Question 23. Which of the following is a reaction of dilute sodium hydroxide?
A it reacts with ammonium chloride to produce ammonia
B It reacts with calcium carbonate to produce carbon dioxide
с It reacts with copper(in)oxide to produce water.
It reacts with Universal Indicator solution turning it red
D

b

Explanation:

carbonated and dioxedi mixed up

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.

that tool would be a compass