Answer:
35. Beaker 36. Stirring Rod 37. Bunsen Burner 38. test tube brush 39. Crucible tongs Number 34 is mortar and pestle
Explanation:
I hope its help and got it right anyway, some science tools and kitchen equipments have similar description that makes it easy.
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Answer:
2NaOH + 2Al +2H2O = 2NaAlO2 +3H
Explanation:
Aluminum is an amphoteric element it reacts with both bases and acids to form a salt and hydrogen gas.The reaction is highly exothermic.
Answer:
There are 20 atoms in hydrogen.
Explanation:
Multiply Coefficient with Hydrogens subscript. In this case the coefficient is a 4 so you multiply that with Hydrogens subscript which is 5. So it would be (4)(5)=20