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
worty [1.4K]
2 years ago
14

Calculate the percentage of zinc I zncl2

Chemistry
1 answer:
Murrr4er [49]2 years ago
4 0

Answer:

47.8 %

Explanation:

Ar of Zn = 65

Mr of ZnCl2 = 65 + (2 * 35.5)

= 65+ 71

= 136

Percentage Composition

= ( Ar of element × No of atom in formula ) / Mr of compound * 100 %

% composition of Zn = ( 65*1 )/ 136 × 100 %

= 47.7941...

= 47.8 % ( 3 s.f )

You might be interested in
An inventor claims to have developed a new perfume that lasts a long time because it doesn't evaporate. Comment on this claim.
zaharov [31]

Answer:

C

Explanation:

Perfume needs to evaporate in order to smell.  If this perfume didn't evaporate, it would stay as a liquid and never smell.  

It wouldn't be D, as no toxic perfumes is sold.

It's not A because perfume doesn't have to be pressurized in order to not evaporate.

It's not B, as it is a hasty conclusion to the claim.  Plus, if the perfume did have an odor, even while not evaporating, the sales would be low as the product is that good.  

3 0
3 years ago
Which of the following chemical reactions represents an acid-base reaction?
LenKa [72]

Answer:

HBr + KOH -> KBr + H₂O

Explanation:

Acid-base reactions always produce a salt [KBr] and water [H₂O].

5 0
2 years ago
Plz help!<br><br> It takes a car going 40 mph 3 seconds to come to a stop. What is the acceleration?
lana66690 [7]

Answer:

6 second???

Explanation:

Im so sorry if thats wrong!!!!

3 0
3 years ago
Calculate the percentage of all elements in Fel(OH)3
Vsevolod [243]

Answer: 30.06% is your answer.

I hope this helps.

Stay safe and have a good day :D

7 0
3 years ago
Can metals have covalent radius and van der Waal's radius instead of metallic radius?​
romanna [79]

Explanation:

Whether you choose to use van der Waals radii or metallic radii as a measure of the atomic radius, for metals the ionic radius is smaller than either, so the problem doesn't exist to the same extent. It is true that the ionic radius of a metal is less than its atomic radius (however vague you are about defining this).

4 0
3 years ago
Other questions:
  • What is the silver ion concentration in a solution prepared by mixing 369 mL 0.373 M silver nitrate with 411 mL 0.401 M sodium c
    11·1 answer
  • When the highest occupied energy level of an atom is completely full of electrons, the atom is _____________________________?
    9·1 answer
  • A student prepared a stock solution by dissolving 10.0 g of KOH in enough water to make 150. mL of solution. She then took 15.0
    15·1 answer
  • What is a layer of solid of the solid earth<br>​
    9·1 answer
  • Review the PCR (Calvin-Benson-Basham) cycle and the photochemical (light) reactions. If photosynthesizing green algae are provid
    10·1 answer
  • What are elementary particles the make up protons and nuetrons
    7·2 answers
  • What creates Earth's magnetic field? Choose the best answer from the selections below. a the hot, dense ball of solid iron at th
    11·1 answer
  • What is the only intermolecular force present in nonpolar compounds?
    15·1 answer
  • DIRECTION: Supply the missing information about the scientist listed in the graphic
    15·1 answer
  • Which of the following solids would not decompose on heating​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!