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
VladimirAG [237]
3 years ago
11

At constant volume, the heat of combustion of a particular compound is − 3550.0 kJ / mol. When 1.075 g of this compound ( molar

mass = 154.74 g / mol ) was burned in a bomb calorimeter, the temperature of the calorimeter, including its contents, rose by 4.073 ∘ C. What is the heat capacity (calorimeter constant) of the calorimeter?
Physics
1 answer:
swat323 years ago
6 0

Answer:

C=1,25\cdot 10^{5} kJ/^{\circ}C

Explanation:

First of all let's define the specific molar heat capacity.

C = \frac{-Q}{n\cdot \Delta T} (1)

Where:

Q is the released heat by the system

n is the number of moles

ΔT is the difference of temperature of the system  

Now, we can find n with the molar mass (M) the mass of the compound (m).

n=\frac{m}{M}=6.95\cdot 10^{-3} moles      

Using (1) we have:

C=\frac{-3550}{6.95\cdot 10^{-3} 4.073}

C=1,25\cdot 10^{5} kJ/^{\circ}C

I hope it helps!

You might be interested in
A wheelbarrow is a good example of a second-class lever. True or False
olganol [36]

Answer:

true

Explanation:

a wheelbarrow has its load situated between the fulcrum and the force the wheel Barrow is 2nd class because of its resistance between the force and the axis

3 0
3 years ago
How polar bear can survive in the polar region<br>​
ladessa [460]

Answer:

Hey mate.....

Explanation:

This is ur answer...

<em>Polar bears are well adapted for survival in the Arctic. Their adaptations include: a white appearance - as camouflage from prey on the snow and ice. thick layers of fat and fur - for insulation against the cold.</em>

Hope it helps!

Brainliest pls!

Follow me! ◇

7 0
3 years ago
When turned on, a fan requires 5.0 seconds to get up to its final operating rotational speed of 1200 rpm. a) How large is the fi
vova2212 [387]

Answer:

a)

125.6 rad/s

b)

25.12 rad/s²

Explanation:

a)

t = time required by the fan to get up to final operating speed = 5 sec

w = final operating rotational speed = 1200 rpm

we know that :

1 revolution = 2π rad

1 min = 60 sec

w = 1200\frac{rev}{min}\frac{2\pi rad}{1 rev}\frac{1 min}{60 sec}

w = \frac{1200\times 2\pi }{60}\frac{rad}{s}

w = 125.6 rad/s

b)

w₀ = initial angular speed = 0 rad/s

α = angular acceleration

using the equation

w = w₀ + α t

125.6 = 0 + α (5)

α = 25.12 rad/s²

5 0
3 years ago
Which statement is always false for athletes participating in team sports?
tatyana61 [14]
Which statement is always false for athletes participating in team sports?

Answer: Out of all the options shown above the one that best represents the statement that is alway false for athletes participating in team sports is answer choice C) Conflict resolution is a sign of poor sportsmanship. All the other choices are true when it comes to team sports.

I hope it helps, Regards.
3 0
3 years ago
How do you increase the rate of dissolving ?
Bogdan [553]
To increase the rate of dissolving you can stir the concentration, heat the mixture, or grind the solute.
6 0
3 years ago
Read 2 more answers
Other questions:
  • Find an expression for the acceleration a of the red block after it is released. use mr for the mass of the red block, mg for th
    6·2 answers
  • What mathematical formula correctly expresses the relationship between force, mass and acceleration? A. m = F + a B. F = m / a C
    10·1 answer
  • When work is done on an object, where does the energy used to do the work go?
    5·1 answer
  • The rate which light flows through a given area of space is referred to as ita
    7·1 answer
  • The bases in DNA can be sequenced in an almost infinite number of ways to spell out the "sentence" of a living organism's genome
    6·2 answers
  • Two carts (m1 = m2 = 0.400 kg) are placed on an aluminum track. The first cart is pushed with the initial velocity of 1.5 m/s to
    8·1 answer
  • The voltage across the diode indicates the energy given to charge carriers (electrons and holes, but more about that later in th
    12·1 answer
  • How does running involve science..? please dont copy off of something
    14·2 answers
  • The small spherical planet called "Glob" has a mass of 7.88×10^18 kg and a radius of 6.32×10^4 m. An astronaut on the surface of
    13·2 answers
  • galatics years. the time the solar system takes to circle around the center of mily way galaxy a galatic year is about 230
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!