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elena55 [62]
2 years ago
6

The first strings of holiday lights were manufactured as series circuits. Which explains why this method is no longer used? A. I

n order for a series circuit to remain closed, enabling electrons to flow, all lights must work. B. In a series circuit, if all lights work the circuit remains open, but if one burns, it closes the circuit. C. Lightbulb manufacturers stopped making lightbulbs that could be wired in series. D. Series circuits require more wire to keep electrons flowing between lightbulbs.
Chemistry
1 answer:
user100 [1]2 years ago
3 0
B because once the circuit is burned the lights will all go of
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Use the reaction N2(g) + 3H2(g) 2NH3(g) to answer the following questions
Veronika [31]

Answer:

K

C

=

[N

2

][H

2

]

3

[NH

3

]

2

N

2

+3H

2

⇌2NH

3

=

(1.5×10

−2

)(3×10

−2

)

3

(1.2×10

−2

)

2

=

1.5×10

−2

×27×10

−6

1.44×10

−4

=

40.5×10

−4

1.44

=0.035×10

4

5 0
2 years ago
Photosynthesis can be represented by6CO2(g)+6H2O(l)⇌C6H12O6(s)+6O2(g)Which of the following will be false when the photosynthesi
denis-greek [22]

Answer:

The concentration of O2 will begin decreasing and The concentrations of CO2 and O2 will be equal.

Explanation:

Equilibrium occurs when the velocity of the formation of the products it's equal to the velocity of the formation of the reactants, thus the concentrations of the compounds remain constant.

Analyzing the information and the reaction given, we can notice that in equilibrium the rate (velocity) of formation of O2 (product) is equal to the rate of formation of CO2 (reactant).

As the CO2 and H2O are placed in the reaction, the Le Chateliêr's principle states that the equilibrium must shift to reestablish the equilibrium, thus, they must be consumed, and the concentration of O2 must increase.

As state above, in equilibrium, the concentrations didn't change, thus, the concentrations of CO2 and O2 will not change.

The concentrations of CO2 and O2 depends on the rate of the reaction and the initial quantities presented, so it's not possible to affirm they'll be equal.

8 0
3 years ago
22. pH is a measure of ______________.
just olya [345]
22 is a
23 is d
24 is c
I believe the answers are correct.
6 0
3 years ago
A low level of carbon dioxide labeled with 14C is accidentally released into the atmosphere surrounding industrial workers as th
ivann1987 [24]

Answer:

D) One half of the carbon atoms of newly synthesized acetyl CoA.

Explanation:

It will be radioactively labeled because Malonyl CoA which contains 3 Carbon molecule is synthesized from Acetyl CoA which has 2 Carbon molecule.

This happens with the addition of ‘CO2’ with the help of the enzyme called acetyl CoA carboxylase.

7 0
3 years ago
The average volume of a cotton ball is about 5.50 mL. If the mass of the cotton ball is 8.53 g, what is the density of cotton?
s344n2d4d5 [400]

Answer:

Explanation:

5.5 I believe.

6 0
3 years ago
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