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2 years ago

Which piece of evidence would suggest an unknown substance is an ionic compound?

1 answer:

7 0

The piece of evidence would suggest an unknown substance is an ionic compound is that it conducts electricity when dissolved in water.

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How many electrons does the isotope helium-5 have

baherus [9]

Answer:

two electrons.

Explanation:

Helium-5, like all other helium isotopes, has two protons and two electrons. Its different from the others in the fact that it has three neutrons. It is one of the unstable isotopes, having a half-life of significantly less than a picosecond (a trillionth of a second). your welcome!!

6 0

2 years ago

Select the correct structure that corresponds to the name. <br> 3,3-dimethylcyclopentene

Veseljchak [2.6K]

Answer:

See image

Explanation:

8 0

2 years ago

A population of rabbits triples every 2 months If there are 2 rabbits initially, how long will it take for the population to inc

Bezzdna [24]

Answer:

The rabbit population will reach 500 after 10 months.

Explanation:

According to the given data:

The initial number of rabbit's equals 2.

Number of rabbit's after 2 months =2x3= 6

Number of rabbit's after 4 months = 6x3=18

Number of rabbit's after 6 months = 18x3=54

Number of rabbit's after 8 months = 54x3=162

Thus we can see that the number of rabbit's form a Geometric series with common ratio =3 and initial term = 2

Now the general term of a geometric series with first term 'a' and common ratio 'r' is given by

$T_{n+1}=ar^{n}$

Thus we need to find when the term becomes 500 thus using the given data we have

$500=2\cdot 3^{n}\\\\3^{n}=250\\\\(n)log_3(3)=log_3(250)\\\\(n)=5.025\\\\$

Thus the fifth term (excluding the start term) will have a rabbit count of 500 now since each term has a time difference of 2 months thus sixth term will occur after $5\times 2=10months$

7 0

2 years ago

How is molarity affected if some solution splashes out of the flask during titration?

Annette [7]

<span>If you used more water, the molarity would go down since molarity is moles/liter, and the opposite if you used more water.

If the acid absorbed water, the molarity would go down because the absorbed moisture will skew the weight of the acid up.

That would make the molarity go down since there would have been unreacted acid in the spilled liquid.</span>

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!

7 0

2 years ago

Why is the large intestine called the large

Sloan [31]

Answer:

because it is first before the small intestine and it digests food first

Explanation:

7 0

2 years ago