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
Zigmanuir [339]
3 years ago
7

Help me!I need some quick answers pls​

Chemistry
1 answer:
Nana76 [90]3 years ago
8 0

Explanation:

please mark me as brainlest and follow me

You might be interested in
What mass is 8.9 moles of Ca?<br> 0.22<br> mole(s)<br> 8.9 moles of Ca x<br> grams<br> 8.9<br> grams
iren2701 [21]
Can you restate the questions again ?
4 0
3 years ago
Part a use these data to calculate the heat of hydrogenation of buta-1,3-diene to butane. c4h6(g)+2h2(g)→c4h10(g)
Reptile [31]

<u>Answer:</u> The heat of hydrogenation of the reaction is coming out to be 234.2 kJ.

<u>Explanation:</u>

Enthalpy change is defined as the difference in enthalpies of all the product and the reactants each multiplied with their respective number of moles. It is represented as \Delta H

The equation used to calculate enthalpy change is of a reaction is:

\Delta H_{rxn}=\sum [n\times \Delta H_{(product)}]-\sum [n\times \Delta H_{(reactant)}]

For the given chemical reaction:

C_4H_6(g)+2H_2(g)\rightarrow C_4H_{10}(g)

The equation for the enthalpy change of the above reaction is:

\Delta H_{rxn}=[(1\times \Delta H_{(C_4H_{10})})]-[(1\times \Delta H_{(C_4H_6)})+(2\times \Delta H_{(H_2)})]

We are given:

\Delta H_{(C_4H_{10})}=-2877.6kJ/mol\\\Delta H_{(C_4H_6)}=-2540.2kJ/mol\\\Delta H_{(H_2)}=-285.8kJ/mol

Putting values in above equation, we get:

\Delta H_{rxn}=[(1\times (-2877.6))]-[(1\times (-2540.2))+(2\times (-285.8))]\\\\\Delta H_{rxn}=234.2J

Hence, the heat of hydrogenation of the reaction is coming out to be 234.2 kJ.

4 0
3 years ago
When coke burns in air then evolved gas is​
Arturiano [62]

Answer:

Explanation:

Carbon (coke) burns in air to form carbon dioxide gas.

(i) C(s) + O2 ↑= CO2 ↑

7 0
3 years ago
Ava’s best friend has an indoor cat. Ava notices that she sneezes every time that she visits her friend. Ava suspects that she i
zlopas [31]

Answer:

I say for her to test her suspicion by going to see an allergist to diagnose the allergy.

7 0
3 years ago
Explosive volcanic eruptions will hurl: hot cinders volcanic bombs lava pebbles large rocks all of the above
andreev551 [17]
The answer is all of the above
8 0
3 years ago
Read 2 more answers
Other questions:
  • A 3.0 L solution contains 73.5 g of H2SO4. Calculate the molar concentration of the solution.
    7·1 answer
  • What represents the different forms of electromagnetic radiation
    6·1 answer
  • Convert 13,400 m to km.
    8·2 answers
  • Lipoamide is a covalently attached coenzyme that plays a key role in several decarboxylase reactions, including glycine decarbox
    7·1 answer
  • An ionic compound whose aqueous solution conducts an electric current is called a(n) ______________.
    6·2 answers
  • What are some elements that can exist in room temperature?
    13·1 answer
  • In what way do scientists think differently about rainbows than most people?
    8·2 answers
  • Alguien me puede hacer el favor de ayudarme con estos 3 ejercicios de balanceo de ecuaciones por oxido reducción por favor 1. Fe
    10·1 answer
  • A solution is 12.5% Na3PO, by mass. How many grams of Na3PO4
    12·1 answer
  • Can grasshoppers fly?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!