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
RoseWind [281]
3 years ago
10

When a 14.2-g sample of mercury (II) oxide is decomposed into its elements by heating, 13.2 g Hg is obtained. What is the percen

t composition of the compound?
Chemistry
1 answer:
nevsk [136]3 years ago
4 0
Mercury (ii) oxide is made up of mercury and oxygen. The total mass of mercury (ii) oxide is 14.2 g, after decomposition 13.2 g of mercury were formed, therefore the mass of oxygen 1 g (14.2 g -13.2 g).
Percentage of oxygen = (1/14.2)×100 = 7.04%
Percentage of mercury = (13.2/14.2) × 100 = 92.96%
Therefore, percentage composition of the compound, oxygen is 7.04% and mercury is 92.96%.
You might be interested in
the symbol for xenon (xe) would be a part of the noble gas notation for the element antimony. cesium.
trapecia [35]

The symbol for xenon (xe) would be a part of the noble gas notation for the element cesium.

For writing the electronic configuration of any element by using the preceding noble gas configuration, we simply use the symbols of noble gas belongs to the previous period of that particular elements. We can't use the symbol of noble gas of same period from which the element belong.

A is the wrong option because the noble gas in the preceding period to the period from which antimony belongs is krypton.

The actual electronic configuration of antimony is as follow:

[Kr] 4d10 5s2 5p3

B is correct option because the noble gas in the preceding period to the period from which Cesium belongs is Xenon.

The actual electronic configuration of Cesium is as follow:

[Xe] 6s1

Thus, we concluded that the symbol for xenon (xe) would be a part of the noble gas notation for the element cesium.

learn more about Noble gas:

brainly.com/question/2094768

#SPJ4

8 0
1 year ago
4. How might the process of making paper from wood be changed to produce paper that is not acidic?​
kicyunya [14]

Answer:it is sterilized in the process

Explanation:

5 0
2 years ago
A high speed train travels 176 miles in 7 hours. What is the speed of the train
umka21 [38]

Answer:

25 mph

Explanation:

So we have to find the unit rate, or you could use the DTS triangle, but both say you have to divide, so our equation is:

176 ÷ 7 = 25.14

But I'm going to round that

So the train is traveling at 25 mph

hope this helps:/

4 0
2 years ago
PLEASE HELP!
11111nata11111 [884]
The answer is A.......
6 0
3 years ago
How many grams of sodium are in<br> 1.000 mole of sodium?
jolli1 [7]

Answer:

Explanation:

How many atoms are in a 3.5 g sample of sodium (Na)? In this example, multiply the grams of Na by the conversion factor 1 mol Na/ 22.98 g Na, with 22.98g being the molar mass of one mole of Na, which then allows cancelation of grams, leaving moles of Na.

8 0
2 years ago
Read 2 more answers
Other questions:
  • How much does a gold bar wiegh and how much is it wotrth
    11·1 answer
  • How do you differentiate between gas and a vapour ?
    15·1 answer
  • The diagram illustrates photosynthesis.
    11·2 answers
  • how many grams of bromine, br2, are required to react completely with 37.4 grams of aluminum chloride, AlCl3?
    6·1 answer
  • Need this ASAP!
    5·1 answer
  • 2.4 kg convert to cg
    5·1 answer
  • A solution in which the pH is 1.6 would be described as
    7·1 answer
  • How many moles of methane occupy a volume of 2.00 l at 50.0°c and 0.500 atm answer?
    14·1 answer
  • 100 PIONTSSSSS HELP ASAP
    9·1 answer
  • PLEASE HELP?? :|<br> AS SOON AS POSSIBLE!!
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!