Explanation:
2H2O2 => 2H2O + O2
Moles of hydrogen peroxide = 0.150dm³ * (0.02mol/dm³) = 0.003mol .
Moles of oxygen = 0.0015mol.
Volume of oxygen = 0.0015mol * (22.4dm³/mol) = 0.0336dm³.
Answer:
c is your answer there u go
Explanation:
Answer:
Explanation:
Iron is the correct answer
Answer:
A HBr
this is hydrogen acid (HBr) but KNO3 is a crystalline salt,MgCl2 and H2O are neutral
If its one significant figure, it means you round that number to the first digit for example 2457 to 1 significant figure will be 3000. Do you now how to round?