Could you please mark me as brainliest?
Answer: 160.40 g Fe2O3 are needed.
Explanation:
Balanced equation: 2 Al + Fe2O3 —> Al2O3 + 2Fe
54.2 g Al * 1 mol Al / 26.98 g Al * 1 mol Fe2O3 / 2 mol Al * 159.69 g Fe2O3 / 1 mol = 160.40 g Fe2O3 are needed.
BF3 acts as a Lewis acid when it accepts the lone pair of electrons that NH3 donates.
Answer:
TRUE
Explanation:
Glass spun into fine fibers is called fiberglass and is commonly used as an insulator.
Magnesium atom
hope that helps!
For better representation, the electronic configuration is written as:
<span>1s</span>²<span>2s</span>²<span>2p</span>⁶<span>3s</span>²<span>3p</span>⁶<span>4s</span>²<span>3d</span>¹⁰<span>4p</span>⁶<span>5s</span>²<span>4d</span>⁸
The letters s, p, d and f are subshells while the number coefficients represent the energy levels. Each subshell holds a specific maximum number of electrons, which is represented by the exponents. Thus, you add the exponents to determine the atomic number:
Atomic number = 2+2+6+2+6+2+10+6+2+8 = 46
From the periodic table, element 46 is Palladium or Pd.
