# astronomy

on a domestic gas cooker the temperture in the hottest part of the flame is about 2200k.if salty eater is spilled in the flame then it becomes yellow-orange.measurements with a spectrometer show the presence of an emission line at 589n.

1) the solar spectrum shows an absorption line at 589nm rather than an emission line. explain why the solar absorption line is darker than the background while the flame emission line is brighter.

1. 👍
2. 👎
3. 👁
1. There is sodium vapor in the sun and it absorbs the energy at 589 nm coming from the sun.(I assume you meant nm and not just n.) That's why you get an absorption line at 589 nm. There is no sodium vapor on earth (or at least very very little) AND you don't have a continuum as you have in the sun. So the emission line is all you see on earth. Look up atomic absorption spectrophotometry and see how we measure the amount of sodium in a sample BY ABSORPTION (when we pass sodium vapor from a flame emission THROUGH a sodium vapor lamp and let the lamp absorb the energy of emission.

1. 👍
2. 👎

## Similar Questions

1. ### university chemistry

The instruction booklet for your pressure cooker indicates that its highest setting is 11.4 psi. You know that standard atmospheric pressure is 14.7 psi, so the booklet must mean 11.4 psi above atmospheric pressure. At what

2. ### chemistry

Hi! Can you please check if my answers are correct? And, can you please tell me any other details you think are important to add. Also, the last two questions i have no clue how to answer. can you help? thanks so much! 3.A burning

3. ### Science

When you put your hand near a candle, you feel heat directly over the flame but cool on the sides of the flame. Why does this difference occur? I think because of convection the warmer air rises and the cooler air sinks.

4. ### Chemistry -Flame colors (check+help)

What are the characteristic flame color for sodium, potassium, barium, copper, strontium, and calcium? Explain why? Ans: i know the flame colours, but for the explain why, could the below be a possible answer? The characteristic

1. ### science

why does a candle appear to go out when a copper coil is placed over the flame? Combustion requires three things: fuel (wax here), oxygen (air here), ignition temperature (a match here probably). Remove one and the combustion

2. ### Chemistry

a sample of gas of unknown pressure occupies 0.766 L at the temperture of 298k the same sample of gas is than tested under known conditions and has the pressure of 32.6kPa and occupies 0.664 L at 303 k. What is the original

3. ### chemistry

The instruction booklet for your pressure cooker indicates that its highest setting is 13.5psi . You know that standard atmospheric pressure is 14.7psi , so the booklet must mean 13.5psi above atmospheric pressure. At what

4. ### physics

An ideal gas is enclosed in a cylinder with a movable piston on top of it. The piston has a mass of 8,000 g and an area of 5.00 cm2 and is free to slide up and down, keeping the pressure of the gas constant. (a) How much work is