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mrs_skeptik [129]
3 years ago
6

What makes radioisotopes useful for dating objects answers?

Chemistry
1 answer:
Rus_ich [418]3 years ago
7 0
If they have a long halflife, you can tell how much time has gone by since the element last has changed on earth.
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The density of water is 62.4 lb/ft3. If a swimming pool holds 10,000 gallons of water, the weight of water in the pool is lbs. (
Semenov [28]
In this case, you are given the water density (62.4lb/ft3) and the water volume (10,000 gallons). But the unit used in the density and gallon is different, so you need to convert it. The calculation would be:

mass= density * volume
mass= 62.4 lb/ft3 * 10,000 gallons * (231 inch3/gallon) * (1 ft3/ 1728 inch3)
mass= 83,416.66 lbs= 81417 lbs
3 0
3 years ago
How do you know how many valence electrons are in a molecule?
telo118 [61]
1. by making a atomic configuration
2.by making a table of shells of k.l.m.n....
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4 0
4 years ago
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How does a system at equilibrium respond to the addition of more reactant
grin007 [14]

Answer:

It favors the forward reaction.

Explanation:

According to Le Chatelier's Principle, when a system at equilibrium suffers a perturbation, the system will react in order to counteract the effect of such perturbation.

If more reactant is added, the system will try to decrease its concentration. It will do so by favoring the forward reaction, decreasing the concentration of the reactant  and increasing the concentration of the products, in order to re-establish the equilibrium.

7 0
4 years ago
Does the shape, size, or temperature of matter affect its density?
aleksley [76]
Shape and size doesn't affect the density of an object but temperature does affect the density of an object because the molecules act differently in different temps.
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3 years ago
What happens when light rays pass through a concave lens?
valina [46]

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b)parallel light rays pass through the lens and are

refracted outward.

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