Answer : The correct option is, (2) Cr (Chromium)
Explanation :
The reactivity series of metal are arranged of the reactivity from the highest to the lowest. Reactivity series is used to determine the products of the single displacement reactions. In the single displacement reaction, the most reactive metal displaces the least reactive metal.
From the given reactivity series we conclude that there are two metal (Mg and Cr) are more reactive metal than the Ni and there are two metal (Pb and Cr) are less reactive metal than the Zn. So, the Cr (Chromium) is the metal which is more active than Ni and less active than Zn.
Hence, the correct option is, (2) Cr
I got <span>0.00125 hm . Hope I helped, and good luck(: </span>
Answer:
Well ammonia and bleach Will kill yoi
Explanation:
In determining a concentration, we need to convert the result into Grams / Liter
We already have the correct conversion of the weight , now we just need to convert the water volume into Liter :
185.8 / 1000 = 0.1858 L
The concentration is :
weight / volume
= 13.7 gram / 0.1858 L
= 73.73 gram/liter