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Gnom [1K]
3 years ago
11

Which of these molecules has a lewis structure with a central atom having no nonbonding electron pairs? check all that apply. ch

eck all that apply. co2 sif4 h2s pf3?
Chemistry
1 answer:
Soloha48 [4]3 years ago
5 0
What are the answer choices
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1. What is the wave speed of a wave that has a frequency of 100 Hz and a wavelength of 0.30 m?
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HELP ASAP!!!!!! I NEED HELP
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The organs of the digestive system such as the pancreas, liver, stomach, small intestine, and large intestine help in the digestion of food.

<h3>What are organs?</h3>

Organs are a collection of tissues that are closely related and which perform a related function.

The role and function of the organs of the digestive system are as follows:

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Therefore, the organs of the digestive system such as the pancreas, liver, stomach, small intestine, and large intestine help in the digestion of food.

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2 years ago
Choose the description that matches the law of included fragments.
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The answer is B

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3 years ago
1. A 50 gram sample of a radioisotope decays to 12.5 grams in 14.4 seconds. What is
stiv31 [10]

Answer:

Half life = 7.2 seconds

Explanation:

from \: decay \: equation \\ 2.303 log( \frac{n.}{nt} )  = kt \\ 2.303 log( \frac{50}{12.5} )  = k \times 14.4 \\ k =  \frac{2.303 log( \frac{50}{12.5} )}{14.4}  \\ k = 0.096288 {s}^{ - 1}  \\ since \: half \: life =  \frac{ ln(2) }{k}  \\ half \: life  =   \frac{ ln(2) }{0.096288}  \\ half \: life = 7.2 \: seconds

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3 years ago
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