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
dusya [7]
3 years ago
10

Which one is true? Elements in the same row have the same number of:

Chemistry
1 answer:
RideAnS [48]3 years ago
4 0

Explanation:

Elements in same row (i.e, from left to right) have the same number of electron shells.

You might be interested in
What would happen if a roof was made from wool?
vichka [17]

Answer:

B

Explanation:

it will not be waterproof anymore

7 0
3 years ago
THIS NOT MY WORK. its for my sister. HELP HER
Stolb23 [73]

Answer:

Your answer will be b(molten material from the outer core makes its way to the surface of earth)

Explanation:

5 0
3 years ago
Read 2 more answers
Which statement describes an intensive property of matter? <br>​
Pachacha [2.7K]

Answer:

hope it helped you.

Explanation:

The properties of matter that do not depend on the size or quantity of matter in any way are referred to as an intensive property of matter. Temperatures, density, color, melting and boiling point, etc., all are intensive property as they will not change with a change in size or quantity of matter.

5 0
3 years ago
Read 2 more answers
An ideal gas contained in a piston-cylinder assembly is compressed isothermally in an internally reversible process.
Tju [1.3M]

Answer:

a) \Delta S

b) entropy of the sistem equal to a), entropy of the universe grater than a).

Explanation:

a) The change of entropy for a reversible process:

\delta S=\frac{\delta Q}{T}

\Delta S=\frac{Q}{T}

The energy balance:

\delta U=[tex]\delta Q- \delta W

If the process is isothermical the U doesn't change:

0=[tex]\delta Q- \delta W

\delta Q= \delta W

Q= W

The work:

W=\int_{V1}^{V2}P*dV

If it is an ideal gas:

P=\frac{n*R*T}{V}

W=\int_{V1}^{V2}\frac{n*R*T}{V}*dV

Solving:

W=n*R*T*ln(V2/V1)

Replacing:

\Delta S=\frac{n*R*T*ln(V2/V1)}{T}

\Delta S=n*R*ln(V2/V1)}

Given that it's a compression: V2<V1 and ln(V2/V1)<0. So:

\Delta S

b) The entropy change of the sistem will be equal to the calculated in a), but the change of entropy of the universe will be 0 in a) (reversible process) and in b) has to be positive given that it is an irreversible process.

7 0
3 years ago
Consider the reaction.
Stella [2.4K]

Answer:

when the rates of the forward and reverse reactions are equal

Explanation:

In a chemical system, the reaction reaches a dynamic equilibrium when the rate of formation of product equals the rate of formation of reactants. This implies that both the forward and revered(backwards) reaction are occurring at the same rate.

5 0
3 years ago
Other questions:
  • Given that the vapor pressure of water is 17.54 torr at 20 °c, calculate the vapor-pressure lowering of aqueous solutions that a
    6·1 answer
  • What is the shape of pure carbon fullerenes?
    15·1 answer
  • How much heat is evolved in converting 1.00 mol of steam at 140.0 ∘c to ice at -55.0 ∘c? the heat capacity of steam is 2.01 j/(g
    10·1 answer
  • A solution is made by adding 50 grams of gelatin to 400 grams of water. What is the mass % of water in the sample?
    12·1 answer
  • What does the number of protons<br> determine?
    7·1 answer
  • The number of moles in 4.27×10^22 particles of silver is
    5·1 answer
  • which law states that the volume of a given amount of gas is proportional to temperature when pressure and number of moles remai
    8·2 answers
  • What type of molecule is 3-hexyne?
    13·1 answer
  • Need done ASAP HELP MEEE
    13·1 answer
  • How many joules are required to change 40 grams of water to steam at the boiling point?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!