The mass of magnesium chloride produced is calculated as follows
write the equation for reaction
Mg +2HCl=MgCl +H2
find the moles of each reactant
moles = mass/molar mass
moles for mass = 32.5 g/24.3 g/mol= 1.34 moles
moles for HCl = 32.5g / 95.3 g/mol=0.89 moles
HCl is the limiting reagent hence by use of mole ratio between HCl to MgCl2 which is 2:1 the moles of MgCl2 is therefore = 0.89/2 =0.445 moles
mass of MgCl2 is therefore= moles/molar mass
=0.445moles x 95.3 g/mol= 42.4 grams of MgCl2
The correct answer is option B, that is, Animalia.
The animals refer to the multicellular eukaryotic species, which forms the biological kingdom known as Animalia. The majority of the animals breathe oxygen, consume organic substances, and possess the tendency to move, has the tendency to reproduce, and develop from a hollow sphere of cells, the blastula at the time of embryonic development. In comparison to Kingdom Plantae, the cells in animals do not exhibit cell wall. Thus, on the basis of the characteristics, the newly discovered species must be categorized under Kingdom Animalia.
Answer:
First, precipitate of AgCl is formed. Second, a soluble complex of silver and ammonia is formed. Third, AgCl is reproduced due to disappearance of ammonia complex in presence of
.
Explanation:
In presence of NaCl,
forms an insoluble precipitate of AgCl.
Reaction: ![Ag^{+}(aq.)+Cl^{-}(aq.)\rightarrow AgCl(s)](https://tex.z-dn.net/?f=Ag%5E%7B%2B%7D%28aq.%29%2BCl%5E%7B-%7D%28aq.%29%5Crightarrow%20AgCl%28s%29)
In presence of
, AgCl gets dissolved into solution due to formation of soluble
complex.
Reaction: ![AgCl(s)+2NH_{3}(aq.)\rightarrow [Ag(NH_{3})_{2}]^{+}(aq.)+ Cl^{-}(aq.)](https://tex.z-dn.net/?f=AgCl%28s%29%2B2NH_%7B3%7D%28aq.%29%5Crightarrow%20%5BAg%28NH_%7B3%7D%29_%7B2%7D%5D%5E%7B%2B%7D%28aq.%29%2B%20Cl%5E%7B-%7D%28aq.%29)
In presence of
,
complex gets destroyed and free
again reacts with free
to produce insoluble AgCl
Reaction: ![[Ag(NH_{3})_{2}]^{+}(aq.)+2H^{+}(aq.)+Cl^{-}(aq.)\rightarrow AgCl(s)+2NH_{4}^{+}(aq.)](https://tex.z-dn.net/?f=%5BAg%28NH_%7B3%7D%29_%7B2%7D%5D%5E%7B%2B%7D%28aq.%29%2B2H%5E%7B%2B%7D%28aq.%29%2BCl%5E%7B-%7D%28aq.%29%5Crightarrow%20AgCl%28s%29%2B2NH_%7B4%7D%5E%7B%2B%7D%28aq.%29)
Answer:
Theoretical yield of NaCl = 877.5 g or 15 moles
Explanation:
Given data:
Number of moles of Na = 15 mol
Number of moles of Cl₂ = 15 mol
Theoretical yield of NaCl = ?
Solution:
Chemical equation:
2Na + Cl₂ → 2NaCl
Now we will compare the moles of Na and Cl₂ with NaCl.
Cl₂ : NaCl
1 : 2
15 : 2/1×15 = 30 mol
Na : NaCl
2 : 2
15 : 15
Less number of NaCl are produced by Na it will act as limiting reactant.
Theoretical yield:
Mass = number of moles × molar mass
Mass = 15 mol × 58.5 g/mol
Mass = 877.5 g
Answer:
Electronegative element form anion that is larger than its neutral atom like fluorine F-
Explanation: