4 years ago

In a molecule of methane (ch4), what type of bond joins the carbon atom to each of the hydrogen atoms?

1 answer:

8 0

A polar covalent bond, the electronegativity of carbon is 2.6, and for hydrogen it's 2.1, therefore their bond is polar, but the molecule itself is not, because of its 3D structure

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What is the Percent yield is 4.65 got copper is produced by 1.87 percent yield is got copper is produced when 1.87 grams of alum

konstantin123 [22]

Answer:

The percent yield is 70.486%

Explanation:

$3CuSO_{4}+2Al\longrightarrow Al_{2}(SO_{4})_{3}+3Cu\\\\Weight\:of\:Al=1.87g\\54g\:of\:Al\:will\:give\:190.5g\:of\:Cu\\$

$1.87g\:of\:Al\:gives=\frac{190.5\times1.87}{54}=6.597g\:of\:Cu\\ \\Weight\:of\:Cu\:obtained=4.65g\\Theoretical\:Yield=6.597g\\Experimental\:Yield=4.65g\\Percent\:Yield=\frac{Experimental\:Yield}{Theoretical\:Yield}\times100=\frac{4.65}{6.597}\times100=70.486\%$

Hence, the percent yield is 70.486%

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4 years ago

Which step do you use first to calculate the number of grams of FeCl2 produced when starting with 30.3 g of Fe in this reaction?

Lisa [10]

Answer:

I dont care I want pionts

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3 years ago

How many protons and electrons do the following ion have?

GalinKa [24]

a) Number of protons = number of electron in the atom = atomic number

So it has 7 protons answer

N-3 has gained 3 electron so number of electrons + 7+3

= 10 answer

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4 years ago

How many moles are in a 4.2 gram gold sample

lubasha [3.4K]

The answer is 196.96655 hope this helps

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4 years ago

8. Which has greater thermal energy: a glass of water<br> or a lake full of water? Why?

MariettaO [177]

Answer:

Im assuming a glass of water

Explanation:

there is less water that needs to be heated up

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3 years ago