Answer:
D
Explanation:
beacause all the elements in period 3 has different valence electrons hence you look at the first element in period 3 is sodium which has a valence electron of 1 when you go across the period to the right their valence electron decreases to be negative
Answer:
radiation density and dose
Explanation:
you won't always get radiation poisoning just from being near it for a few seconds but if it's a large dose at a time it may end up being harmful
The final pressure of the air at the top of the mountain has been 0.818 atm.
The gas in the sealed potato bag has been assumed to be the ideal gas.
Since, there has been no change in the moles of gas, the relationship of initial temperature, pressure, and volume, and final units has been given as:
![\dfrac{P_1V_1}{T_1}=\dfrac{P_2V_2}{T_2}](https://tex.z-dn.net/?f=%5Cdfrac%7BP_1V_1%7D%7BT_1%7D%3D%5Cdfrac%7BP_2V_2%7D%7BT_2%7D)
<h3>Computation for the air pressure at top of mountain</h3>
The units at valley floor has been considered as initial units, while at the top of mountain are considered as final units.
- The pressure at valley floor,
![P_1=1\;\rm atm](https://tex.z-dn.net/?f=P_1%3D1%5C%3B%5Crm%20atm)
- The temperature at the valley floor,
![T_1=25^\circ \rm C](https://tex.z-dn.net/?f=T_1%3D25%5E%5Ccirc%20%5Crm%20C)
- The volume at the valley floor,
![V_1=0.985\;\rm L](https://tex.z-dn.net/?f=V_1%3D0.985%5C%3B%5Crm%20L)
- The temperature at the top of the mountain,
![T_2=22^\circ \rm C](https://tex.z-dn.net/?f=T_2%3D22%5E%5Ccirc%20%5Crm%20C)
- The final volume at the top of the mountain,
![V_2=1.03\;\rm L](https://tex.z-dn.net/?f=V_2%3D1.03%5C%3B%5Crm%20L)
Substituting the values for the final pressure of the potato chips puff at the top of the mountain, ![P_2](https://tex.z-dn.net/?f=P_2)
![\rm \dfrac{1\;atm\;\times\;0.985\;L}{25^\circ C} =\dfrac{\textit P_2\;\times\;1.030\;L}{22^\circ C} \\\\0.03832=0.0468\;\textit P_2\\\\\textit P_2=0.818\;atm](https://tex.z-dn.net/?f=%5Crm%20%5Cdfrac%7B1%5C%3Batm%5C%3B%5Ctimes%5C%3B0.985%5C%3BL%7D%7B25%5E%5Ccirc%20C%7D%20%3D%5Cdfrac%7B%5Ctextit%20P_2%5C%3B%5Ctimes%5C%3B1.030%5C%3BL%7D%7B22%5E%5Ccirc%20C%7D%20%5C%5C%5C%5C0.03832%3D0.0468%5C%3B%5Ctextit%20P_2%5C%5C%5C%5C%5Ctextit%20P_2%3D0.818%5C%3Batm)
The final pressure of the air at the top of the mountain has been 0.818 atm.
Learn more about pressure, here:
brainly.com/question/356585
Answer:
Explanation:
Given parameters:
Number of breathe per minute = 15times
Volume of air per breath = 0.5L
Percentage of oxygen in air = 21%
Solution
There are 24 hours in a day.
60minutes makes a hour in a day,
I will breathe:
15 times x 60 x 24 = 21600 times in a day
The volume of air I will take in per day:
A breathe = 0.5L of air
21600breathe = 0.5 x 21600 = 10800L of air
Volume of oxygen I will breathe per day:
x 10800 = 2268L of oxygen
Answer:I think it could be A or B but I would choose A.
Explanation: