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PIT_PIT [208]
2 years ago
6

A student hits a nail with a hammer. During the collision, there is _____.

Chemistry
1 answer:
Zolol [24]2 years ago
8 0
A force on the nail
and also the hammer
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How do atoms form a new compound? A: By sharing electrons with each other B: By losing electrons to each other C: By gaining ele
scoundrel [369]
By sharing electrons with one another
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3 years ago
How many moles of oxygen are there in 3 moles of Zn(NO3)2? (2 points)
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there are 6 moles of oxygen in Zn(No3)2

4 0
2 years ago
What are the equilibrium concentrations of pb2+ and f– in a saturated solution of lead(ii) fluoride if the ksp of pbf2 is 3.20×1
erica [24]
Answer is:  the equilibrium concentrations fluorine anion are 0.004 M and lead cation are 0.002 M.<span>
Chemical reaction: PbF</span>₂(aq) → Pb²⁺(aq) + 2F⁻(aq).<span>
Ksp = 3,2·10</span>⁻⁸.
[Pb²⁺] = x.
[F⁻] = 2[Pb²⁺] = 2x<span>
Ksp = [Pb²</span>⁺] · [F⁻]².
Ksp = x · 4x².
3,2·10⁻⁸ = 4x³.
x = ∛3,2·10⁻⁸ ÷ 4.
x = [Pb²⁺] = 0,002M = 2·10⁻³ M.
[F⁻] = 2 · 0,002M = 0,004 M = 4·10⁻³ M.

6 0
3 years ago
Read 2 more answers
In which process are simple materials chemically combined to form more complex materials?
allsm [11]

Answer:

A) synthesis

I hope this helps!

3 0
3 years ago
4. A compact disc has a diameter of 11.8 cm. What is the surface area of the disc in square centimeters? In square meters? [Area
d1i1m1o1n [39]
<span>The surface area is 109.3 square centimeters or 0.01093 square meters. The area formula requires that we use the radius of the disc. We can find the radius by diving the diameter by 2, so radius = 11.8/2 or 5.9 cm. We can use 3.14 as an approximation for π. The surface area is 3.14 * (5.9*5.9). Since the diameter is given in cm, the surface area units are in square centimeters. To convert to meters, divide any measurement in centimeters by 100, but we need to convert to "square" meters, so we need to divide our square centimeters by 100 * 100, or by 10,000. Dividing 109.3 by 10,000 results in 0.01093 square "meters".</span>
8 0
3 years ago
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