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
pochemuha
3 years ago
14

An unknown metal sulfate is found to be 72.07% SO4 2- by mass. Assuming that the charge on the metal cation is +3, determine the

identity of the cation.
Chemistry
1 answer:
wariber [46]3 years ago
8 0
Lets name the unknown metal as M. Cation would be M³⁺.
the molecular formula of the compound is M₂(SO₄)₃
the mass of one mole - (molar mass of M x2 + 3 x molar mass of SO₄²⁻)
                                   = 2M + 96 x 3
                                   = 2M + 288
In 1 mol if there's 72.07% of sulphate , 
then 72.07 % corresponds to 288 g
               1 % is then      - 288/72.07 
       100 %  of the compound - 288/72.07 x 100 
 molar mass of the compound - 399.6 g/mol
mass of 2M - 399.6 - 288 = 111.6 g
molar mass of M - 111.6 /2 = 55.8 g/mol
the element with molar mass of 55.8 is Fe.
Unknown metal is iron(III) , Fe³⁺

You might be interested in
Which of the following instruments has the highest pitch?<br> bass drum<br> flute<br> trombone
sweet [91]

Answer:

Flute

Explanation:

7 0
3 years ago
Read 2 more answers
The Olympian swam 200 meters in 20 seconds. <br> 1) velocity<br> 2) acceleration<br> 3) speed
irakobra [83]

Answer: velocity

Explanation:

3 0
2 years ago
Read 2 more answers
Carbon dioxide gas and solid magnesium oxide are produced by the decomposition of solid magnesium carbonate. Write a balanced ch
Westkost [7]

Athe temperature has a great timer ksnswer:

Explanation:

7 0
3 years ago
What can be said of a closed system when an exothermic reaction proceeds in an aqueous solution?
lyudmila [28]
An exothermic reaction is a type of reaction that dissipates heat as the reaction proceeds. This would mean that in a closed system, when a reaction proceeds and is endothermic, the temperature of the solution  or the system would increase so as to maintain the equilibrium with the whole system.
8 0
3 years ago
And non-flammable gases<br> Noble gases are<br> that have low chemical
gtnhenbr [62]

Answer:

  • Noble gases are <u>odorless, colorless,</u> and nonflammable gases that have low chemical <u>reactivity</u><u>.</u>
  • The full <u>valence electron shells</u><u> </u>of these atoms make noble gases extremely <u>stable</u><u>.</u>
  • & they are <u>unlikely to form chemical bonds</u><u> </u>because they have little tendency to gain or lose

<u>electrons.</u>

5 0
3 years ago
Other questions:
  • In this Punnett square, what is the probability of the offspring being a heterozygous purple flower
    9·1 answer
  • when bisecting an angle, one of the steps is to draw an arc centered on a point on a ray of the angle. in particular this angle
    8·1 answer
  • One cubic meter of an ideal gas at 600 K and 1000 KPa expand to five times its initial volume as follows:
    11·1 answer
  • What is the net ionic equation for AgNO3 and Na2CO3
    11·1 answer
  • How many molecules are in
    14·1 answer
  • Predict the reactants of this chemical reaction.<br><br> products: KClO4 + H2O <br> reactants: ?
    11·1 answer
  • Compared to water, metals heat up faster because they have
    9·1 answer
  • A substance is a base if it has a pH value greater than___<br>PLEASE ANSWER ASAP ​
    8·1 answer
  • Which of the following is a balanced equation?<br><br>Select one:<br>a. A<br>b. B<br>c. C<br>d. D​
    7·2 answers
  • What is the difference between ethanol and methanol.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!