Answer:
6
Explanation:
number of protons equal number of electrons for the atom to be stable
Answer:
400 mL
Explanation:
Given data:
Mass of barium = 2.17 g
Pressure = 748 mmHg (748/760 = 0.98 atm)
Temperature = 21 °C ( 273+ 21 = 294k)
Milliliters of H₂ evolved = ?
Solution:
chemical equation:
Ba + 2H₂O → Ba(OH)₂ + H₂
Number of moles of barium:
Number of moles = mass/ molar mass
Number of moles = 2.17 g / 137.327 g/mol
Number of moles = 0.016 mol
Now we will compare the moles of barium with H₂.
Ba : H₂
1 : 1
0.016 : 0.016
Milliliters of H₂:
PV = nRT
V = nRT/P
V = 0.016 mol × 0.0821 atm. mol⁻¹.k⁻¹.L×294 k/0.98 atm
V = 0.39 atm. L/0.98 atm
V = 0.4 L
L to mL
0.4 × 1000 = 400 mL
Answer:
m risus ante, dapibus a ipsum dolor sit amet, add cream or a great slaughter. Fusce dui lectus, laoreet congue vel, it was said of life in hatred. Until the bananas. Lorem ipsum dolor sit amet, consectetur adipiscing elit. In fact, lacinia pulvinar dolor libero facilisis. Nutrition protein produced et. In fact, risus ante, dapibus a ipsum dolor sit amet, add cream or a great slaughter. Fusce dui lectus, laoreet congue vel, it was said of life in hatred. Until the bananas. Lorem ipsum deceit
Explanation: