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
Kamila [148]
3 years ago
10

PLEASE HELP!

Chemistry
2 answers:
grandymaker [24]3 years ago
4 0

Answer:6,985.008

Explanation:

so the hear formula is mass times specific heat times change in temperature (kelvin) so what i did was got the change in temperature (41.4 K) and multiplied that times 2.22 J/(g•K)and multiplied that by 76 grams of Octane to get the Answer (not in scientific notation)

pogonyaev3 years ago
3 0

Answer:

Q = 2.60 • 10^{3} J

Explanation:

Our specific heat capacity equation is:

Q = mC∆T

Q is the energy in joules.

m is the mass of the substance.

∆T is the temperature chance.

Let's plug in what we know.

  • We have 76.0 g of octane
  • The specific heat capacity of octane is 2.22 J/(g•K)
  • The temperature increases from 10.6º to 26.0º (a 15.4º increase)

Q = 76.0(2.22)(15.4)

Multiply.

Q = 2598.288

We want three significant figures.

Q = 2.60 • 10^{3}

or

Q = 2590 J

Hope this helps!

You might be interested in
What are the procedures for performing an acid property test
Bond [772]

Answer:

In the context of transaction processing, the acronym ACID refers to the four key properties of a transaction: atomicity, consistency, isolation, and durability. Atomicity. All changes to data are performed as if they are a single operation

8 0
3 years ago
Which formula represents hydrofluoric acid?<br> HFO<br> H2F<br> HFO 4<br> HF
natulia [17]

Answer:

it's HF

Explanation:

3 0
3 years ago
Read 2 more answers
How many electrons can the n=4 shell hold?<br> a. 8b.16c.32d.64?
ra1l [238]
The maximum the fourth shell can have is 32.
6 0
3 years ago
Read 2 more answers
How many moles are in 12 grams of NH3?​
aleksklad [387]

Answer:

molecular weight of NH3 or grams This compound is also known as Ammonia. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles NH3, or 17.03052 grams.

8 0
3 years ago
Calculate the energy of a photon with a frequency of 9.78 x 1021 Hz.
Alex_Xolod [135]

Answer:

9.98538 kilohertz

Explanation:

젠장젠장

8 0
3 years ago
Other questions:
  • Which statement is true for a cooling curve?
    9·2 answers
  • How many moles of oxygen are present in 33.6l of the gas at 1atm and 0c
    13·1 answer
  • A gas occupies 480 L at 315K. Find its volume at 345K. You must show all of your work to receive credit. Be sure to identify whi
    12·1 answer
  • Consider a cloudless day on which the sun shines down across the United States. If 2014 kJ of energy reaches a square meter( m 2
    6·1 answer
  • In caves, dripping groundwater containing calcium bicarbonate can form stalactites and stalagmites. When the water is exposed to
    8·1 answer
  • The Safe Drinking Water Act (SDWA) sets a limit for mercury-a toxin to the central nervous system-at 0.002 mg/L. Water suppliers
    8·1 answer
  • For each of the following, use the periodic table to determine the number of valence electrons in an atom of the element.
    14·1 answer
  • Cuales son las Desventajas de la radioactividad en la industria?Ayudarme porfa no encuentro nada importante
    8·1 answer
  • Which substance is a mixture?<br> table salt<br> gasoline<br> aluminum<br> carbon dioxide
    15·2 answers
  • Which describes a characteristic of water that is responsible for frost wedging? (1 point) O Water expands as it freezes O Water
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!