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Eddi Din [679]
3 years ago
7

If an atom has 34 electrons, 46 neutrons, and 34 protons, what is its mass number? what is the name of the element?

Chemistry
1 answer:
OleMash [197]3 years ago
7 0
Mass number = protons + neutrons = 34+46 =80

the element with an atomic number of 34 and mass number of 80 is selenium
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If 1.20 moles of an ideal gas occupy a volume of 18.2 l at a pressure of 1.80 atm, what is the temperature of the gas, in degree
scoundrel [369]

We can calculate for temperature by assuming the equation for ideal gas law:

P V = n R T

Where,

P = pressure = 1.80 atm

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R = gas constant = 0.08205746 L atm / mol K

Substituting to the given equation:

T = P V / n R

T = (1.8 atm * 18.2 L) / (1.2 moles * 0.08205746 L atm / mol K)

T = 332.70 K

We can convert K unit to ˚C unit by subtracting 273.15 to Kelvin, therefore

T = 59.55 ˚<span>C</span>

6 0
3 years ago
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Answer:

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Explanation:

   

5 0
3 years ago
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slavikrds [6]

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In the asked question, it is given that the water is the solvent and from the given solutes we have to pick which would make an aqueous solution with the highest concentration of solute possible.

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6 0
3 years ago
Can someone help me ​
iogann1982 [59]

Answer:

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Explanation:

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