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RUDIKE [14]
4 years ago
9

A beaker holding an unknown sample weighs 143.3502 g. The beaker weighs 132.2753 g. The unknown sample has a density of 2.18 g/m

L. What is its volume?
Chemistry
1 answer:
dexar [7]4 years ago
5 0

Answer:

5.08mL is the volume the sample occupies

Explanation:

Volume is defined as the mass of a substance in grams per mililiter that the substance occupies.

Subtracting the mass of the beaker + the sample - the mass of the sample we can obtain the mass of the sample:

143.3502g - 132.2753g = 11.0749g of the sample.

As its density is 2.18g/mL, the volume that the sample occupies is:

11.0749g * (1mL / 2.18g) =

<h3>5.08mL is the volume the sample occupies</h3>
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Making lemonade with powder: The flavored powder is soluble and will dissolve into the water.

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For the reactionN2(g)+O2(g)?2NO(g)classify each of the following actions by whether it causes a leftward shift, a rightward shif
Soloha48 [4]

Answer: Le Chatleir Principle

Explanation:  The answer of this question can be easily explanied through the Le Chatleir Principle which states that In order to maintain the equilibrium of the reaction, the stress applied to that particular direction will move the equilibrium to the opposite direction in which the stress has been applied.

The given reaction is -

      N_{2}(g)+O_{2}(g)\rightleftharpoons 2NO(g)

If the amount of the oxygen is reduced to half and is being doubled, then the reaction will move in froward direction that is a rightward shift. Same situation will arise in option c and d.

If the amount of nitrogen monoxide is reduced to half or being doubled, the reaction will move towards backward direction that is a leftward reaction.

6 0
4 years ago
The formation of protons over neutrons (thus producing about a 7:1 ratio) was favored in the early universe because:____.
tatiyna

Because it requires more energy to create a neutron from a proton than it does to create a proton from a neutron, protons were formed more frequently than neutrons in the early universe. The correct answer is option b.

To find the answer, we need to know more about the early universe.

<h3>How the formation of proton over neutrons was favored in the early universe?</h3>
  • A neutron is produced with greater energy than a proton.
  • However, later on, some of the protons were changed into neutrons.
  • Contrary to some claims, the proton is a stable particle that never decays, but the neutron is unstable outside of the nucleus and decays with a half life of around 10.5 minutes.
  • However, very few would have had time to decay on the timeline you mention in your question.
  • Every matter particle should have been accompanied by an antimatter particle, and every proton, neutron, and electron, by an anti-neutron and a positron, respectively.
  • Where did all the antimatter go is the great mystery. There have been a few attempts to explain this, but they have failed.

Thus, we can conclude that, the correct answer is option b.

Learn more about the early universe here:

brainly.com/question/28130096

#SPJ1

7 0
2 years ago
SERE
Kay [80]

Answer:

d. oxygen (O2) is the answer

3 0
3 years ago
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