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Alexxandr [17]
3 years ago
9

Which statement about acids is true?

Chemistry
1 answer:
Leni [432]3 years ago
6 0

Answer:

weak acids have a pH of less than 2

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Before we can use this equation for
AlexFokin [52]

Answer:

2C₂H₆ +  [7]O₂     →      [4]CO₂ + [6]H₂O

Explanation:

Chemical equation:

C₂H₆ +  O₂     →      CO₂ + H₂O

Balanced chemical equation:

2C₂H₆ +  7O₂     →      4CO₂ + 6H₂O

Step 1:

2C₂H₆ +  O₂     →      CO₂ + H₂O

Left hand side                      Right hand side

C = 4                                     C = 1

H = 12                                    H = 2

O = 2                                     O = 3

Step 2:

2C₂H₆ +  O₂     →      4CO₂ + H₂O

Left hand side                      Right hand side

C = 4                                     C =  4

H = 12                                    H = 2

O = 2                                     O = 9

Step 3:

2C₂H₆ +  O₂     →      4CO₂ + 6H₂O

Left hand side                      Right hand side

C = 4                                     C =  4

H = 12                                    H = 12

O = 2                                     O = 14

Step 4:

2C₂H₆ +  7O₂     →      4CO₂ + 6H₂O

Left hand side                      Right hand side

C = 4                                     C =  4

H = 12                                    H = 12

O = 14                                     O = 14

3 0
3 years ago
Which of the following is an example of homeostasis? (2 points) Humans inhale when they need oxygen. Humans choose their friends
notka56 [123]
I think it’s humans inhale oxygen because that would keep the body stable which is what homeostasis is
3 0
3 years ago
Molecular bromine is 24 percent dissociated at 1600 k and 1.00 bar in the equilibrium br2 (
dlinn [17]
Br2 == 2Br

24% dissociated => n total moles, 0.24 mol*n of Br, and 0.76*n mol of Br2

=> partial pressure of Br, P Br = 0.24 bar, and
     partical pressure of Br2, P Br2 = 0.76 bar

kp = (P Br)^2 / P Br2 = (0.24)^2 / 0.76 = 0.0758


3 0
3 years ago
If 1.50 μg of co and 6.80 μg of h2 were added to a reaction vessel, and the reaction went to completion, how many gas particles
Vlada [557]
To determine the number of gas particles in the vessel we add all of the components of the gas. For this, we need to convert the mass to moles by the molar mass. Then, from moles to molecules by the avogadro's number.

1.50x10^-6 ( 1 / 28.01) (6.022x10^23) = 3.22x10^16 molecules CO


6.80x10^-6 ( 1 / 2.02) (6.022x10^23) = 2.03x10 18 molecules H2

Totol gas particles = 2.05x10^18 molecules

6 0
3 years ago
Read 2 more answers
How much water has to be evacuated from 250ml of 1M Ca(OH)2 to make it 3M​
lorasvet [3.4K]

Answer:

ERROR

Explanation:

Answer could not be show due to technical difficulties

6 0
3 years ago
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