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
Sergeeva-Olga [200]
3 years ago
11

What is oxidation number for Mn in Mn2O7 ( sign and number)

Chemistry
2 answers:
Anna11 [10]3 years ago
6 0

Answer : The oxidation number of sulfur (Mn) is, (+7)

Explanation :

Oxidation number : It represent the number of electrons lost or gained by the atoms of an element in a compound.

It is generally written with the sign (+) and (-) first and then the magnitude.

When the atoms are present in their elemental state then the oxidation number will be zero.

The oxidation number of  oxygen (O)  in compounds is usually -2.

The given compound is, Mn_2O_7

Let the oxidation state of Mn be, 'x'

2x+7(-2)=0\\\\2x-14=0\\\\x=\frac{+14}{2}\\\\x=+7

Therefore, the oxidation number of sulfur (Mn) is, (+7)

yKpoI14uk [10]3 years ago
5 0

The oxidation number for Mn in Mn2O7 is +7. The oxidation number of manganese (Mn) in potassium permanganate (KMnO4) is +5. 

You might be interested in
What is the molality of an aqueous KCl solution with a mole fraction of KCl, XKCl = 0.175? (The molar mass of KCl = 74.55 g/mol
NARA [144]

Answer:

The molality of the KCl solution is 11.8 molal

Explanation:

Step 1: Data given

Mol fracrion KCl = 0.175

Molar mass KCl = 74.55 g/mol

Molar mass H2O = 18.02 g/mol

Step 2: Calculate mol fraction H2O

mol fraction H2O = 1 - 0.175 = 0.825

Step 3: Calulate mass of H2O

Suppose the total moles = 1.0 mol

Mass H2O = moles H2O * molar mass

Mass H2O = 0.825 * 18.02 g/mol

Mass H2O = 14.87 grams = 0.01487 kg

Step 4: Calculate molality

Molality KCl = 0.175 / 0.01487 kg

Molality KCl = 11.8 molal

The molality of the KCl solution is 11.8 molal

5 0
3 years ago
This electron cloud model of aluminum has _______ energy levels with _______ electrons on its outer energy level. A) 1, 2 B) 2,
Talja [164]

Answer:

C

Explanation:

Have anice day

7 0
3 years ago
Find the grams in 1.26 x 10^-4 mole of HC2 H3O2
ivolga24 [154]
Molar mass :

HC₂H₃O₂ = 1 + 12*2 + 1 * 3 + 16 * 2 = 60 g/mol

1 mole <span>HC₂H₃O₂ -------------- 60 g
</span>1.26x10-⁴ mole ----------------- mass

mass =  1.26x10-⁴ * 60

mass = 0.00756 g of <span>HC₂H₃O₂</span>

hope this helps!


7 0
3 years ago
How many times of o are there?
lions [1.4K]
I would say 4 but you can figure it out or if you have a parent near by to
3 0
3 years ago
Read 2 more answers
A bulb is added to a circuit. When you place your hand near the bulb, it feels warm. The bulb in the circuit would most accurate
alex41 [277]

Answer:

C energy source

Explanation:

I got this right

8 0
3 years ago
Read 2 more answers
Other questions:
  • What energy conversion occurs when a solar panel uses light to provide power to a house?
    13·1 answer
  • Which of the following is NOT a characteristic of liquids?
    10·1 answer
  • What is the total mass of three diamonds with masses of 14.2 grams, 8.73 grams, and 0.912 grams?
    12·2 answers
  • Problem Page What kind of intermolecular forces act between a formaldehyde molecule and a hydrogen sulfide molecule? Note: If th
    11·1 answer
  • I need help with this worksheet that's my homework, I would need help to do it all
    15·1 answer
  • Please help i dont understand it
    8·2 answers
  • Balance the following equation and determine the coefficients in order
    6·1 answer
  • Imagine cutting a bar of pure gold in half, and then cutting it in half again. Could you divide the gold like this forever?
    11·1 answer
  • Determine the mass of 6.33 mol of iron(II) nitrate.
    10·1 answer
  • Which lists two inorganic substances?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!