Answer:
2K + 2H2O → H2 + 2KOH
Explanation:
Find how many atoms you have on both sides then add 2 to both sides.
Reactant: Products:
K: 1+1=2 K: 1+1=2
H: 2+2=4 H: 3+1=4
O: 1+1=2 O: 1+1=2
Therefore it is balanced. Hope this helps
Answer : The mass of NaCl required are 14.61 grams
Explanation : Given,
Molar mass of NaCl = 58.44 g/mole
Volume of solution = 500.00 mL
Molarity of NaCl = 0.5 M = 0.5 mole/L
Molarity : It is defined as the number of moles of solute present in 1 liter of solution.
Formula used :
Now put all the given values in this formula, we get:
Therefore, the mass of NaCl required are 14.61 grams
Answer:
The new pressure is 1,67atm
Explanation:
In this case, having constant temperature we apply Boyle Mariotte's Law, where the volume varies inversely proportional to the pressure: P1 xV1 = P2xV2. We pass the pressure unit from Torr to atm: 760 Torr = 1atm
P1 xV1 = P2xV2 --> P2=P1 xV1/V2
P2= 1 atm x 5,00L/3, 00L=1, 67 atm
Explanation:
Moles of KCl in new solution = 0.325dm³ * (2.76mol/dm³) = 0.897mol.
Hence volume needed = 0.897mol / (3.95mol/dm³) = 0.227dm³ or 0.227L.
I’ve only had one and it didn’t flow so ion think so