They come up with a hypothesis (question to investigate), then they work out what variables and what they will be measuring, keeping the same and changing in the experiment
A thermometer because it is the only tool that measures temperature.
1. Answer:
1.0 × 10–9 M OH–
Explanation:
pH = -Log[H+]
pOH = -Log[OH-]
But;
pH + pOH = 14
Therefore;
[H+] + [OH-] = 1.0 × 10^-14 M
Therefore;
[OH-] = 1.0 × 10^-14 M - (1.0 × 10^–5 M)
= 1.0 × 10^-9 M OH–
2. Answer;
pH = 7.28
Explanation;
pH = -Log[H3O+]
Given;
[H3O+] = 5.2 × 10^–8 M
Therefore;
pH = - log [5.2 × 10^–8 M]
= 7.28
The pH is 7.28
Answer:
aloneness is the feeling of lonely even if u r in crowd of 1000ppl.
feeling alone is okey
it will make u understand yrself.
and if u r sad try to be happy yrself cus noone is here to make u happy and bring smile on yr face.
and yeah here are a lots of girls .
who can give u comfort.
hope it helps.
stay safe healthy and happy.
