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3 years ago

As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit ___?

1 answer:

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Ans: As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit will increase.

The energy (E) is related to the frequency (ν) by the following equation:

E = hν

where h = planck's constant

The change in energy i between levels is:

ΔΕ = h(Δν) -----(1)

Based on the above equation, as the changes in energy levels increase, the frequency of emitted radiation will also increase.

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Predict the following product(s) of the following reaction? F2 + KCI →

slega [8]

Answer:

${ \rm{F _{2(g)} + 2KCl _{(aq)} → { \bold{2KF _{(g)} + Cl_{2(g)} }}}}$

Explanation:

» The prediction is 98% correct because single displacement reaction type is highly possible.

This is because Fluorine has is more electronegative than Chlorine in Potassium Chloride. So, it strongly displaces Chlorine from the solution hence forming Chlorine gas.

» The 2% of wrong prediction maybe because of wrong reactant measurements following mole concept chemistry.

If you are asked the observation,

Observation » A green yellowish gas is formed.

This gas is Chlorine gas (Cl2)

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2 years ago

What is the percent by mass of oxygen in mg(oh)2

kakasveta [241]

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3 years ago

What is the velocity of a 500 kilgram elevator that has 4000 joules of energy?

nirvana33 [79]

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3 years ago

Extension: Cedric has been in the hospital for 15 weeks, how many minutes is that? Use

almond37 [142]

Answer:

151200 minutes.

Explanation:

From the question given above, the following data were obtained:

Time (in week) = 15 weeks

Time (in min) =?

Next, we shall convert 15 weeks to days. This can be obtained as follow:

1 week = 7 days

Therefore,

15 weeks = 15 weeks × 7 days / 1 week

15 weeks = 105 days

Next, we shall convert 105 days to hours. This can be obtained as follow:

1 day = 24 h

Therefore,

105 days = 105 days × 24 h / 1 day

105 days = 2520 h

Finally, we shall convert 2520 h to mins. This can be obtained as follow:

1 h = 60 mins

Therefore,

2520 h = 2520 h × 60 mins / 1 h

2520 h = 151200 mins

Thus, 15 weeks is equivalent to 151200 minutes.

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2 years ago

Types of forces lab report

denpristay [2]

List of different types of forces:

Gravity
Push
Pull
Friction
Magnetism
Net force
Momentum

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2 years ago