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
Verizon [17]
3 years ago
12

Write the overall, balanced molecular equation and indicate which element is oxidized and which is reduced for the following rea

ction. Include phases of matter.
Mg(s) + Cr(C2H3O2)3 (aq)

oxidized: ________

reduced: _________
Chemistry
1 answer:
REY [17]3 years ago
7 0

Explanation:

Mg(s) + Cr(C2H3O2)3 (aq)

Overall, balanced molecular equation

Mg(s) + Cr(C2H3O2)3(aq) --> Mg(C2H3O2)3(aq) + Cr(s)

To identify if an element has been reduced or oxidized, the oxidation number is observed in both the reactant and product phase.

An increase in oxidation number denotes that the element has been oxidized.

A decrease in oxidation number denotes that the element has been reduced.

Oxidation number of Mg:

Reactant - 0

Product - +3

Oxidation number of Cr:

Reactant - +3

Product - 0

Note: C2H3O2 is actually acetate ion; CH3COO- The oxidatioon number of C, H and O do not change.

Oxidized : Mg

Reduced : Cr

You might be interested in
A child picks up a tennis ball tied to the end of a rope. He swings the rope around, over his head, in a circle. Once the ball i
kkurt [141]

Answer:

The ball will fly tangential to the original circle

Explanation:

The image here is missing, however we can still answer to the question.

In fact, the circular motion of the ball when it is tied to the rope is a combination of two separate effects:

1- The centripetal force, in the form of the tension in the rop, that pulls the ball at any time towards the centre of the circular path

2- The inertia of the ball, which tends to continue its motion in a straight direction, tangential to the circle and perpendicular to the direction of the centripetal force

When child let the string go, there is no more tension in the string acting on the ball, and therefore, there is no longer a centripetal force.

As a result, number 1) disappears, and therefore there is only the inertia of the ball that will determine its motion: and therefore, the ball will continue its motion straight in a direction tangential to the original circle.

5 0
3 years ago
8.38e-21 Q^2 -1.07e-23 Q^2 +3.15e+19<br> Solve for Q
GarryVolchara [31]
8.38e -21Q^2 -1.07e -23Q^2 +3.15e +19
= 10.46e -44Q^2 + 19
44Q^2 = 10.46e + 19
Q^2 = 523/2200e + 19/44
Q1= ≈ -1.03828
Q2= ≈ 1.03828
4 0
3 years ago
20 ml of an approximately 10% aqueous solution ofethylamine, ch3ch2nh2, is titrated with 0.3000 maqueous hcl.which indicator wou
S_A_V [24]

phenolphthalein would be most suitable
5 0
3 years ago
What is the word eletrovent
djyliett [7]

Answer:

Explanation:

Electrovalent is a word often associated with chemical bonding in the field of chemistry. It is special type of bond that occurs between metals and non-metals.

These bond types are interatomic interactions occurring between two atoms to ensure that they attain stable configurations.

  • This bond type is also known as ionic bonds.
  • It occurs between two species with a large electronegative diffference i.e one specie is electropositive and the other highly electronegative.
  • The more electropositive specie is metal and it readily loses its valence electrons.
  • The electronegative non-metal gains the electrons and becomes negatively charged.
  • The electrostatic attraction between the metal and non-metals yields the electrovalent bonds.
8 0
3 years ago
Which of the following is not the same as 5.63 grams?<br> 5,630 mg<br> 0.563 hg <br> 0.00563 kg
Lady bird [3.3K]
Units of measure is defined as a the magnitude of a certain quantity. There are a lot of units that we can use for mass. Kilograms, grams, tons, pounds and slugs are some of the examples. There are some units where certain prefixes changes its magnitude. One thousand grams is one kilogram. One thousand mg is one gram. 5.63 grams is 5,630 mg and 0.00563 kg is 5.63 grams. Hence the answer here is 0.563 hg. 
6 0
3 years ago
Read 2 more answers
Other questions:
  • Which process is spontaneous? electrolysis of water into oxygen and hydrogen spreading of a strong fragrance of perfume in a roo
    15·1 answer
  • The use of phenol (carbolic acid) as a wound disinfectant was first practiced by:
    11·1 answer
  • The synthesis of nitrogen trihydride from nitrogen gas and hydrogen gas is shown by which balanced chemical equation?
    7·2 answers
  • How many moles of Au2S3 is required to form 56 grams of H2S at STP?
    8·1 answer
  • So3 +H2so4----H2s2o7????? How??
    9·1 answer
  • The prefix 'kilo-' means a thousand. So a kilo-gram is a thousand grams. 1 kilogram=1,000 grams How many kilograms is 1,008 gram
    9·1 answer
  • A tiny drop of blood can provide DNA for DNA fingerprinting, although the analysis requires much more material than the blood sa
    12·1 answer
  • What is the most appropriate unit of astronomical distance to represent the distance between an earth an orbiting space station
    11·1 answer
  • Select The on that most applys<br><br><br> Will mark brainliest
    7·1 answer
  • Explain why in the early morning just before dawn breaks, the temperature of the air
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!