Answer: 10.62g
Explanation:
First let us generate a balanced equation for the reaction.
HCl + NaOH —> NaCl + H2O
Molar Mass of HCl= 1 + 35.5 = 36.5g/mol
Molar Mass of NaOH = 23 + 16 + 1 = 40g/mol
From the question,
Mass of HCl = 17g
Mass of NaOH = 6.99g
Converting these Masses to mole, we obtain:
n = Mass / Molar Mass
n of HCl = 17/36.5 = 0.4658mol
n of NaOH = 6.99/40 = 0.1748mol
From the question,
1 mole of NaOH requires 1mole of HCl.
Therefore, 0.1748mol of NaOH will also require 0.1748mol of HCl.
But we were told that 17g( i.e 0.4658mol) of HCl were mixed.
Therefore, the unreacted amount of HCl = 0.4658 — 0.1748 = 0.291mol
Converting this to mass, we have:
Mass of HCl = n x molar Mass
Mass of HCl = 0.291 x 36.5
Mass of HCl = 10.62g
Therefore the left over Mass of HCl is 10.62g
To neutrilize you meed equal moles of H+ and OH - so they are converted into water. 2.0 M * 0.036= 0.072 moles of NaOH and moles of NaOH = moles of OH- . So 0.072 moles of H+ are needed so 1.5*x=0.072. X= 0.048 Liters of HCl (aq)
Answer:
24 g of C are needed to produce 1mol of CH₄
Explanation:
The reaction is:
2C (s) + 2H2O (l) → CH4(g) + CO2 (g)
2 moles of carbon react with 2 moles of water in order to produce 1 mol of methane and 1 mol of carbon dioxide.
If we want to produce 1 mol of methane, we need 2 moles of C
Let's find out the mass → 2 mol . 12 g/1 mol = 24g
Answer:
try to see THE PIXELS, AVENGERS, JOKER, CHARLIE'S ANGEL, JUSTICE LEAGUE,IT ,THE NUN ETC
3Zn + 8HNO₃⇒ 3Zn(NO₃)₂ + 2NO + 4H₂O
<h3>Further explanation
</h3>
Equalization of chemical reaction equations can be done using variables. Steps in equalizing the reaction equation:
- 1. gives a coefficient on substances involved in the equation of reaction such as a, b, or c etc.
- 2. make an equation based on the similarity of the number of atoms where the number of atoms = coefficient × index between reactant and product
- 3. Select the coefficient of the substance with the most complex chemical formula equal to 1
For gas combustion reaction which is a reaction of hydrocarbons with oxygen produces CO₂ and H₂O (water vapor). can use steps:
Balancing C atoms, H and the last O atoms
Reaction
Zn + HNO₃⇒ Zn(NO₃)₂ + NO + H₂O
aZn + bHNO₃⇒ Zn(NO₃)₂ + cNO + dH₂O
Zn : left = a, right =1 ⇒a=1
H : left = b, right = 2d⇒ b=2d (eq 1)
N : left = b, right = 2+c⇒b=2+c (eq 2)
O : left = 3b, right = 6+c+d ⇒3b=6+c+d(eq 3)
3(2d)=6+c+d
6d=6+c+d
5d=6+c (eq 4)
3(2+c)=6+c+d
6+3c=6+c+d
2c=d (eq 5)
5(2c)=6+c
10c=6+c
9c=6
c = 2/3
d = 2 x 2/3
d = 4/3
b = 2 x 4/3
b = 8/3
The equation
aZn + bHNO₃⇒ Zn(NO₃)₂ + cNO + dH₂O to
Zn + 8/3HNO₃⇒ Zn(NO₃)₂ + 2/3NO + 4/3H₂O x 3
3Zn + 8HNO₃⇒ 3Zn(NO₃)₂ + 2NO + 4H₂O