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
miv72 [106K]
3 years ago
15

I need help with the 2nd part first gets brainlist

Chemistry
1 answer:
mixer [17]3 years ago
8 0

Answer:

7. 4H₂O

Elements: Hydrogen, Oxygen

Number of molecules: 4

Number of elements: 8 H, 4 O

Number of Atoms: 12

Explanation:

The elements are determined by the their symbol i.e. H = hydrogen.

The number of molecules is determined by the coefficient ( the number in front of everything, in this case 4).

The number of elements is determined by the coefficient and the subscripts. Multiply the coefficient by the subscript after each element. When there is no subscript, it is equal to 1.  4H₂ = 4x2 = 8;  4O = 4x1 = 4.

The number of atoms is all the individual elements added together. 8+4 = 12.

You might be interested in
What is the mass of kilogram of an object that wileight 50.0 in round your answer to the nearest tenth
ANEK [815]
Your question doesn't make sense
3 0
3 years ago
Which of the following sets of quantum numbers refers to a 4p orbital
Fofino [41]

Answer:

For the 4p orbital, n=4, which is just the energy level of the orbital. All p orbital has an l quantum number equal to 1, so for the 4p orbital, l=1.

Explanation:

4 0
2 years ago
MgO(s) + H2O(l) → Mg(OH)2(aq)
Sedbober [7]
My apologies, I don’t seem to understand the question.
8 0
3 years ago
What is the conjugate base of HC6H6O6-
Grace [21]

Answer:

the conjugate base of the compound is

C6h6O2/6-

Explanation:

subscript

4 0
3 years ago
Electromagnetic waves with the shortest wavelengths and highest frequencies are called​
Feliz [49]

Gamma rays

Explanation:

Every member of the electromagnetic radiation has commensurate amount of energy, wavelength and frequencies.

The electromagnetic waves with the shortest wavelengths and the highest frequencies are the gamma rays.

  • Gamma rays also are the most energetic electromagnetic radiation.
  • The short wavelength of gamma rays suggests that more waves passes with times.
  • It's high frequency shows that a high amount of wave passes through a point at each passing of time.
  • These factors combines to give its high energy. Energy of an electromagnetic radiation is a factor of its wavelength and frequency.
  • Gamma rays are ionizing radiations which causes ionization of gas molecules.

Learn more:

Radiation brainly.com/question/10726711

#learnwithBrainly

4 0
3 years ago
Other questions:
  • Enriched weapons-grade uranium consists of 80% uranium-235 (235.044 amu) and 20% uranium-238 (238.051 amu). what is the average
    5·1 answer
  • Pleas Help!
    15·1 answer
  • Nitrogen atom in ammonia has four identical orbitals in the shape of a pyramid or tetrahedron. Draw an energy level diagram to s
    7·1 answer
  • An object has balanced forces acting on it. Which of the following describes the result these balanced forces have on the object
    15·1 answer
  • Identify all of the electrophilic centers in (r)-(−)-carvone below. select all that apply.
    15·1 answer
  • You heat two substances, A and B. Both substances change color. When cooled, substance A returns to its original color, but subs
    15·2 answers
  • Which of the following enzymes breaks down the "glue" that holds cells together?
    11·1 answer
  • If I know the number of protons an element has do I know what element it is ?
    14·1 answer
  • What does the prefix trans-indicate?
    13·2 answers
  • Witch statement about greenhouse gases is false
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!