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Anastaziya [24]
3 years ago
12

The Bohr model of the atom explained why emission spectra are discrete. It could also be used to explain the photoelectric effec

t. Which is a correct explanation of the photoelectric effect according to the model?
a)Electrons are emitted with more speed when brighter light strikes them.
b)Electrons need small amounts of energy to be released from an atom.
c)Electrons move between levels only if they are hit by the right frequency of light.
d)Electrons need specific amounts of energy to "jump" off an atom and be emitted.
Chemistry
2 answers:
muminat3 years ago
8 0
<span>d)Electrons need specific amounts of energy to "jump" off an atom and be emitted.</span>
asambeis [7]3 years ago
4 0
<span>The Bohr model of the atom explained why emission spectra are discrete. It could also be used to explain the photoelectric effect. A correct explanation of the photoelectric effect according to the model is D. electrons need specific amounts of energy to "jump" off an atom and be emitted.</span>
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Confused as heck. please help!
Nitella [24]

Answer: that all thre water cycle and C is vaporation

Explanation:

6 0
2 years ago
Which diagram shows the correct direction of electron flow in an electrolytic cell?
Alborosie

Answer:

A

Explanation:

4 0
3 years ago
g A and B are both non-volatile molecular compounds. Substance A has a greater molar mass than substance B. If 50 g of substance
Doss [256]

Answer:

The correct answer is - option D.  the boiling point of solution A will be lower than the boiling point of solution B

Explanation:

Colligative properties such as a decrease in the freezing point of the solution, increase in the boiling point of substance, decrease in Lowering of vapor pressure, and other properties depend upon the number of molecules only.

In the given solution the equal amount of two solutions are mixed that is 50 grams however due to the difference in the molecular mass so the atoms present in both solution A and B will be different. It is known that the number of atoms of a substance is inversely proportional to the molecular mass of the particular substance.

As it is given that Solution B has a low molecular mass which means it has a high number of atoms that means its boiling point will be higher than solution A.

8 0
3 years ago
Which of the following compounds is not possible?
neonofarm [45]

Answer:

C

Explanation:

Large chlorine atoms can not fit within the atoms of boron

4 0
3 years ago
A sample of gas contains 0.1800 mol of CO(g) and 0.1800 mol of NO(g) and occupies a volume of 23.2 L. The following reaction tak
baherus [9]

Answer:

The volume of the sample is 17.4L

Explanation:

The reaction that occurs requires the same amount of CO and NO. As the moles added of both reactants are the same you don't have any limiting reactant. The only thing we need is the reaction where 4 moles of gases (2mol CO + 2mol NO) produce 3 moles of gases (2mol CO2 + 1mol N2). The moles produced are:

0.1800mol + 0.1800mol reactants =

0.3600mol reactant * (3mol products / 4mol reactants) = 0.2700 moles products.

Using Avogadro's law (States the moles of a gas are directly proportional to its pressure under constant temperature and pressure) we can find the volume of the products:

V1n2 = V2n1

<em>Where V is volume and n moles of 1, initial state and 2, final state of the gas</em>

Replacing:

V1 = 23.2L

n2 = 0.2700 moles

V2 = ??

n1 = 0.3600 moles

23.2L*0.2700mol = V2*0.3600moles

17.4L = V2

<h3>The volume of the sample is 17.4L</h3>
8 0
3 years ago
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