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
Papessa [141]
3 years ago
6

Which of the following statements is/are correct?

Chemistry
1 answer:
-Dominant- [34]3 years ago
3 0

Answer:

The correct statement is;

(B) Only II

Explanation:

I) The atomic mass unit or amu which is also known as daltons which is defined as 1/12 × the mass of a carbon-12 atom, which is therefore, 1.660538921 × ⁻²⁴ grams

Therefore, the mass of 1 atom of carbon-12 = 12 amu

II) The mass of one mole of oxygen-16 is 16 grams while the mass of one mole of carbon-12 is 12 grams

The mass of 4 atoms of carbon 12 = 4 × 12 amu = 48 amu

The mass of 1 atom of oxygen-16 = 15.99491461956 amu

Therefore, the mass of 3 atoms of oxygen-16 = 3 × 15.99491461956 = 47.9847438587 amu ≈ 48 amu

Therefore only II is correct.

You might be interested in
What elements make up molecules make up molecules of sugar
Anna35 [415]
C12H22O11 aka carbon, hydrogen, and oxygen
6 0
3 years ago
Read 2 more answers
Strontium oxide + ? =<br>stronium chloride​
White raven [17]

Answer:

strontium oxide + hydrochloric acid (HCL) =   strontium chloride​

8 0
3 years ago
The model shown in the diagram describes how the tongue works. When a red block is placed into a the correctly shaped hole, the
rosijanka [135]

Answer:

d and d

Explanation:

6 0
4 years ago
The fact that same molecules of matter have been around for years is supported by​
Elza [17]

Answer:

The law of definite proportions

Explanation:

The law of definite proportions states that atoms combine in a molecule in a specific molar ratio or specific stoichiometry. For example, it's proved that regardless of the quantity we take, two hydrogen atoms always combine with one oxygen atom to form a water molecule.

Similarly, ionic substances follow the same pattern. Since the net charge of ionic salts should be equal to 0 and each element has a definite number of valence electrons in its shell all the time, the ions combine in a way, so that cations balance the charge of anions.

Essentially, the law of definite proportions is applicable and will be applicable in the future, since we know that each element has a fixed number of valence electrons in its ground state.

6 0
3 years ago
It has been proposed that North America is moving west at about 2 cm per year. How many kilometers would it move in 5,000 years?
andriy [413]
Well it would move 10,000cm so converting that into km would be it would move 0.1km 
3 0
3 years ago
Other questions:
  • What causes water molecules to be attracted to each other?
    10·2 answers
  • What energy is needed to make evaporation happen
    15·1 answer
  • Which of these gives the best indication that a health service is based on pseudoscience?
    10·2 answers
  • Convert 512 kilograms to milligrams.<br><br> 0.000512<br> 0.512<br> 512,000<br> 512,000,000
    13·2 answers
  • Through the process of photosynthesis, _ energy is transformed into _ energy
    10·2 answers
  • Identify the items in the list below that are examples of matter. Check all that apply
    11·2 answers
  • A chemist has 2.0 mol of methanol (CH3OH). The molar mass of methanol is 32.0 g/mol. What is the mass, in grams, of the sample?
    7·2 answers
  • Identify the molecules or ions below as Lewis acids, Lewis bases, or neither. If there is more than one possible site in the mol
    8·1 answer
  • Which of these correctly lists the stages of development of the inner planets?
    7·2 answers
  • End the name of the second element with the suffix _____.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!