1.4 explain why it is important to support individuals to challenge information about services that may present a barrier to participation

So, as I understand it, we're talking about faulty information, one that is limiting people's access to certain services. An example of such information is the denial of an interpreter service for the Deaf. If someone is spreading the information that such a service is not available, even if is, then when someone challenges this information, they should be supported.

Answer two atoms of oxygen;

Answer:             1.0  × 10⁻⁵ msolution:                     as we know ph is given as,                                    ph  = -log [h⁺]and,                                    [h⁺]  =  10^-ph    (1)putting value of ph in eq. 1,                                    [h⁺]  =  10⁻⁵                                    [h⁺]  =  1.0  × 10⁻⁵ m