2 H₂O (l) → 2 H₂ (g) + O₂ (g)
Molar mass water = 1.01 x 2 + 16.00 = 18.02 g/mol
Number of mol water decomposed = 28.7 g H₂O x [1 mol / 18.02g] = 1.59 mol H₂O
<span>From the balanced equation 2 mol H₂O decomposes to 2 mol H₂ and 1 mol O₂ </span>
so the mole ratio water : oxygen = 2 : 1
and number of mol O₂ produced = ½ x 1.59 = 0.796 mol O₂
The ideal gas law is PV = nRT
so V = nRT/P
P = 0.986 atm
V = ?
n = 0.796
R = 0.0821 L atm K⁻¹ mol⁻¹
T = 294K
V = 0.796 x 0.0821 x 294 / 0.986
V = 19.5 L
<span>So 19.5 L O₂ gas are produced
I hope my answer has come to your help. Thank you for posting your question here in Brainly.
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Potassium Hydroxide is the name thats should be used
Answer:
0.28moles of silicon
Explanation:
Given parameters:
Number of molecules of silicon = 1.7 x 10²³molecules
Unknown:
Number of moles of the silicon = ?
Solution:
A mole of any substance contains the Avogadro's number of particles.
1 mole of a substance contains 6.02 x 10²³molecules;
So;
1.7 x 10²³molecules contains 
= 0.28moles of silicon
Answer:
Natural gas is environmentally friendly because it burns cleaner than other fossil fuels. It's safer and easier to store when compared to other fossil fuels. Natural gas is extremely reliable, unlike electric power that can be knocked out during a storm. Natural gas is less expensive than other fossil fuels.
Explanation:
Answer:
NaCN- basic salt
KNO3 - neutral salt
NH4Cl - acid salt
NaHCO3 - acid salt
Na3PO4 - acid salt
Explanation:
Salt hydrolysis a process by which salts react with water giving an acid and a base.
When we dissolve NaCN in water, we have;
NaCN + - ⇄ Na^+ + CN^-
KNO3 ------> K^+ + NO3^-
NH4Cl ------> NH4^+ + Cl^-
NaHCO3 -----> Na^+ + HCO3^-
Na3PO4 ----> 3Na^+ + PO4^3-
Note that if a salt is formed from a weak acid and a strong base, the salt will be a basic salt e.g NaCN formed from weak HCN and strong NaOH.
If a salt is formed from a strong acid and weak base, the salt will be acidic, e.gNH4Cl formed from weak NH3 and strong HCl.
If a salt is formed from a strong acid and strong base, the salt will be neutral, e.g KNO3 formed from strong KOH and strong HNO3.
