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
Ne4ueva [31]
3 years ago
11

What is percentage composition?

Chemistry
1 answer:
blondinia [14]3 years ago
7 0

Answer:

The percent composition of a component in a compound is the percent of the total mass of the compound that is due to that component. To calculate the percent composition of a component in a compound: Find the molar mass of the compound by adding up the masses of each atom.

You might be interested in
What's your favorite song ​
Inessa [10]
Run it up by nav and lemonade by dont oliver
3 0
3 years ago
3Fe+4H2O(yields) Fe3O4+4H2. What is the mole ratio of Fe3O4 to Fe?
WINSTONCH [101]

<u>Answer:</u> The correct answer is Option A.

<u>Explanation:</u>

Mole ratio is defined as the ratio between the stoichiometric coefficients of the molecules present in the chemical reaction.

For the given balanced chemical equation:

3Fe+4H_2O\rightarrow Fe_3O_4+4H_2

By Stoichiometry of the reaction:

3 moles of iron metal reacts with 4 moles of water to produce 1 mole of iron oxide and 4 moles of hydrogen gas.

The mole ratio of Fe_3O_4:Fe=1:3

Hence, the correct answer is Option A.

7 0
2 years ago
Read 2 more answers
the atomic mass of an element is A. the amount of electrons the element has B. the number of neutrons an element has C. the numb
vredina [299]
C. the number of protons and neutrons an element has in its nucleus
5 0
3 years ago
A piece of iron is heated to 95.0 celsius and then placed in an insulated vessel containing 250. grams of water at 25.0 celsius.
Nana76 [90]

Answer:

c) 387g

Explanation:

Water;

Mass = 250g

Specific heat = 4.184

Initial Temp, T1 = 25 + 273 = 298K

Final Temp, T2 = 35 + 273 = 308K

Heat = ?

H = mc(T2 - T1)

H = 250 * 4.184 (308 - 298)

H = 10460 J

Iron;

Initial Temp, T2 = 95 + 273 = 368K (Upon converting to kelvin temperature)

Mass = ?

Final Temp, T1 = 35 + 273 = 308

Heat = 10460 (Heat lost by iron is qual to heat gained by water)

Specific heat = 0.45

H = mc(T2-T1)

M = 10460 / [0.45 (308 - 368)]

M = 10460 / 27

M = 387g

7 0
2 years ago
Aqueous solutions of potassium chloride and silver nitrate are mixed.
UkoKoshka [18]

Answer:

Sorry how no this equation guys

6 0
2 years ago
Other questions:
  • In addition to the separation techniques used in this lab (magnetism, evaporation, and filtering), there are other commonly used
    6·1 answer
  • A gas has a volume of 6.46L at 1.06 atm and 77.2°C. What is the volume of the gas (in L) at STP​
    11·2 answers
  • Which of the following contribute(s) to most of the mass of an atom?
    15·2 answers
  • In order to re-create the process of energy production that takes place in the sun, scientists use
    11·2 answers
  • If 55.0 mL of ethanol (density = 0.789 g/mL) initially at 8.0 ∘C is mixed with 55.0 mL of water (density = 1.0 g/mL) initially a
    12·1 answer
  • When does a substance have a definite shape?
    12·1 answer
  • WILL MARK BRAINLIEST!!! MULTIPLE CHOICE
    12·2 answers
  • As human populations grow, it becomes more important to use renewable sources of energy. Which of the following objects uses ene
    6·1 answer
  • 4 and 5 pls and thank uuu
    12·1 answer
  • For each ionic compound formula, identify the main group to which X belongs: (b) X2(SO4)3
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!