Answer:
OB
Explanation:
Water is necessary. Since during photosynthesis water reacts with carbon dioxide to form glucose and oxygen.
Calcium is a big NO!!.
KOH + HBr ---> KBr + H2O
0,3 moles of HBr ---in-------1000ml
x moles of HBr-------in------75ml
x = 0,0225 moles of HBr
according to the reaction: 1 mole of KOH = 1 mole of HBr
so
0,0225 moles of HBr = 0,0225 moles of KOH
0,0225 mole of KOH------in-----45ml
x moles of KOH -----------in------1000ml
x = 0,5 moles of KOH
answer: 0,5 mol/dm³ KOH (molarity)
Answer:
The cyclist must be fed in order to continue to pedal because food will. provide him/her with energy to continue with it.
Atmospheric pressure increases as altitude increases therefore boiling time will need to be extended
