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pentagon [3]
3 years ago
9

The number of protons in an uncharged atom _____. the number of protons in an uncharged atom _____. determines its mass number e

quals the number of neutrons varies with the different isotopes equals the total number of electrons in the orbital shells
Chemistry
1 answer:
Andrews [41]3 years ago
4 0

The number of protons in an uncharged atom equals the number of electrons.

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Select the answer which shows the correct order, slowest to fastest, of the relative rate of diffusion of the gases.
Eddi Din [679]
The heavier the gas is, the slower the gas will diffuse.  the correct order is Kr, Ar, Ne, N based off of the atomic weight.  However I don't think N is a gas.  Nitrogen is diatomic so it should be N₂.

I hope this helps. 
3 0
3 years ago
Read 2 more answers
What is the predominant intermolecular force in the liquid state of each of these compounds: ammonia (nh3), carbon tetrachloride
Kay [80]
  • NH₃: Hydrogen bonds;
  • CCl₄: London Dispersion Forces; (a.k.a. Induced dipole)
  • HCl: Dipole-dipole Interactions.
<h3>Explanation</h3>

Relative strength of intermolecular forces in small molecules:

Hydrogen bonds > Dipole-dipole interactions > London DIspersion Forces.

It takes two conditions for molecules in a substance to form <em>hydrogen bonds</em>.

  • They shall contain at least one of the three bonds: H-F, O-H, or N-H.
  • They shall contain at least one lone pair of electrons.

NH₃ contains N-H bonds. The central nitrogen atom in an NH₃ molecule has one lone pair of electrons. NH₃ meets both conditions; it is capable of forming hydrogen bonds.

CCl₄ molecules are nonpolar. The molecule has a tetrahedral geometry. Dipole from the polar C-Cl bonds cancel out due to symmetry. The molecule is nonpolar overall. As a result, only London Dispersion Force is possible between CCl₄ molecules.

HCl molecules are polar. The H-Cl bond is fairly polar. The HCl molecule is asymmetric, such that the dipole won't cancel out. The molecule is overall polar. Both dipole-dipole interactions and London Dispersion Force are possible between HCl molecules. However, dipole-dipole interactions are most predominant among the two.

5 0
3 years ago
Please help I will mark you brainiest
arlik [135]

Answer:asexual- Energy is not required to find a mate. Offspring are genetic clones. A negative mutation can make asexually produced organisms susceptible to disease and can destroy large numbers of offspring. Some methods of asexual reproduction produce offspring that are close together and compete for food and space.

Explanation:During sexual reproduction the genetic material of two individuals is combined to produce genetically diverse offspring that differ from their parents.

8 0
3 years ago
As a science major, you are assigned to the "Atomic Dorm" at college. The first floor has one suite with one bedroom that has a
lidiya [134]

Explanation:

A.

The first student will be on the lower bunk on the first floor because 1. They want on the lowest available floor and 2. They want to be in a lower bunk if available.

B.

7 students are in the TOP bunks because 1. They want on the lowest available floor and 2. They want to be in a lower bunk if available. Therefore, all the rooms up till the third floor (Remember, third floor has 3 suites), so the first floor is filled - 1 person on the top bunk, 2 floor is filled- 4 persons and the third floor; the first suite is filled - 1 person and the second suite is a little partially filled- 1 person.

C.

Following the criteria 1, 2 and 3, the 21st student occupies the third suite on the third floor because all the floors (1 and 2) are occupied so the third suite on the third floor is still vacant.

D.

From the criteria there are therefore 10 persons at the TOP bunk. All the rooms up till the third floor are filled, so the first floor is filled - 1 person on the top bunk, second floor is filled (2 suites) - 4 persons and the third floor; the first suite and second suite is filled - 4 persons; the thirs suite has 6 persons present so 1 person is at the top bunk.

8 0
4 years ago
a 9.84 ounces ingot of unknown metal is heated from 73.2 degrees fahrenheit - 191.2 degrees fahrenheit this requires 3.912 calor
Gekata [30.6K]

The SI unit of specific heat is J per gram per degree Celsius. Thus it follows that specific heat could be calculated in this way:

Specific Heat = Energy / (mass x change in temperature)

Thus,

Specific Heat = 3.912 cal / (9.84 oz x (191.2 ˚F – 73.2 ˚F))

Specific Heat = 3.369 x 10^-3 cal/oz-˚F

6 0
4 years ago
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