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EastWind [94]
3 years ago
9

Carbon dioxide is returned to the atmosphere primarily by the

Chemistry
2 answers:
Hitman42 [59]3 years ago
7 0

Answer:

yall its b

Explanation: cus i took the tested

Mandarinka [93]3 years ago
4 0

Answer:c or d

Explanation:

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germanium -66 has a half-life of 2.5 hours. you have 35 grams of radioactive material. after 16 days, how much radioactive mater
Maru [420]

Hey there!

A half-life means after a certain amount of time, half of that substance will be gone/changed after that time.

How many half-lives are in 16 days?

Multiply 16 by 24 (to get the total hours) and divide that by 2.5.

That is 153.6 half-lives.

35(0.5)^(153.6) represents the equation for this.

Simplify this and get 8.88 x 10^(-45).

There will be 2.02 x 10^(-45)g of germanium-66 sample remaining after 16 days.

Hope this helps!

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3 years ago
Is Co or a Cobalt ion bigger
alexira [117]

Answer:

co is colbalt  

Explanation:

Cobalt

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Titration experiments require the use of a...
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Titration experiments require the use of a burette. It is a long graduated glass tube held in place by a clamp stand. It has a tap fixture on the end that regulates the delivery of small volumes of liquid into a beaker in the titration process. Bunsen burners are used to heat substances and crucibles are used to hold items to be heated to high temperatures. 
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4 years ago
Which one is the answer?
Amanda [17]

Answer:

I think a light bulb

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please I need brainlist

5 0
3 years ago
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Sound travels most quickly through solids because _____. solids have greater frequencies the molecules in solids are very close
uranmaximum [27]
Sound travels most quickly through solids because _____.

answer is: because solids r the most sense.

The distance between molecules in solids r very small.Because they are so close, they can collide very quickly, i.e. it takes less time for a molecule of the solid to 'bump' into its neighbor. Solids are packed together tighter than liquids and gases, hence sound travels fastest in solids.

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3 years ago
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