Pentane, C5H12, will react as shown below:C5H12(l) + O2 --- CO2 +_____ H2O

H20(g)

1. Balance the equation above by putting coefficients into each blank space.

1C5H12+ 8O2----- 5CO2+ 6 H2O (this is what I got)

2. How many atoms of oxygen are in 144 grams of pentane?

step 1: 144g of C5H12(1mole/72.17)= 1.995moles of C5H12
step 2: 1.995moles of C5H12(8moles of O2/1mole of C5H12)= 15.962 moles of O2
step 3: 15.962 moles of O2(6.0210^23 atoms of O2/1mole of O2)= 9.60910^24 atoms of O2 (I don't know if I did this right)

3. How many atoms of oxygen are in 192 grams of carbon dioxide gas?

step 1: 192 grams of CO2 (1mole of CO2/44.01grams of CO2)= 4.363 moles of CO2
step two: 4.36moles of CO2* ( 1 mole of O2/1mole of CO2)=
step 3: 4.363* (6.0210^23) = 2.62710^24 atoms of O2 (I don't know if this is correct.

4. A) CIRCLE ONE: True or False:

reactant you begin with fewer grams of is your limiting reactant.

B) If 32 g of oxygen gas and 32 g of pentane are combined, how much water will be produced, in moles? (Use your reaction from the top of the first page)

NEED HELP ASAP THANK YOU!!!

Answers

Answer 1

Answer: 1) That looks right

2) Step 1: Moles=Mass/Mr, so it's 144/72= 2mol
Step 2: Stoichiometry means the ratio of oxygen to pentane is 1:8 so moles of oxygen is moles of pentane times 8. 2*8=16mol of oxygen
Step 3: 16= 9.6*10^24

3) The ratio of oxygen to carbon in CO2 is 1:2
so it's 192/3 = 64
64*2=128g
Moles = Mass/Mr = 128/32 = 4mol = 2.41*10^24 atoms of oxygen
Basically you needed to work out the mass of oxygen using ratios before using a moles equation instead of just working with moles

4) True

5) 1C5H12+ 8O2----- 5CO2+ 6 H2O
32g 32g

Moles of oxygen = Mass/Mr = 32/32= 1mol so you'd need 0.125mol of pentane to react fully
Moles of pentane= Mass/Mr = 32/72=0.4mol so you'd need 3.2mol of oxygen to react fully

This makes oxygen the limiting factor, because you need more of it to react fully with the pentane, so we use oxygen

Stoichiometry means for every 8mol of oxygen there's 5mol of CO2
So, 1/8*5=0.635mol of CO2

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Answers

The best answer is B. ICl experiences induced dipole-induced dipole interactions. Both iodine and chlorine belongs to the same group of the periodic table. Electronegativity decreases as you go down a group therefore Cl will have a greater attraction with the bond it forms with another atom. Dipole-dipole interactions form between I and Cl. For the Br2 molecule, no dipole occurs because they are two identical atoms. Therefore we will be expecting ICl will have a higher boiling point due to higher binding energy it forms.

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Answers

Gamma rays have the highest energy photons among the options provided.

What are Photons

Photons are packets of energy associated with electromagnetic radiation. The energy of a photon is directly related to its frequency or inversely related to its wavelength. The higher the frequency or the shorter the wavelength, the higher the energy of the photon.

Gamma rays have the highest frequency and shortest wavelength among the given options, which corresponds to the highest energy photons.

Read more on Photons here brainly.com/question/15946945

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gamma rays i think is correct hope this helps

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Answers

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I hope this helps. Let me know if anything is unclear.

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