Softwood ( like pine ) hardwood ( like oak )
Its quite alot of work, but here it is....
1. Silver Nitrate: AgNO3 (aq)
<span>Potassium Chloride: KCl </span>
<span>To do a double replacement reaction, switch the two metals around, in this case Silver and Potassium so you are left with: </span>
<span>Potassium Nitrate: KNO3 </span>
<span>Silver Chloride: AgCl </span>
<span>The chemical equation should be something like this: </span>
<span>AgNO3 (aq) + KCl => KNO3 + AgCl
</span>
2The chemical reaction is as follows:Al2(SO4)3 + 3Ca(OH)2 → 3CaSO4 + 2Al(OH)3 Explanation:1mol of Al2(SO4)3 will react with 3mol Ca(OH)2 to produce 3mol CaSO4 and 2 mol Al(OH)3.First we have to find the number of moles of Al2(SO4)3 :Number of moles = Mass/ Molar massMass of Al2(SO4)3 = 500gMolar mass of Al2(SO4)3 = 342.15 g/molNumber of moles = 500/342.15Number of moles = 1.461 mol Al2(SO4)3Multiplying the coeffecient of Ca(OH)2 with 1.461:= 3*1.461 = 4.383 mol Ca(OH)2 Now we have to find the number of moles of Ca(OH)2:Mass of Ca(OH)2 = 450gMolar mass of Ca(OH)2 = 74.09 g/mol Number of moles = 450/74.09Number of moles = 6.074 mol Ca(OH)2We need 4.383mol to react completely with the Al2(SO4)3, so the Ca(OH)2 is in excess, and the Al2(SO4)3 is the limiting reactant. Excess unreacted: 6.074-4.383 = 1.69mol Ca(OH)2 unreacted
Answer:
The parts of an atom cannot be directly observed.
Explanation:
An atom is the smallest indivisible particle of a substance that can take part in a chemical reaction.
Atoms are not observed with naked eyes because they are found in the realm of very small particles. It is impossible to observe the parts of an atom directly.
As a result of this, models suffice in explaining the parts of an atom. Hence the answer.
Answer:
Wind is an emissions-free source of energy
Overall, using wind to produce energy has fewer effects on the environment than many other energy sources. Wind turbines do not release emissions that can pollute the air or water (with rare exceptions), and they do not require water for cooling.
Explanation:
Answer:
60.87 ft/s
Explanation:
Speed is defined as a ratio between the distance traveled and time. Given a total distance of:
Let's convert it into feet first of all using the conversion factor:
We obtain:
Now let's convert the given time into seconds knowing that:
Then:
Now let's find the speed: