Answer:
Isotopes are the atom of an element that have different numbers of neutrons but have a similar number of protons and electrons. The difference in the number of neutrons between the various isotopes means that various isotopes have different masses.
Explanation:
A) Low ionization energy correlates to elements with fewer valence electrons.
Ionization energy is the energy required to separate valence electrons from their atom. The more valence electrons there are, the higher the ionization energy.
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Answer:
The limiting reagents seemed to be those that were consumed first
.
Because when this reagent is consumed, the reaction stops. The quantity of this determines the total quantity of the product formed.
Explanation:
A limiting reagent is one that is consumed in its entirety. In this way, it delimits the amount of product that can be formed.
Take the case of two substances that interact and produce a chemical reaction. If one of the substances runs out as it is consumed during the process, the reaction will stop. The reagent consumed acts as a limiting reagent, that is, it limits the possibility of the reaction proceeding, and therefore it also limits the amount of the product generated by the reaction.
Answer: 0.208 M
Explanation:
Convert NaHCO3 to moles.
Molarity is moles over liters.
3.25 kg in g = 3.25 * 1000 = 3250 g
Molar mass C₂H₆O₂ = 62.0 g/mol
Mass solvent = 7.75 kg
Number of moles:
n = mass solute / molar mass
n = 3250 / 62.0
n = 52.419 moles
Molality = moles of solute / kilograms of solvent
M = 52.419 / 7.75
M = 6.7637 mol/kg
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