Explanation:
from internet
the act of transferring pollen grains from the male anther of a flower to the female stigma
Answer:
Photovoltaic cell or solar cells
Explanation:
Solar cells are cells that converts light energy from the sun into electrical energy for use in appliances. Light energy impinges on these cells, the photons of light causes electrons in the solar cells to move thereby resulting in the production of electricity in the cells.
Answer:
144.08 g of H₂O
Explanation:
The balance chemical equation for the synthesis of water is as follow;
2 H₂ + O₂ → 2 H₂O
Step 1: <u>Find out moles of H₂O produced as;</u>
According to balance chemical equation,
1 mole of O₂ produced = 2 moles of H₂O
So,
4 moles of O₂ will produce = X moles of H₂O
Solving for X,
X = 4 mol × 2 mol / 1 mol
X = 8 moles of H₂O
Step 2: <u>Calculate Mass of H₂O as;</u>
Mass = Moles × M.Mass
Mass = 8 mol × 18.01 g/mol
Mass = 144.08 g of H₂O
Answer:
a. Sally did not take account the atoms of the compounds, because she only summed Al + O and in the oxide, we have 2 mol of Al and 3 mol of O
b. The conversion factor that Jacob did, was wrong.
Moles must be divided by moles, so they can be cancelled. The correct conversion factor is:
9.45 mol . 102 g / 1 mol = 963.9 g
Explanation:
Al₂O₃ → Aluminum oxide
We determine the molar mass:
Molar mass Al . 2 + Molar mass O . 3
27 g/mol . 2 + 16 g/mol . 3 = 102 g/mol
a. Sally did not take account the atoms of the compounds, because she only summed Al + O and in the oxide, we have 2 mol of Al and 3 mol of O
b. The conversion factor that Jacob did, was wrong.
Moles must be divided by moles, so they can be cancelled. The correct conversion factor is:
9.45 mol . 102 g / 1 mol = 963.9 g
