5.6L of O2 means we have 0.25 moles of O2.
As, 1 mole has 6.023*10^23 molecules,
0.25 moles of O2 will have 0.25*6.023*10^23 molecules=1.50575*10^23 molecules
and as 1 molecule of O2 has 2 atoms, so, 1.50575*10^23 molecules will have 2*1.50575*10^23 atoms=3.0115*10^23 atoms of O.
I think it would be B maybe
Answer:
5.00
Explanation:
because ignoring the pH solution part and doing the math it comes around to 1.0x5.0 which 1 times anything is itself so its 5
Answer:
His first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. This is normally taken as the definition of inertia. ... The amount of the change in velocity is determined by Newton's second law of motion.
Explanation:
Answer: ![[OH^-] =10^{-10.75}=1.778\times 10^{-11}M](https://tex.z-dn.net/?f=%5BOH%5E-%5D%20%3D10%5E%7B-10.75%7D%3D1.778%5Ctimes%2010%5E%7B-11%7DM)
Explanation: pOH is defined as negative logarithm of hydroxide ions. More is the number of ![[OH^-]](https://tex.z-dn.net/?f=%5BOH%5E-%5D)
ions , lesser is the pOH and vice versa.
pH + pOH = 14
![10.75=-log[OH^-]](https://tex.z-dn.net/?f=10.75%3D-log%5BOH%5E-%5D)
![[OH^-] =10^{(-10.75)}=1.778\times 10^{-11}M](https://tex.z-dn.net/?f=%5BOH%5E-%5D%20%3D10%5E%7B%28-10.75%29%7D%3D1.778%5Ctimes%2010%5E%7B-11%7DM)
