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sashaice [31]
2 years ago
10

What is the density of a plastic ball that has a volume of 6cm) and a mass of 12g? 50 cm3

Chemistry
1 answer:
marissa [1.9K]2 years ago
4 0

Answer:

2 g/cm³

Explanation:

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How does the digestive system work with the muscular system?
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Answer:

the answer is not d because you can pee without moving. so its a because without the food nutrient no part of our body can work

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2 years ago
Mr. Jones, the science teacher, tells his students that energy cannot be created; it must be captured from the environment. He i
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The law of conservation of energy or first law of thermodynamics

Explanation:

From the context we can infer that Mr. Jones was describing the law of conservation of energy.

According to the law of conservation of energy:

  "energy is not created nor destroyed by can be transformed from one form to another" .

  The captured energy is a form of energy and it is change into other forms in the ecosystem.

Energy is initially captured in the ecosystem by plants.

learn more:

Laws of thermodynamics brainly.com/question/3564634

#learnwithBrainly

6 0
3 years ago
How many molecules of ethanol (c2h5oh) (the alcohol in alcoholic beverages) are present in 155 ml of ethanol? the density of eth
ozzi

First convert volume to mass:

mass = 0.789 g/mL * 155 mL = 122.295 g

 

Then convert mass to number of moles:

number of moles = 122.295 g * (1 mole / 46 g) = 2.66 moles

 

Using avogadros number, we get the molecules:

<span>number of molecules = 2.66 moles * 6.022 x 10^23 molecules / mole = 1.6 x 10^24 molecules</span>

4 0
2 years ago
A student obtains a sample of a pure solid compound. In addition to Avogadro’s number, which of the following must the student k
katrin2010 [14]

Answer:

Molar mass of the compound, mass of the sample

5 0
3 years ago
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PLEASE HURRY!!!Which common characteristic makes both batteries and fuel cells practical to use?
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Answer:

Option A

Explanation:

They are portable resources that convert chemical energy to electrical energy

6 0
3 years ago
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