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
tatyana61 [14]
2 years ago
9

Help with the 3rd question plslsls I’ll brainlist.

Chemistry
1 answer:
Brilliant_brown [7]2 years ago
4 0

1 - energy 2- heat 3 -plant

You might be interested in
Which organelle would be best represented by a refrigerator because it stores food and water?
Luba_88 [7]
Qwesdfgudfdfdess de afefdfsfwrqdetgr
6 0
3 years ago
The following information is given for benzene, C6H6, at 1atm: boiling point = 80.1 °C Hvap(80.1 °C) = 30.7 kJ/mol specific heat
user100 [1]

<u>Answer:</u> The heat required for the process is 4.24 kJ

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

Given mass of benzene = 24.8 g

Molar mass of benzene = 78.11 g/mol

Putting values in above equation, we get:

\text{Moles of benzene}=\frac{24.8g}{78.11g/mol}=0.318mol

To calculate the enthalpy change of the reaction, we use the equation:

\Delta H_{rxn}=\frac{q}{n}

where,

q = amount of heat absorbed = ?

n = number of moles = 0.318 moles

\Delta H_{rxn} = enthalpy change of the reaction  = 30.7 kJ/mol

Putting values in above equation, we get:

30.7kJ/mol=\frac{q}{0.318mol}\\\\q=(30.7kJ/mol\times 0.318mol)=4.24kJ

Hence, the heat required for the process is 4.24 kJ

6 0
3 years ago
Three chemistry students measured the length of a copper bar. The recorded lengths were 5.05 cm, 5 cm , and 5.1 cm, What is the
Salsk061 [2.6K]
5.05 + 5 + 5.1 = 15.15cm Then you just divide it by the amount of measurements you had like this:15.15 ÷ 3 = 5.04999971cm Then you can just round it to the 3rd figure: 5.05cm < And that's the mean/average length of the bar. :) (Or the one above if you want all of the decimals too) 
3 0
3 years ago
Help me out on this please !!
Tanya [424]

Answer:

hiiiiiiiiiiiiiiiiiiiiiiiiii

6 0
2 years ago
URGENT PLZ HELP
shutvik [7]
I don’t want to be wrong but I’m gonna say 2p
5 0
3 years ago
Other questions:
  • HELP PLEASE!!!! 15 POINTS!!! HELP!!
    13·2 answers
  • As we move from left to right across the periodic table, what is the general trend? A) Atomic radii increase. B) Electronegaviti
    8·2 answers
  • To what category of elements does an element belong if it is a poor conductor of electricity
    13·1 answer
  • HELP ASAP WILL AWARD 60 Points
    15·1 answer
  • Which is the correct answer???????
    6·1 answer
  • Which quantity can be calculated using the equation E = mc2?
    6·2 answers
  • I’m having hard time to understand can someone answer it and explain it
    5·1 answer
  • How many liters of a 3 M NaOH stock solution would you need to make 552 mL of a 105 mM NaOH dilution
    13·1 answer
  • Balance the following equations ___Fe + __O2= ___Fe3O4
    14·1 answer
  • In this experiment the crest of one wave combined with the crest of the second wave to produce _______________.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!