• a fuel gas consisting mainly of carbon monoxide and hydrogen, made by passing steam over incandescent coke
• the cranium and the mandible.
hope it helps...!!!
Answer:
HCl conc.= 6.0mol/L
Explanation:
From the dissociation of HCl= 1 mole H+ and 1mol Cl-, which is equivalent stoichiometrically in concentration to that of 1 mol HCl,
<span>C8H10N4O2
Or do you want it in a reaction problem?
</span>
Answer:
a) Step 1:
![2PbS(g)+3O_2(g)\overset{roasting}\rightarrow 2PbO(s)+2SO_2(g)](https://tex.z-dn.net/?f=2PbS%28g%29%2B3O_2%28g%29%5Coverset%7Broasting%7D%5Crightarrow%202PbO%28s%29%2B2SO_2%28g%29)
Step 2:
![2PbO(s)+PbS(s)\overset{\Delta }\rightarrow 3Pb(l)+SO_2(g)](https://tex.z-dn.net/?f=2PbO%28s%29%2BPbS%28s%29%5Coverset%7B%5CDelta%20%7D%5Crightarrow%203Pb%28l%29%2BSO_2%28g%29)
b) The overall balanced reaction for given process is ;
![3PbS(s)+3O_2(g)\rightarrow 3Pb(l)+3SO_2(g)](https://tex.z-dn.net/?f=3PbS%28s%29%2B3O_2%28g%29%5Crightarrow%203Pb%28l%29%2B3SO_2%28g%29)
Explanation:
a)
Galena = ![PbS](https://tex.z-dn.net/?f=PbS)
Lead(II) oxide = ![PbO](https://tex.z-dn.net/?f=PbO)
Sulfur dioxide = ![SO_2](https://tex.z-dn.net/?f=SO_2)
Step 1:
Roasting the galena in oxygen gas to form lead(II) oxide and sulfur dioxide.
Balanced equation of step 1:
..[1]
Step 2:
Heating the metal oxide with more galena forms the molten metal and more sulfur dioxide.
Balanced equation of step 2:
..[2]
b)
For over all reaction add [1] and [2]. The overall balanced reaction for given process is ;
![3PbS(s)+3O_2(g)\rightarrow 3Pb(l)+3SO_2(g)](https://tex.z-dn.net/?f=3PbS%28s%29%2B3O_2%28g%29%5Crightarrow%203Pb%28l%29%2B3SO_2%28g%29)
Answer:
c. I, Br, Cl
Explanation:
The option C group of elements is expected to have the highest ionization energy.
Ionization energy is the energy needed to remove the most loosely held electron from an atom.
- As such, ionization energy increases from left to right on the periodic table.
- It reduces from top to bottom
- The groups to the right will not readily lose their electrons.
- Therefore, I, Br and Cl being in group 7 will have the highest ionization energy.