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Dvinal [7]
3 years ago
11

A taxi hurries with a costant speed of 84km/h. How far it travel in 5 hour

Chemistry
1 answer:
Lerok [7]3 years ago
8 0
Hey there! If the taxi travels 84km in one hour (without making any changes in speed aka remaining constant), then multiply 84(5) to find how many kilometers it would drive in one hour. 84(5)=420km
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How would you prepare 3.5 L of a 0.9M solution of KCl?
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V=3,5L\\
Cm=0,9M\\
M_{KCl}=74\frac{g}{mol}\\\\
C_{m}=\frac{n}{V}\\\\
n=\frac{m}{M}\\\\
C_{m}=\frac{m}{MV} \ \ \ \Rightarrow  \ \ \ m=C_{m}MV\\\\
m=0,9\grac{mol}{L}*74\frac{g}{mol}*3,5L=233,1g

B. Add 233 g of KCl to a 3.5 L container; then add enough water to dissolve the KCl and fill the container to the 3.5 L mark. 
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3 years ago
How do scientists calculate the energy and frequency of photons?
adell [148]
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3 years ago
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7 0
2 years ago
Given that kb for c6h5nh2 is 1.7 × 10-9 at 25 °c, what is the value of ka for c6h5nh3 at 25 °c?
lina2011 [118]

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Putting values in above equation, we get:

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