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Scrat [10]
3 years ago
13

What chemical configuration has a mass number of 113 contains 46 electrons and 48 protons​

Chemistry
1 answer:
sweet [91]3 years ago
3 0
Cd+2 is the answer. Hope it helps
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When 412.5 g of calcium carbonate react with 521.9 g of aluminum fluoride, how many
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Answer
321.8 g CaF2
321.5 g Al2(CO3)3
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3 years ago
After the hare population increased, what happened to the lynx population? Why?
Westkost [7]
The lynx population increased as well because hare are the prey and the lynx are the predators.
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3 years ago
Please help, there is a picture with the question
alexgriva [62]

Answer:

Bromine

Explanation:

They are in the same collumn and elements share the most properties with those in their family

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3 years ago
The wave mechanical model of the atom is required to explain the
dlinn [17]

The wave-mechanical model of the atom is required to explain the spectra of elements with multi electron atoms.

<u>Explanation:</u>

Wave mechanical theory say that every electron surrounding a nucleus occupies a certain orbit and moves in a certain direction, but the orbit is like a wave of energy or cloud but not a ring. It was proposed in the 1920s, when scientists Erwin Schrodinger and Louis Victor de Broglie concluded that the Bohr’s model is not suitable for electron location determination.

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7 0
3 years ago
Calculate the fraction of atoms in a sample of argon gas at 400 K that have an energy of 10.0 kJ or greater.
nikdorinn [45]

Answer:

The answer to this can be arrived at by clculating the mole fraction of atoms higher than the activation energy of 10.0 kJ by pluging in the values given into the Arrhenius equation. The answer to this is 20.22 moles of Argon have energy equal to or greater than 10.0 kJ

Explanation:

From Arrhenius equation showing the temperature dependence of reaction rates.

K = Ae^{\frac{Ea}{RT} } where

k = rate constant

A = Frequency or pre-exponential factor

Ea   =       energy of activation

R = The universal gas constant

T = Kelvin absolute temperature

we have

f = e^{\frac{Ea}{RT} }

Where

f = fraction of collision with energy higher than the activation energy

Ea = activation energy = 10.0kJ = 10000J

R = universal gas constant = 8.31 J/mol.K

T = Absolute temperature in Kelvin = 400K

In the Arrhenius equation k = Ae^(-Ea/RT), the factor A is the frequency factor and the component e^(-Ea/RT) is the portion of possible collisions with high enough energy for a reaction to occur at the a specified temperature  

Plugging in the values into the equation relating f to activation energy we get

f = e^{\frac{10000J}{(8.31J/((mol)(K)))(400K)} } or f = e^{3.01} = 20.22 moles of argon have an energy of 10.0 kJ or greater

5 0
3 years ago
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