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Bogdan [553]
4 years ago
10

??? I know it's hard to make out but please help xx15 points

Chemistry
1 answer:
baherus [9]4 years ago
7 0
Answer is C. 2, 3 and 5 shows how as the number of carbon increase,  butane, pentane and hexane (4,5 and 6 carbons) the octane number does decrease
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What is the difference between a mixture, a solution, and a pure substance?
vichka [17]
A mixture is a compound of two or more substances a pure substance is only made of one kind of atom and a solution is composed of a liquid substance made of two or more types of atoms
4 0
3 years ago
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What is an action citizens can take to prevent energy waste?
topjm [15]

Answer:

Turning the lights off when they're not needed.

3 0
3 years ago
Given the following equation,, how many moles of water will be produced when 12 moles of ethane (C2H6) are burned?
VARVARA [1.3K]

Answer: 36 mol H2O (l)

Explanation:

Let's use stoichiometry to solve this problem.

12 mol C2H6 * (6 mol H2O / 2 mol C2H6) = 36 mol H2O

Hope this helps!

6 0
3 years ago
Pls help me out with this question!
jeka94
At STP, copper (Cu) would be the only substance here that will exist in the solid state.
4 0
3 years ago
2H2 + O2 -> 2H20
irina [24]

Answer:

                    144.08 g of H₂O

Explanation:

                     The balance chemical equation for the synthesis of water is as follow;

                                           2 H₂ + O₂ → 2 H₂O

Step 1: <u>Find out moles of H₂O produced as;</u>

According to balance chemical equation,

                    1 mole of O₂ produced  =  2 moles of H₂O

So,

                 4 moles of O₂ will produce  =  X moles of H₂O

Solving for X,

                    X =  4 mol × 2 mol / 1 mol

                    X  =  8 moles of H₂O

Step 2: <u>Calculate Mass of H₂O as;</u>

                 Mass  =  Moles × M.Mass

                 Mass  =  8 mol × 18.01 g/mol

                 Mass  = 144.08 g of H₂O

6 0
3 years ago
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