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
damaskus [11]
4 years ago
15

A 50-g sample contains 32.1 g of oxygen 2 g of hydrogen and 15.9 g of carbon

Chemistry
2 answers:
Oksana_A [137]4 years ago
3 0

Answer:

i need more to solve this

Explanation:

Alborosie4 years ago
3 0

Options for full question:

(A) % oxygen is 32.1%

(B) % hydrogen is 4%

(C) total percent composition of all elements is approximately 100%

(D) % carbon is 15.9%

Answer:

Options B and C

Explanation:

Information Given;

Mass of sample - 50g

Mass of Oxygen - 32.1g

Mass of Hydrogen - 2g

Mass of Carbon - 15.9g

The percentage composition of an element in a compound is the mass percentage of the element present in the compound. It tells the mass percentage of each element present in a compound.

The formular is given as;

Percentage composition = (Mass of element / Mass of compound) * 100

For oxygen;

Percentage Composition = (32.1 / 50) * 100 = 0.642 * 100= 64.2%

For Hydrogen;

Percentage Composition = (2 / 50) * 100 = 0.04 * 100= 4%

For Carbon;

Percentage Composition = (15.9 / 50) * 100 = 0.318 * 100= 31.8%

Total percentage composition of all elements = 4% + 31.8% + 64.2% = 100%

Based on this,

Option A is incorrect

Option B is Correct.

Option C is Correct.

Option D is incorrrect

You might be interested in
What is the organelle that packages and releases materials other parts of the cell?
VARVARA [1.3K]
The vacuoles are the answer
7 0
4 years ago
216 grams of carbon 36 grams of hydrogen and 288 grams of oxygen whats the empirical formula
schepotkina [342]
Divide each wight by the  relative atomic mass

C = 216 / 12 =  18
H = 36 / 1 = 36
O = 288/16 = 18

Ratio of C:h:O = 1:2:1

Empirical formula is CH2O   Could be formaldehyde HCHO.
4 0
3 years ago
2. Zn + HCI. ZnCl2 + H2<br><br>what reaction is this ​
steposvetlana [31]

Answer: Type of Chemical Reaction: For this reaction we have a combination reaction. Balancing Strategies: When we add zinc to hydrochloric acid we end up with zinc chloride, a salt, and hydrogen gas. This reaction is actually a good way to make hydrogen gas in the lab.

5 0
3 years ago
Why is a phenol more acidic than a regular alcohol? Group of answer choices
Aleks [24]

Answer:

a.Phenols have the ability to spread out the negative charge that forms.

Explanation:

This happens because of  the aromatic ring the phenols have. When loosing the proton, the anion formed have different resonance isomers due to the double bonds in the aromatic ring. This resonance makes the anion more stable and prevents the reaction going backwards.

On the other hand, regular alcohol doesn't have resonace and the reaction of loosing the proton goes leftward and righward: is in equilibrium.

That equilibrium decreases the acidity of the alcohol.

3 0
4 years ago
As you move from left to right across the periodic table elements ?
Sidana [21]

Explanation:

Quite a number of properties varies across a period. Some remains constant whereas others decreases.

As one moves from left to right;

  • The energy level remains the same.
  • The ionization energy increases progressively as a result of increasing nuclear charge.
  • Electron affinity increases from left to right.
  • Electronegativity increases.
  • Electropositivity decreases.

learn more:

Periodic table brainly.com/question/2014634

#learnwithBrainly

6 0
3 years ago
Other questions:
  • Part A The reaction A(aq)⇌2B(aq) is performed at two different temperatures and the equilibrium constant determined. At temperat
    6·1 answer
  • On a globe the equator is the
    9·1 answer
  • “The element vanadium is a solid at room temperature, and its density is 6110 kilograms per meter cubed. Its melting point is 19
    8·2 answers
  • Which of the following pairs of elements is most likely to form an ionic bond?
    12·1 answer
  • I NEED HELP ILL GIVE BRAINLIST Which type of circuit would be best to use for lights used for decorations?
    10·1 answer
  • Is cell membrane a plant or animals cell
    13·1 answer
  • Construct the inequality for the following cases.
    7·1 answer
  • B. Organic sedimentary rock
    6·1 answer
  • Please help with the attached photo, please explain each. thank you ​
    8·2 answers
  • Which particles that make up an atom are involved in nuclear reactions?.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!