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valkas [14]
3 years ago
7

For electricity to flow, what do you need?

Chemistry
2 answers:
jek_recluse [69]3 years ago
5 0

Answer:

D

Explanation:

you need battery, light bulb and wire in a close circuit

sashaice [31]3 years ago
4 0

Answer:

D - a battery, light bulb and wire in a closed circuit.

Explanation:

A battery due to the charge in it.

A light bulb so the energy has somewhere to go to.

A wire in a closed circuit, so that the energy has a place for transport without interruptions.

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If the Temperature exerted on a sample of gas is increased from 273K to 410K, and the initial pressure is 1.3317 atm what is the
dsp73

Answer: 2.00 atm

Explanation:

P1/T1 = P2/T2

1.3317/273 = P2/410

P2 = 2.00 atm

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3 years ago
A generator is not required to generate electrical energy when which of the following energy sources is used?
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Answer:

think it's C but my gut is telling me A

Explanation:

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2 years ago
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What role do guanacos play in the Andes Mountains ecosystem?.
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Grasses and plants are producers, guanacos are herbivores and are primary consumers and pumas are predators and secondary consumers

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2 years ago
Which of the following would make a solution?
gizmo_the_mogwai [7]

Answer:

B sugar in water

Explanation:

because sugar dissolves in water while the others don't

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The mole fraction of iodine, i2, dissolved in dichloromethane, ch2cl2, is 0.115. what is the molal concentration, m, of iodine i
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The molality of a solute is equal to the moles of solute per kg of solvent. We are given the mole fraction of I₂ in CH₂Cl₂ is <em>X</em> = 0.115. If we can an arbitrary sample of 1 mole of solution, we will have:

0.115 mol I₂

1 - 0.115 = 0.885 mol CH₂Cl₂

We need moles of solute, which we have, and must convert our moles of solvent to kg:

0.885 mol x 84.93 g/mol = 75.2 g CH₂Cl₂ x 1 kg/1000g = 0.0752 kg CH₂Cl₂

We can now calculate the molality:

m = 0.115 mol I₂/0.0752 kg CH₂Cl₂
m = 1.53 mol I₂/kg CH₂Cl₂

The molality of the iodine solution is 1.53.
5 0
3 years ago
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