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
kkurt [141]
3 years ago
14

Which of the following lists only include molecules? He h2o

Chemistry
1 answer:
lbvjy [14]3 years ago
4 0
He is the only one that includes only mollecules
You might be interested in
Given:
bulgar [2K]

Answer:

The combustion of 59.7 grams of methane releases 3320.81 kilojoules of energy

Explanation:

Given;

CH₄ + 2O₂ → CO₂ + 2H₂O, ΔH = -890 kJ/mol

From the combustion reaction above, it can be observed that;

1 mole of methane (CH₄) released 890 kilojoules of energy.

Now, we convert 59.7 grams of methane to moles

CH₄ = 12 + (1x4) = 16 g/mol

59.7 g of CH₄ = \frac{59.7}{16} = 3.73125 \ moles

1 mole of methane (CH₄) released 890 kilojoules of energy

3.73125 moles of methane (CH₄) will release ?

= 3.73125 moles x  -890 kJ/mol

= -3320.81 kJ

Therefore, the combustion of 59.7 grams of methane releases 3320.81 kilojoules of energy

5 0
3 years ago
A sample of water is heated from 60.0 °C to 75.0°C by the addition of 140 j of
kupik [55]

Mass of the water : 2.23 g

<h3>Furter explanation</h3>

Heat

Q = m.c.Δt

m= mass, g

c = heat capacity, for water : 4.18 J/g° C.

ΔT = temperature

Q= 140 J

Δt = 75 - 60 = 15

mass of the water :

\tt m=\dfrac{Q}{c.\Delta T}=\dfrac{140}{4.18\times 15}=2.23~g

5 0
3 years ago
Be sure you have completed Table A by filling in the data. Write a caption for the table. Captions are 2-3 sentences describing
siniylev [52]

Answer:

I like rain. Clouds must be condensing at 100% humidity, the pressure must be low, and the temperature must be above 0 degrees.

Explanation:

Hope this helps!

3 0
2 years ago
Read 2 more answers
To arrive at the number of hydrogen atoms, What can be said about the relationship between the number of hydrogen atoms and the
Semenov [28]

Answer:

nothing shsheysyeggehssl

6 0
3 years ago
From his experiment j.j. Thomson concluded that
iragen [17]
Particles as small as atoms exist.
3 0
3 years ago
Other questions:
  • How are fusion reactions different from fission reactions?
    9·1 answer
  • how long would it take to administer exactly 500 mL of fluid through an IV with a drop factor of 30 gtt/mL if the drip rate is 6
    10·1 answer
  • Does a falcon eat a lizard
    5·2 answers
  • Plzz help me with these questions....!!!
    11·1 answer
  • Identifying characteristics of atoms, using the periodic table, complete the table to describe each atom.
    5·2 answers
  • Sam's father bought Sam a goldfish and a fish bowl. What must Sam put in the fish bowl so that the goldfish will survive?
    11·2 answers
  • Is "A finger got cut off" a inherited or acquired or both.
    11·2 answers
  • 100 points! Report on an element
    10·2 answers
  • How would local residents of a place be affected by changes in the hydrosphere? (please help!!)
    11·2 answers
  • Just write a C.E.R (claim, evidence, reasoning)​
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!