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3 years ago

(Please help 15 points the assignment is late) (multiple questions) (everything is virtual task )

Chemistry

1 answer:

Brilliant_brown [7]3 years ago

7 0

Answer:

Hypothesis and Data Collection

Part A-i think the glass with cold water will have more of a air bubble effect then the one with hot water

Part B-The glass with cold water is having more of a reaction but the water level in both of them are the same

Part C-yes, the glass with cold water had more of a reaction then the one with hot water

Analyze and Extend

Part A-yes, the glass with cold water had more of a reaction then the one with hot water

Part B-Becuase the reaction in the cold water was greater than the one in the hot water we can come to the conclusion that CO2 has a higher solubility in cold water

Part C-the soda that was left in the refrigerator wil have more "fizzing and bubbles" becuase it has higher solubility then the one left in the hot sun

Part D-There is now too much CO2 in the atmosphere and the tempertaures will continue to increase (this is why the summer time is hotter then the rest of the year)

Ik i was late to answer this but can you please give me brainliest

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777dan777 [17]

Answer:

Explanation:

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3 years ago

Thallium-207 decays exponentially with a half life of 4.5 minutes. if the initial amount of the isotope was 28 grams, how many g

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An exponential decay law has the general form: A = Ao * e ^ (-kt) =>

A/Ao = e^(-kt)

Half-life time => A/Ao = 1/2, and t = 4.5 min

=> 1/2 = e^(-k*4.5) => ln(2) = 4.5k => k = ln(2) / 4.5 ≈ 0.154

Now replace the value of k, Ao = 28g and t = 7 min to find how many grams of Thalium-207 will remain:

A = Ao e ^ (-kt) = 28 g * e ^( -0.154 * 7) = 9.5 g

Answer 9.5 g.

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3 years ago

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Answer:

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Explanation:

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1. Given the hypotenuse of a 45°, 45°, 90° triangle is 8, find the length of the legs. Leave your answers in radical form if nee

Alex17521 [72]

Answer:

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Explanation:

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