I need this ASAP!!!!!!!!!!

Chemistry

2 answers:

grigory [225]3 years ago

5 0

Build a wall the water will knock down the wall cause water is strong

dlinn [17]3 years ago

3 0

Answer: if you build a wall that when the water hits it it seperates the sand from the water and spits the water onto the ocean side of the wall and spit the sand on the beach side but also build a bridge to that people can get to the water if wanted

Explanation:

if you put a wall it would block you from getting to the water or vice versa.

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Nostrana [21]

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3 years ago

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Find A, B, and C

Lynna [10]

Electrons = protons
protons = atomic number
protons + neutrons = atomic mass

Therefore: a) protons + 7 = 15
protons= 15 -7
protons= 8

B) Remember proton = atomic number
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C)Now we know the atomic number so we can easily check on the periodic table what element has an atomic number of 8, which is Oxygen

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RideAnS [48]

Answer:

12.18 u

Explanation:

The average atomic mass of an element is calculated by taking the weighted average of the atomic masses of its stable isotopes.

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3 years ago

Which example best demonstrates the relationship between temperature and pressure? bubbles forming in dough when it is heated bu

Margaret [11]

I think the correct answer from the choices listed above is the first option. The best example that demonstrates the relationship between temperature and pressure would be that <span>bubbles forming in dough when it is heated. Hope this answers the question.</span>

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3 years ago

10) How many grams are there in 1.00 x 10^24 molecules of BC13?

lana66690 [7]

194.5 g of BCl₃ is present in 1 × 10²⁴ molecules of BCl₃.

Explanation:

In order to convert the given number of molecules of BCl₃ to grams, first we have to convert the molecules to moles.

It is known that 1 moles of any element has 6.022×10²³ molecules.

Then 1 molecule will have $\frac{1}{6.022*10^{23} }$ moles.