Answer: 228.8 gExplanation:1) Chemical equation, balanced: given

2) mole ratios
2 mol H2O2 : 2 mol H2O :1 mol O2
3) proportion with the unknown quantity of O2:
2 mol H2O2 14.3 mol H2O2
------------------- = -----------------------
1mol O2 x
4) Solve for x:
x = 14.3 mol H2O2 * 1 mol O2 / 2 mol H2O2 = 7.15 mol O2
5) Convert 7.15 mol O2 to grams
molar mass = mass in grams / number of moles
=> mass in grams = number of moles * molar mass
molar mass of O2 = 2 * 16.00 g/mol = 32.00 g/mol
mass in grams O2 = 7.15 moles * 32.00 g / mol = 228.8 g
Answer: 228.8 g
B is correct. cause with microscope you look at the surface
Organic fertilizers are made from mined rock minerals, and natural plant and animal materials. They include ingredients like manure, guano, dried and powdered blood, ground bone, crushed shells, finely pulverized fish, phosphate rock, and wood.
Inorganic fertilizer is synthetic, comprised of minerals and synthetic chemicals. Most of the minerals in inorganic fertilizer are mined from the earth, and balanced inorganic fertilizers are high in all three macronutrients and can contain ammonium sulfate, magnesium sulfate, and potassium chloride.
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Oxygen was first produced via photosynthesis as ocean microbes evolved in the event that was called the Great Oxidation Event. Therefore the correct answer is C