C10H8N2O2S2
C=12,H=1,N=14,O=16,S=32
R. F. M (Relative Formula Mass)=(12*10)+8+(2*14)+(2*16)+(2*32)
Number of moles =given mass/formula mass
=29/252
=0.1151 moles
<u>Answer:</u> The partial pressure of hydrogen is 705.9 mmHg
<u>Explanation:</u>
Dalton's law of partial pressure states that the total pressure of the system is equal to the sum of partial pressure of each component present in it.
To calculate the partial pressure of hydrogen gas, we use the law given by Dalton, which is:
![P_T=p_{H_2}+p_{H_2O}](https://tex.z-dn.net/?f=P_T%3Dp_%7BH_2%7D%2Bp_%7BH_2O%7D)
We are given:
Total pressure of the collection tube,
= 729.8 mmHg
Vapor pressure of water,
= 23.8 mmHg
Putting values in above equation, we get:
![729.7=p_{H_2}+23.8\\\\p_{H_2}=729.7-23.8=705.9mmHg](https://tex.z-dn.net/?f=729.7%3Dp_%7BH_2%7D%2B23.8%5C%5C%5C%5Cp_%7BH_2%7D%3D729.7-23.8%3D705.9mmHg)
Hence, the partial pressure of hydrogen is 705.9 mmHg
Answer:
Na2O2
the formula of sodium peroxide
Answer:
181 picometers is the radius of a gallium atom.
Explanation:
Primitive cubic cell is an arrangement in which constituent particles are present only at the corners of the cube.Also known as simple unit cell. In this arrangement number of total particles is equal to 1.
![\frac{1}{8}\times 8 =1](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B8%7D%5Ctimes%208%20%3D1)
Gallium crystallizes in a primitive cubic unit cell.
Edge length of cubic unit cell = a = 362 pm
Let the radius be gallium atom be r
Two atoms of gallium touching each other = a =2r
362 pm = 2r
r = 181 pm
181 picometers is the radius of a gallium atom.