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
DENIUS [597]
3 years ago
6

Which mathematical statement correctly relates qsys and qsurr? A. qsys = qsurr B. qsys < qsurr C. qsys > –qsurr D. qsys =

–qsurr
Chemistry
1 answer:
tatiyna3 years ago
4 0

Answer:

  • <u><em>Option D. qsys = - qsurr</em></u>

Explanation:

The symbol q is used to denote heat energy.

Considering positive the heat absorbed and negative the heat released:

  • <em>qsys</em> is the heat absorbed by the systme

  • <em>qsurr</em> is the heat absorbed by the surroundings

When the system does not do work on or receive work from the surroundings, the first law of thermodynamics states that:

  • <em>qsys </em>+ <em>qsurr</em> = 0

From which:

  • <em>qsys = - qsurr ← </em>answer

That is the option D.

That means that, the heat abosorbed by the system (if <em>qsys</em> is positive) equals the heat released by the surroundings, or the heat released by the system (if <em>qsys</em> is negative) equals the heat absorbed by the surroundings.

You might be interested in
The phases of the moon are caused by the changing positions of the Earth and the Moon in relation to the Sun.
Misha Larkins [42]
I do believe the answer would be B. the flashlight represents the sun, the basketball represents the earth and the smaller softball would be the moon.

hope this helps
7 0
3 years ago
Read 2 more answers
How many atoms are found in 4.75 moles of Fe?
aliya0001 [1]

Answer:

The answer to your question is below

Explanation:

a)

Number of atoms = ?

moles of Fe = 4.75

-Use proportions to solve this problem

                            1 mol of Fe --------------------- 6.023 x 10²³ atoms

                          4.75 moles  ---------------------  x

                            x = (4.75 x 6.023 x 10²³) / 1

                            x = 2.86 x 10²⁴ / 1

  Number of atoms = 2.86 x 10²⁴

b)

Number of moles = ?

moles of 1.058 moles of H₂O

I think this question is incorrect, maybe you wish to know the number of atoms or grams of H₂O.

c)

Number of atoms = ?

moles of Fe = 0.759

                       1 mol of Fe ------------------ 6.023 x 10²³ atoms

                       0.759 moles ---------------  x

                        x = (0.759 x 6.023 x 10²³) / 1

                        x = 4.57 x 10²³ / 1

Number of atoms of Fe = 4.57 x 10²³ atoms

d)

Number of molecules = ?

moles of H₂O = 3.5 moles

                          1 mol of H₂O ------------------ 6.023 x 10²³ molecules

                         3.5 moles       ------------------   x

                          x = (3.5 x 6.023 x 10²³) / 1

                          x = 2.11 x 10²⁴ molecules

Number of molecules = 2.11 x 10²⁴                                                                        

7 0
4 years ago
PLEASEEEEE HELP MATH EXPERTS<br><br> What is the value of x?
diamong [38]
X=107 because the sides of a hexagon must add up to 720
6 0
3 years ago
Suppose that CO2 in the atmosphere was held at a constant, natural level for a few thousand years. Then, CO2 was added to double
jasenka [17]

Answer: Temperature before the increase in CO_2 was a few degrees lower than temperature after the increase.

Explanation:

According to Charle's Law which states that The volume of gas is directly proportional to the temperature of the gas, when pressure is kept constant.

(Volume)\propto (Temperature)

\frac{volume}{temperature}=constant (At constant Pressure)

With the increase in level CO_2 in atmosphere the increase in temperature of the atmosphere will be observed.

Hence, temperature before the increase in CO_2 was a few degrees lower than temperature after the increase.

7 0
3 years ago
Name an element with ll protons
romanna [79]

Answer:

the answer is helium but more of then but for now use helium

3 0
3 years ago
Other questions:
  • Cobalt, a transition metal, forms both the Co2+ and Co3+ ions. Which of the following are the correct formulas and names for the
    9·1 answer
  • A banana can ripen sitting on the kitchen counter. Is this a physical or chemical property
    15·2 answers
  • Find the mass in grams of 2.65 x 10^24 molecules of cl2
    10·1 answer
  • Can someone help please
    9·1 answer
  • A student has two solutions of a substance;Solution-1:25M , 400ml and Solution-2:30M , 300M. What is the molarity of the final s
    14·1 answer
  • A student mixes two solutions together. One is believed to be HI, the other is believed to be HNO3. A precipitate forms. Believi
    13·1 answer
  • 2.Identify the product based on the given features.
    8·1 answer
  • Which stage of the cell cycle usually takes the longest?
    5·1 answer
  • Give two different conditions under which long chain hydrocarbons may be cracked.​
    6·1 answer
  • Write the ion symbol for an atom with the given number of protons and electrons.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!