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
xz_007 [3.2K]
3 years ago
12

PLEASE HELP I HAVE LIMITED TIME!!

Chemistry
1 answer:
n200080 [17]3 years ago
3 0

Answer:

Explanation:

Si tomamos en cuenta el peso molecular del agua, que es equivalente a:

1 Átomo de H₂O

O = 16 gr/mol

H = 1 gr/mol

H₂O = 18 gr/mol

Teóricamente sabemos que en 1 mol de H2O habrá 18 gr.

 

Para obtener los moles presentes en 1 mg de H₂O, (como 1 gr = 1000 mg), decimos:

1 mol H2O …………………………..  18000 mg

       X          ……………………………   1 mg

X = 1 / 18000 = 5,56 X 10⁻⁵ moles de H20

 

Y para obtener la cantidad de moléculas presentes, de acuerdo a los moles, multiplicamos por el número de Avogadro (6,023 X 10²³ moléculas /mol)

Moléculas de H₂O = 5,56x 10⁻⁵ mol x 6,023 x 10²³

Moléculas de H₂O = 3,34488 x10¹⁹ moléculas de H₂O

En el copo de nieve habrá 3,34488 x 10¹⁹ moléculas de H₂O.

Espero que te sirva =)

You might be interested in
Which of these is an example of matter?
wolverine [178]

Answer:

Air

Explanation:

It takes up space/ the rest do not

7 0
3 years ago
Read 2 more answers
Does anyone know how to do this ??
lord [1]

Answer:

Look at your periodic table

Explanation:

It tells you everything like Potasium 1 and 1 ox and 1 hydrogen

7 0
3 years ago
How much time does sugar takes to dissolve in : 1: ice cold water 2: room temperature 3: boiling point
maxonik [38]

Answer:

room temperature

Explanation:

what i think this is the answer do u know ans

5 0
4 years ago
Read 2 more answers
. Guillermo was finding it difficult to walk up the steps to his family’s apartment. His doctor thinks that his cells might not
morpeh [17]

Answer:

Because oxygen is the combustion  fuel and glucose  is the substrate needed for synthesis of energy as ATPs during cellular respiration.Therefore Guillermo lacks enough energy as ATPs in her  body cells, especially skeletal muscles cells to complete the task of ascending the s steps.

For all the mitochondrial in cells(sites of energy production)   to receive needed glucose,and other metabolites needed for  energy synthesis; an efficient transport system is needed, so that  these materials   are available  immediately, in required amount. This system is called circulatory system.

And for the the supply of combustion fuel (oxygen) needed for the completion of the ATP synthesis mechanisms;  respiratory systems which  convey oxygen from the external environments to the circulatory system through breathing mechanisms, for distribution is needed.

Thus the  doctor needs to test both the circulatory and respiratory systems.

Explanation:

4 0
3 years ago
Thomas collected the data in Table 1 to answer a statistical question. Which statistical question does the data in Table 1 answe
Nezavi [6.7K]

Answer:

how tall each sibling is

Explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • Which equation shows conservation of mass and energy for a reaction at 101.3 kpa and 298 k?
    11·2 answers
  • A train travels 74 kilometers in 3 hours, and then 73 kilometers in 2 hours. What is its average speed? km/hr
    11·2 answers
  • Which development was a direct result of the
    14·2 answers
  • READING CHECK
    9·1 answer
  • What is the molecular geometry if you have 3 single bonds and 1 lone pair around the central atom?
    9·1 answer
  • Dana is trying to determine if an unknown sample is a pure substance or not. The sample has a cloudy white color, and it seems e
    14·1 answer
  • If a radio station transmits on AM 610, how many hertz (Hz) is the frequency of the wave? (Remember that kHz = kilohertz.)
    10·1 answer
  • PLEASE HELP ME WITH THIS I ONLY HAVE 8 MINUTES I will give you extra points . NUMBER 6
    10·2 answers
  • Refer to the table . Which plants would most likely be found in the rain forest
    12·1 answer
  • Make a claim for why caco3 reacts more vigorously with hcl than with hc2h3o2
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!