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GarryVolchara [31]
2 years ago
6

Ldentify the atom whose nucleus is composed of 56 protons and 82 neutrons.

Chemistry
1 answer:
kenny6666 [7]2 years ago
4 0

Answer:

Barium-138

Explanation:

The mass number is the atomic number + the number of neutrons. ... Identify the atom whose nucleus is composed of 56 protons and 82 neutrons. Barium-138 (the number of protons identifies the atom) Gallium has two naturally occurring isotopes: Ga-69 with a mass of 68.9256 amu and a natural abundance of 60.11% and Ga-71.

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Should the density of a metal depend on its volume?
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Answer:

Density is the ratio of the mass of an object to its volume. Density is an intensive property, meaning that it does not depend on the amount of material present in the sample. ... Since a cubic centimeter is equal to a milliliter, density units can also be expressed as g/mL.

Explanation:

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3 years ago
Calculate the volume 3.00 moles of a gas will occupy at 24.0˚C and 1.003 atm. *
vitfil [10]

Answer: 72.93 litres

Explanation:

Given that:

Volume of gas (V) = ?

Temperature (T) = 24.0°C

Convert 24.0°C to Kelvin by adding 273

(24.0°C + 273 = 297K)

Pressure (P) = 1.003 atm

Number of moles (n) = 3 moles

Molar gas constant (R) is a constant with a value of 0.0821 atm L K-1 mol-1

Then, apply ideal gas equation

pV = nRT

1.003 atm x V = 3.00 moles x 0.0821 atm L K-1 mol-1 x 297K

1.003 atm•V = 73.15 atm•L

Divide both sides by 1.003 atm

1.003 atm•V/1.003 atm = 73.15 atm•L/1.003 atm

V = 72.93 L

Thus, the volume of the gas is 72.93 litres

5 0
3 years ago
The word elliptical refers to what type of shape?
DerKrebs [107]
The word elliptical refers to regular ovals.
3 0
3 years ago
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Hybrid orbitals of the sp3d type occur in sets of four. True or False?
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well , it's true because they are of sp3d type occur on sets of four

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3 years ago
A student places a warm can of soda into a bucket filled with cold water.
olya-2409 [2.1K]

Answer:

She puts the lid on the bucket. Which of the following describes the energy transfer between the water and the can of soda in the bucket? Thermal energy is transferred from the can of soda to the water so the can of soda gets cooler and the water stays the same temperature

Explanation:

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2 years ago
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