Find the molar mass of Fe_2O_3
2Fe = 2*56 = 112
3O = 3* 16 = 48
Molar Mass = 160 grams
moles= given mass / molar mass
moles = 28 / 160
moles = 0.175 <<<< answer
He, because it’s a noble gas which they have full valence electrons (occupied energy levels)
Answer:
1. Element - a substance that is made from only one type of atom
An element is made up of only one type of atoms and known for its unique properties than other elements.
2. Heterogeneous - composed of dissimilar parts which can be separated easily and which are unevenly distributed in the mixture
3.Homogenous - even distribution of parts throughout the whole mixture; not easily separated into individual components.
4. Product - the substance created as a result of a chemical reaction
Products are the final substance that created as a result of a chemical reaction.
5. Reactant - one of the starting substances (ingredients) that is involved in a chemical reaction
Reactants are the starting substance that takes part in a chemical reaction.
6. Solute - the substance that is being dissolved.
A Solute is a substance that is being dissolved in the solvent to make a solution.
7. Solvent - the substance that does the dissolving
A solvent is the medium in which the solute is being dissolved to make the solution.
It's a radioactive chemical element. It's symbol is AM and the atomic number is 95. It is a transuranic member of the actinide series, in the periodic table located under the lanthanide element europium, and thus by analogy was named after the Americas.
Answer:
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