Answer:
17
Explanation:
Don't mind the random letters
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Answer:
The order of reactivity of metals is as follows, Potassium > Sodium > Lithium > Calcium > Magnesium > Aluminium > Zinc > Iron > Copper > Silver > Gold.
Explanation:
The reactivity of elements (metals) towards water decreases towards the right in a period. It also increases down the group. But zinc is more reactive towards water than iron. Hence the correct order is:
Iron<Zinc<Magnesium<Sodium
Sodium chloride (NaCl), whose only changes about 5g/100mL water over that entire range 100°C)
Answer:
2H3PO4 +3Ca(OH) 2 = Ca3 (PO4) 2 +6H20
