Answer:
Mg> H> Cu
Explanation:
We can see from the question that hydrochloric acid reacted with magnesium as follows;
Mg(s) + 2HCl(aq) ----> MgCl2(aq) + H2(g)
Copper does not react with HCl which means that copper is less reactive than hydrogen hence it can not displace hydrogen from a dilute acid solution.
The order of reactivity of the elements then is ; Mg> H> Cu
You just let it get colder, and the fat should stay on the top of the gravy.
Then you just have to take it away......
Potential energy because it’s a tense spring
Answer:
Ca(OH)2 + 2HNO3, → 2H2O+ Ca(NO3)2
Explanation:
The last option is correctly balanced
Answer:
The second period starts with Lithium and Beryllium which have 3 and 4 electrons and hence the last electrons enter the level 2s and they have an electronic configuration of 1s22s1 and 1s22s2