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hoa [83]
3 years ago
14

A small 15 kilogram canoe is floating downriver at a speed of 4 m/s. What is the canoe's kinetic energy?

Chemistry
1 answer:
Fofino [41]3 years ago
7 0

<span>m=15 kg mass of object</span>

<span>v=4 <span>ms</span> velocity of object</span>

<span><span>Ek</span>=<span>12</span>⋅15⋅<span>22</span></span>

<span><span>Ek</span>=<span>12</span>⋅15⋅4</span>

<span><span>Ek</span>=15⋅4</span>

<span><span>Ek</span>=40<span> Joules</span></span>

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What NaCl NaCl concentration results when 249 mL 249 mL of a 0.850 M 0.850 M NaCl NaCl solution is mixed with 667 mL 667 mL of a
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Answer:

The answer to your question is 0.54M

Explanation:

Data

Final concentration = ?

Concentration 1 = 0.850 M

Volume 1 = 249 ml = 0.249 l

Concentration 2 = 0.420 M

Volume 2 = 0.667 M

Process

1.- Calculate the number of moles in both solutions

Number of moles 1 = Molarity 1 x Volume 1

                               = 0.850 x 0.249

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Number of moles 2 = Molarity 2 x Volume 2

                                = 0.420 x 0.667

                                = 0.280

Total number of moles =  0.212 + 0.280

                                      = 0.492

2.-Calculate the final volume

Final volume = Volume 1 + Volume 2

Final volume = 0.249 + 0.667

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Molarity = 0.54

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3 years ago
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