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Kisachek [45]
3 years ago
15

the speed limit is posted as 35 km/hr . your speedometer reads that you are going 40 miles/hr. are you speeding?

Chemistry
1 answer:
Morgarella [4.7K]3 years ago
4 0
No, because 40 miles is the same as nearly 25 km/h. 
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The nucleoside adenosine exists in a protonated form with a pKa of 3.8. The percentage of the protonated form at pH 4.8 is close
Natasha_Volkova [10]

Answer:

Ok:

Explanation:

So, you can use the Henderson-Hasselbalch equation for this:

pH = pKa + log(A^-/HA) where A- is the conjugate base of the acid. In other words, A- is the deprotonated form and HA is the protonated.

We can solve that

1 = log(A^-/HA\\) and so 10 = A^-/HA or 10HA = A-.  For every 1 protonated form of adenosine (HA), there are 10 A-. So, the percent in the protonated form will be 1(1+10) or 1/11 which is close to 9 percent.

6 0
3 years ago
How many moles of calcium atoms are in 77.4g of Ca?
lina2011 [118]

Answer:

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Explanation:

Use Calcium's molar mass to convert g of Ca into mol of Ca.

6 0
3 years ago
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lorasvet [3.4K]
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6 0
4 years ago
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Anton [14]
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Just divide the masses by volume to find out the density, multiply the volume with density to find out the mass and divide the mass by density to find out the volume.
To turn the result into SI unit (kg/l), divide the g by 1000 and ml by 1000.
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there are 78 organs and 4 tissue in the body so organ

4 0
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