No technically without buying anything your hair will not grow .
Answer:
74.75%
Explanation:
To calculate this, we simply add the mass of the salicylic acid and the mass of the copper sulphate.
The addition will yield the following.
Mass of salicylic acid recovered = 0.586g
Mass of copper sulphate recovered = 3.12g
The addition of both is = 0.586g + 3.12g = 3.706g
The percentage composition can be calculated by dividing this by the original mass of the mixture before crystallization and dividing by 100.
3.706/4.958 * 100 = 74.75%
Answer:
Oxygen can get into the water in several ways: Oxygen from the atmosphere dissolves and mixes into the water's surface. Algae and underwater grasses release oxygen during photosynthesis. Water flows into the Bay from streams, rivers and the ocean.
Explanation:
Something that breaks with little force against it.
The mass for of aluminum that is produced by the decomposition of 5.0 Kg Al2O3 is 2647 g or 2.647 Kg
calculation
Write the equation for decomposition of Al2O3
Al2O3 = 2Al + 3 O2
find the moles of Al2O3 = mass/molar mass
convert 5 Kg to g = 5 x1000 = 5000 grams
molar mass of Al2O3 = 27 x2 + 16 x3 = 102 g/mol
moles =5000 g/ 102 g/mol = 49.0196 moles
by use of mole ratio between Al2O3 to Al which is 1:2 the moles of Al = 49.0196 x2 =98.0392 moles
mass of Al = moles x molar mass
= 98.0392 moles x 27g/mol = 2647 grams or 2647/1000 = 2.647 Kg