Answer:
forces is a push or pull upon an object which the object is being interacted
dont see the following objects but made a black hole or a huge object or a hevey object
Explanation:
Answer: 228.8 g of O2 are produced
Work:
1) Write the give balanced chemical equation:
2H2O2 → 2H2O + O2
2) molar ratios
2 mol H2O2 : 2 mol H2O :1 mol O2
3) proportion with the unknown quantity number of moles of O2:
x 1 mol O2
---------------------- = -----------------------
14.3 mol H2O2 2 mol H2O2
4) Solve for x:
x = 1 mol O2 * 14.3 mol H2O2 / 2 mol H2O2 = 7.15 mol O2
5) Use the molar mass of O2 to convert 7.15 mol O2 to grams
molar mass of O2 = 2 * atomic mass of O = 2 * 16.00 g/mol = 32.00 g/mol
molar mass = mass in grams / number of moles
=> mass = molar mass * number of moles
mass of O2 = 32.00 g / mol * 7.15 mol = 228.8 g
Answer: 228.8 g
Answer:
The answer to your question is m = 1.6
Explanation:
Data
mass of NaCl = 111 g
volume of water = 1.2 L
Molality = ?
Formula
Molality = number of moles / volume (L)
Process
1.- Calculate the moles of NaCl
Molecular mass = 23 + 35.5 = 58.5 g
1 mol of ------------------- 58.5 g
x -------------------- 111 g
x = (111 x 1) / 58.5
x = 1.897 moles of NaCl
2.- Calculate the mass of water
density of water = 997 kg/m³
mass = volume x density
mass = 0.0012 x 997
mass = 1.19 kg
3.- Calculate molality
m = 1.897/1.19
m = 1.6
Answer:
Synchronous rotation is the result of tidal forces that over time slow the rotation of the smaller body until it is synchronized with its period of revolution around the larger body.
Explanation:
Answer:
The low light eye sight depends on the rod cells of the eye,and the birds have more amount of rod cell in their eyes, that's why they have an extraordinary night vision
