The emission spectrum of the element lithium is shown below.

what is the best estimate of the color that will be seen when a sample of lithium gas absorbs a lot of energy?

mix of blue and green
mix of red and orange
mix of yellow and green
pure yellow

mix of red and orange

Explanation:

The lithium emission spectrum indicates high intensity at the wavelength of 600nm to 700nm

In the visible light spectrum, colors that are in this range are;

Red=700 - 630 nm

Orange= 630 to 590nm

A sample of lithium gas that has absorbed a lot of energy will show  a mix of red and orange colors

sleep paralysis is a parasomnia, events associated with sleep.

sleep paralysis happens when you are in the middle of waking up or falling asleep. it is the feeling of being conscious but unable to move. it definitely involves hallucinations.

i had a friend that had sleep paralysis and he told me a story one time where he was laying in bed and he couldn't move his body no matter how hard he tried and there was someone standing in the corner of his room coming towards him. he couldn't move and you can't "wake up" because you are already conscious. sometimes sleep paralysis can be triggered by frequent waking up during the night based off of multiple trips to the bathroom, or if you had ever been abused, sleep paralysis can start happening from things like that.

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.