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Andreyy89
3 years ago
10

Which of the following isotopes has the same number of neutrons as phosphorus – 21 (atomic number 15)

Chemistry
1 answer:
agasfer [191]3 years ago
3 0
The number of neutrons in phosphorus-21 is 16 (21-15).

Therefore the answer is B. Sulfur-32 also has 16 neutrons (32-16).

Hope this helps :)
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The strength of an acid is affected by the polarity of the bond connected to the acidic hydrogen. The more highly polarized this
Shtirlitz [24]

Answer:

The answer is "\bold{HClO_3 > HClO_2 >HClO > HBrO}"

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5 0
2 years ago
a sample of hydrogen gas (h2) is mixed with water vapor (h2o (g)). the make sure has a total pressure of 811 torr, and the water
Alborosie

Answer:

n=0.430molH_2

Explanation:

Hello!

In this case, considering the partial Dalton's law of partial pressures, we can notice that the total pressure equals the pressure of steam and the pressure of hydrogen, which can be determined as shown below:

p_T=p_H+p_w\\\\p_H=811torr-12torr=799torr*\frac{1atm}{760torr}\\\\p_H=1.05atm

Thus, by using the ideal gas law, we can compute the moles of hydrogen as shown below:

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Best regards!

6 0
3 years ago
Assume a gasoline is isooctane, which has a density of 0.692 g/ml. What is the mass of 3.8 gal of the gasoline (1 gal = 3.78 l)?
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Density is the ratio of mass to the volume.

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density=\frac{mass}{volume}

Now, density of isooctane = 0.692 g/mL

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3 years ago
What is the least polar solvent /solvent system used to run the tlc?
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I believe that it is petroleum ether.
8 0
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