Concentration of H+ ions in HNO3 solution is 10⁻¹ which is equal to 0.1 M
![\bf \: pH \: = - log[{h}^{ + }]](https://tex.z-dn.net/?f=%20%5Cbf%20%20%5C%3A%20pH%20%5C%3A%20%20%3D%20%20-%20log%5B%7Bh%7D%5E%7B%20%2B%20%7D%5D)
putting the value we get
![\sf \dashrightarrow \: pH \: = - log \: [ \frac{1}{10}] \\ \\ \sf \dashrightarrow \: pH \: = - log \: {10}^{ - 1} \\ \\ \sf \dashrightarrow \: pH \: = 1](https://tex.z-dn.net/?f=%20%20%5Csf%20%5Cdashrightarrow%20%20%5C%3A%20pH%20%5C%3A%20%20%3D%20%20-%20log%20%5C%3A%20%5B%20%5Cfrac%7B1%7D%7B10%7D%5D%20%5C%5C%20%20%5C%5C%20%5Csf%20%5Cdashrightarrow%20%20%5C%3A%20pH%20%5C%3A%20%3D%20%20%20-%20log%20%5C%3A%20%7B10%7D%5E%7B%20-%201%7D%20%20%5C%5C%20%20%5C%5C%20%5Csf%20%5Cdashrightarrow%20%20%5C%3A%20pH%20%5C%3A%20%3D%201)
So, the required option is A) 1
Answer:
n₁ = 1.0× 10⁻⁴ mol
Explanation:
Given data:
Initial volume of balloon = 230 mL
Initial number of moles of He =?
Final number of moles of He = 3.8 × 10⁻⁴ mol
Final volume of balloon = 860 mL
Solution:
The given problem will be solve through Avogadro law,
"Number of moles of gas and volume are directly proportional to each other at constant temperature and constant pressure"
Mathematical relationship:
V₁/n₁ = V₂/n₂
No we will put the values.
230 mL /n₁ = 860 mL/ 3.8 × 10⁻⁴ mol
n₁ = 230 mL× 3.8 × 10⁻⁴ mol/ 860 mL
n₁ = 874 × 10⁻⁴ mol. mL / 860 mL
n₁ = 1.0× 10⁻⁴ mol
I think <span>500 m but i just think i dont know </span>
Answer: Oxygen and Carbon
Explanation:
