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Amiraneli [1.4K]
3 years ago
5

Name the hardest artificial substance known?

Chemistry
2 answers:
3241004551 [841]3 years ago
6 0

Answer:

wurtzite boron nitride

Scientists have calculated that wurtzite boron nitride has a greater indentation strengths than diamond.

blagie [28]3 years ago
4 0
The hardest material is diamond. The hardest artificial substance would wurtzite boron nitride. That's basically just man-made diamonds.
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What is the oxidation number of sulfur in H2SO3?<br> a. +3<br> b. +1<br> c. +2<br> d. +4
Alla [95]
We need to keep in mind that the compound is neutral.

H2SO3
2(+1)+S+3(-2)=0 (since its neutral)
2+S-6=0
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Therefore the oxidation number for sulfur is +4.
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given two equations representing reactions: which type of reaction is represented by each of these equations?
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Answer:

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Equation 2 - nuclear fusion

Explanation:

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7 0
3 years ago
Darin skateboarded to the north at 4 m/s. In 5 seconds, he sped up to 7 m/s. What was his acceleration?
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To solve this problem we can use following equation.

v =u + at

Where v is the final velocity (m/s), u is the initial velocity (m/s), a is the acceleration (m/s²) and t is the time taken (s).

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u = 4 m/s
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By applying the equation, we can get
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Hence, the acceleration is 0.6 m/s² towards north.

Answer is "C".
4 0
3 years ago
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