 0.0400 mg/kg and 1.30 mg/kg, respectively. Express the concentratio
    11·1 answer
  • What is the octet rule and how is it used in covalent bonding?
    9·1 answer
  • HELP PLEASE!!!<br> a. river<br> b. mountain<br> c. island<br> d. lake
    8·2 answers
  • What are 4 signs that chemical reaction had occurred?
    15·2 answers
  • Explain
    7·2 answers
  • What are mole particle calculations ?​
    13·2 answers
  • The collective name for the abiotic factors which include light, temperature, water, atmospheric gases and wind.​
    11·1 answer
  • The _______________________________ css3 property can be used to create multiple columns of text within a single element.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!