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
Ostrovityanka [42]
2 years ago
10

How much heat (in Joules) is needed to raise the temperature of 257g of ethanol (cethanol=2.4 J/g°C) by 49.1°C?

Chemistry
1 answer:
Sonbull [250]2 years ago
8 0

Answer:

Q = 30284.88 j

Explanation:

Given data:

Mass of ethanol = 257 g

Cp = 2.4 j/g.°C

Chnage in temperature = ΔT = 49.1°C

Heat required = ?

Solution:

Specific heat capacity:

It is the amount of heat required to raise the temperature of one gram of substance by one degree.

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

Now we will put the values in formula.

Q = 257 g× 2.4 j/g.°C × 49.1 °C

Q = 30284.88 j

You might be interested in
Is backbonding is possible in BF4- ? If no then why?
Rudik [331]

Answer:

No, because Flourine can only form 1 bond, thus backbonding is not obtainable

4 0
2 years ago
During the reaction of 2,4-dinitrofluorobenzene with methoxide in methanol it was observed that it occurs at a significantly hig
Pachacha [2.7K]

Answer:

Explanation:

your not so smart

3 0
2 years ago
A 8.00 L tank at 26.9 C is filled with 5.53 g of dinitrogen difluoride gas and 17.3 g of sulfur hexafluoride gas. You can assume
pshichka [43]

Answer:

mole fraction of N_2 O = 0.330

mole of fraction SF_4 = 0.669

PRESSURE OF N_2 O = 39127.053 Pa

pressure of SF_4 = 792126.36

Total pressure   = 118253.413 Pa

Explanation:

Given data:

volume of tank 8 L

Weight of dinitrogen difluoride gas 5.53 g

weight of sulphur hexafluoride gas 17.3 g

Amount of N_2 O = \frac{5.53}{14*2 + 16} = 0.1256 mol

amount of SF_4 = \frac{17.3}{32.1 + 19*4} = 0.254 mol

mole fraction of N_2 O = \frac{0.1256}{0.1256 + 0.254} = 0.330

mole of fractionSF_4 = \frac{0.254}{0.1256 + 0.254} = 0.669

PV = nRT

P of N_2 O = \frac{0.1256 *8.31 (273 + 26.9}{0.008} = 39127.053 Pa

mole of SF_4=\frac{0.254 *8.31*(273+26.9)}{.008} = 79126.36 Pa

Total pressure  = 39127.053 + 79126.36 = 118253.413 Pa

6 0
3 years ago
. Who was the scientist responsible for the laws of motion?
Gennadij [26K]

Newton was the scientist

4 0
2 years ago
Read 2 more answers
Help please due today
Usimov [2.4K]
The one abt respiration the answer is the first one and circulatory system is the last one that says “delivery molecules …”
3 0
2 years ago
Read 2 more answers
Other questions:
  • I WILL MARK BRAINLIEST
    12·1 answer
  • What are the four states of matter and explain them
    14·1 answer
  • The mass of a 50-mL volumetric flask is 40.638 g. After adding 15.0 mL of 95% ethanol and adding enough water to complete the vo
    14·1 answer
  • Write the chemical equations for each of the reactions described below:
    14·1 answer
  • Scientists notice that many fish are dying in a local lake. Which onsite water quality data would they most likely gather to det
    13·1 answer
  • Seawater is an example of a _______ solution
    9·1 answer
  • What two forces act in the nucleus to create a 'nuclear tug-of-war'?
    7·1 answer
  • For fun<br><br> need full details to win<br> would you rather be a man or a women and why
    5·2 answers
  • The transmission of thermal energy that is caused by the flow of a fluid’s particles. It can only occur with liquids and gases i
    14·1 answer
  • What is the percent of oxygen in H2O2?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!