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nordsb [41]
3 years ago
5

Luciana explains to Eric how electricity flows in a circuit. Which sentences are a part of her explanation? Select all that appl

y.
A. Without a resistor, electricity cannot flow in a circuit.


B. Without a switch, electricity cannot flow in a circuit.


C. For electricity to flow in a circuit, the circuit must be complete.


D. An insulator such as plastic is needed for electricity to flow in a circuit.


E. A conductor is needed for electricity to flow in a circuit.
Chemistry
2 answers:
Flauer [41]3 years ago
8 0
I’m pretty sure it c hope that helped
victus00 [196]3 years ago
5 0

Answer:

E. A conductor is needed for electricity to flow in a circuit.

Explanation:

Electric current can flow without a resistor, as in short circuit.

A short circuit is an electrical circuit that allows a current to travel along an unintended path with no or very low electrical impedance.

Without a switch, electricity can flow in a circuit, switch is only used to close or open the circuit.

Thus, the only correct option is  E

E. A conductor is needed for electricity to flow in a circuit.

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Prove that PV = nRT.​
qaws [65]

Find your answer in the explanation below.

Explanation:

PV = nRT is called the ideal gas equation and its a combination of 3 laws; Charles' law, Boyle's law and Avogadro's law.

According to Boyle's law, at constant temperature, the volume of a gas is inversely proportional to the pressure. i.e V = 1/P

From, Charles' law, we have that volume is directly proportional to the absolute temperature of the gas at constant pressure. i.e V = T

Avogadro's law finally states that equal volume of all gases at the same temperature and pressure contain the same number of molecules. i.e V = n

Combining the 3 Laws together i.e equating volume in all 3 laws, we have

V = nT/P,

V = constant nT/P

(constant = general gas constant = R)

V = RnT/P

by bringing P to the LHS, we have,

PV = nRT.

Q.E.D

6 0
3 years ago
Many homeowners treat their lawns with CaCO3(s) to reduce the acidity of the soil. Write a net ionic equation for the reaction o
Aliun [14]

Many homeowners treat their lawns with CaCO3(s) to reduce the acidity of the soil. The net ionic equation for the reaction of CaCO3(s) with a strong acid, HCl (I chose HCl because it is a strong acid) is CaCO3(s) +2 HCl(aq) → CaCl2(s) + H2O(aq) + CO2(g).

3 0
3 years ago
Can some right a paragraph about photosynthesis pls =))))))))))))))))))))))
Alina [70]

Answer:

Photosynthesis is the process in which plants harness energy from the sun to make their own nutrition. The process converts light energy into chemical energy through cellular respiration.

Explanation:

Just to start you off. I hope it helps! (❛ ᴗ ❛)

3 0
3 years ago
Read 2 more answers
Please help me I will do anything can you please show your work
oee [108]

Answer:

(1) 720 seconds (2) 10800 seconds (3) 17 dozens (4) 1.45 x 10^{25} (5) 13.29 moles

Explanation:

(1) 720 seconds

1 minute = 60 seconds

12 minutes = 720 seconds   (12 x 60)

(2) 10800 seconds

1 hour = 60 minutes  1 minute = 60 seconds

3 x 60 = 180 minutes in 3 hours

180 x 60 = 10800 seconds in 180 minutes that are in 3 hours

(3) 17 dozens

1 dozen = 12

204 ÷ 12 = 17 dozens  

(4) 1.45 x 10^{25}

8.00 moles CO2 x \frac{3 moles atoms}{1 moles CO2} = 24.0 moles atoms

24.0 moles x \frac{6.022 × 10^{23}  }{1 mole} } = 1.45 x 10^{25}

(5) 13.29 moles

sorry but I'm not fully sure if this one is correct

8 x 10^{24} x \frac{1 mole}{6.02 × 10^{23} } = 13.29 moles

7 0
3 years ago
I only need help in the bottom section? Please someone help me please?
kherson [118]
Energy in the nucleus of an atom of uranium: Nuclear energy
Energy of a moving object: Kinetic Energy 
Energy stored in chemical bonds: Potential Energy
Energy emitted from light bulb: Radiant Energy
Energy in a battery: Stored Energy
Energy in our food: Chemical Energy
Energy emitted from a radio: Electromagnetic Energy
Energy affected by mass and speed: Kinetic Energy
Energy affected by position and condition: Potential Energy
Energy from our star that some homes use for electricity: Radiant Energy
I hope this was found helpful!
I was happy to assist you with your Homework :)
4 0
4 years ago
Read 2 more answers
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