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Sloan [31]
3 years ago
8

What can you determine about the atomic structure of an element if you know the atomic number of the element and mass number of

its isotope? Enter your answer in the space provided.
Chemistry
1 answer:
Fofino [41]3 years ago
4 0

Answer:

THe atomic number of an element is the same number of protons and electrons the element has.

Explanation:

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1. You put an unknown substance into a graduated cylinder filled with 60 ml of
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A mixture of gases contains 4.46 moles of neon (Ne), 0.74 mole of argon (Ar), and 2.15 moles of xenon (Xe). Calculate the partia
viva [34]

Explanation:

The partial pressure of an individual gas is equal to the total pressure of the mixture multiplied by the mole fraction of the gas.

Total pressure = 2atm

Mole Fraction = number of moles / total number of moles

Neon

Mole Fraction = 4.46 / 7.35 = 0.607

Partial Pressure = 0.607 * 2 = 1.214 atm

Argon

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Xenon

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5 0
3 years ago
in a chemical change how does the total energy of the reactants compare to the total energy of the products
jeka57 [31]

Answer:

Explanation:

All chemical changes requires a substantial amount of energy. Depending on the type of reaction, the energy of reactants and products differs.

In an exothermic chemical change where heat is always given off to the surroundings, the energy of the product is less than that of reactants.

For endothermic changes, the surrounding becomes colder at the end of the reaction. This implies that the heat energy of the product is higher than that of the reactants.

8 0
3 years ago
Which metal reacts spontaneously with a solution containing zinc ions?
nignag [31]
It would be (1) magnesium.
hope this helps :D
3 0
3 years ago
Read 2 more answers
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