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Genrish500 [490]
2 years ago
7

How many moles of magnesium are needed to react with 3.0 mol of O2?

Chemistry
1 answer:
labwork [276]2 years ago
6 0

Answer:

2 moles

Explanation:

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1. Why do you think pepper behaved the way it did in this experiment? What do you think that sugar and salt would do?
goblinko [34]

The experiment is related to the demonstration using Pepper. When pepper is spread over water, it clumps together This is because pepper is hydrophobic. When repeated with sugar and salt, they instantly dissolved. This means they are attracted to water. When also sprinkled on the surface of the water, it floats. This is caused by surface tension.

To break the surface tension of water, one can use aeration or the use of chemicals such as soap molecules which contain a long chain of hydrogen as well as carbon atoms.

<h3>What is surface tension?</h3>

Surface tension is the propensity of liquid surfaces at rest to shrink to the smallest feasible surface area. Surface tension permits items with a higher density than water, such as razor blades and insects (such as water striders), to float on the water's surface without being immersed.

A force tensiometer can be used to measure surface tension. The forces exerted on a probe situated at the liquid-gas or liquid-liquid interface are measured by these devices.

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10 months ago
The international space station (ISS) orbits in this layer of Earth's atmosphere.
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Answer:

D thermosphere

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The thermosphere is home to the International Space Station as it orbits Earth. This is also where you'll find low Earth orbit satellites

3 0
2 years ago
What are the representative elements usually called
antiseptic1488 [7]

Answer:

There are two sets of groups in the periodic table. The first set are Group A elements and are also known as representative elements. The second set are Group B elements and are also known as transition metals. Representative elements are the most abundant elements on earth.

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3 years ago
I NEED HELP!!! How is continental crust different from oceanic crust?
tensa zangetsu [6.8K]

Answer:

A

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Oceanic crust is thinner and more likely to sink

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There is no chemical change
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