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stealth61 [152]
3 years ago
7

What is the reaction which a metal element displaces the metal atom of a compound?

Chemistry
1 answer:
Marina86 [1]3 years ago
4 0

A single replacement reaction, sometimes called a single displacement reaction, is a reaction in which one element is substituted for another element in a compound. The starting materials are always pure elements, such as a pure zinc metal or hydrogen gas, plus an aqueous compound.

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The mole concept will most likely be used in
Ronch [10]

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Determining how many ozone molecules are lost in the atmosphere.

Explanation:

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3 years ago
Which is an example of making a quantitative observation?
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measuring the mass of metal used in a reaction
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What is the source of energy that is released in an exothermic reaction? what absorbs the energy that is released ?
Nadusha1986 [10]
Hello,

Here are your answers:

The proper answers to your questions are....

1. "Chemical bond energy is converted to kinetic energy"...... which causes it to release energy around its surroundings!

2. "Endothermic reactions"...... Endothermic reactions are the things that absorb the energy!

If you need anymore help feel free to ask me!

Hope this helps!
5 0
3 years ago
How many cans of dog food must Sam buy for his 3 dogs if each dog eats 2 cans per day? Sam only shops once a week.
sergey [27]
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7 0
3 years ago
Determine the distance of closest approach (in fm) before the alpha particle reverses direction. Assume the lead nucleus remains
kiruha [24]

Answer:

Take E(alpha particle energy) = 5.5 MeV (5.5x106x1.6x10-19)

If the charge on the lead nucleus is +82e(atomic number of lead is 82) = +82x1.6x10-19 C and the charge on the alpha particle is +2e = 2x1.6x10-19 C

Using dc = (1/4πεo)qQ/Eα we have

dc = [9x10^9x(2x1.6x10-19x82x1.6x10-19)]/5.5x10-13 = 6.67x10^-13m. = 6.67 x 10^-13 x 10^15 = 6.67 x 10^2fm

Note: 1meter = 10^15fentometer

Explanation:

This is well inside the atom but some eight nuclear diameters from the centre of the lead nucleus.

7 0
3 years ago
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