Answer:
In oxidation reduction reactions, one species gets reduced by taking on electron(s) and another species gets oxidized by losing electrons. They also flow by a wire
Explanation:
Answer:
Mass of sodium chloride decomposed = 24.54 g
Explanation:
Given data:
Mass of sodium chloride decomposed = ?
Mass of chlorine gas formed = 15 g
Solution:
Chemical equation:
2NaCl → 2Na + Cl₂
Number of moles of Cl₂:
Number of moles = mass/molar mass
Number of moles = 15 g/ 71 g/mol
Number of moles = 0.21 mol
Now we will compare the moles of Cl₂ with NaCl from balance chemical equation.
Cl₂ : NaCl
1 : 2
0.21 : 2×0.21 = 0.42 mol
Mass of Sodium chloride decompose:
Mass = number of moles × molar mass
Mass = 0.42 mol × 58.44 g/mol
Mass = 24.54 g
A mixture that isn't the same throughout. Example: beef stew. Or a water & oil mixture.
The opposite of heterogeneous is homogenous - which would be water, soda, HCl, etc
Answer:
0.84 moles
Explanation:
from the equation 2 moles of pentanol generated 10 moles of CO2 therefore, x mol of pentanol will generate 4.2mol of CO2.
making x the subject of formula=4.2*2/10
=0.84 moles of
pentanol
Answer:
n = 1.89 mol.
Explanation:
Think of this as adiabatic free expansion. This means constant temperature -- we know this because the internal energy does not change.
Since the temperature is constant, the entropy change can be given by:
Entropy = nRln(V2/V1)
Entropy = 17.28 J/K. R = 8.314 (gas constant). V2 = 3V. V1 = V.
Thus, we get:
17.28 = n(8.314)ln3
Solve for n. We get n = 1.89 mol.