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4 years ago

Select all that apply. Where would you expect to find plasma?

Chemistry

2 answers:

andre [41]4 years ago

8 0

Answer:

All the options are correct

Explanation:

Anything/matter heated to extreme temperature where it get converted into gas and then into an ionized gaseous composition (with further heating) lead to the condition of Plasma. In a plasma condition , there exists equal number of ionized particle , both positive and negative. The particle of gaseous matter get ionized due to excessive heating.

gtnhenbr [62]4 years ago

4 0

The First Two Are Correct Since They Give Off Light

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An object has a mass of 10 grams and a volume of 5cm3 what is the density of the object?

lesya692 [45]

Answer:

.0002

Explanation:

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2 years ago

Which of the following is a correct formula unit of an ionic compound?

goldenfox [79]

Answer : The correct formula unit of an ionic compound is Ca(OH)2

Explanation :

An ionic compound is formed when a metal atom donates one or more electrons to a non metal atom.

During this process, metal gains a positive charge and a nonmetal gets a negative charge.

In an ionic compound, these charges on the ions are balanced so that the overall compound is neutral.

Let us check which of the given compounds have a neutral charge.

1) Al2F3 : Charge on Al is +3 and that on F is -1.

The total charge on 2 Al is 2x3 = +6.

The total charge on 3 F atoms is 3x(-1) = -3

The overall charge on the compound is +6-3 = +3.

That means the given formula unit is not correct.

2) Ca2O : Charge on Ca is +2 and that on O is -2

Total charge on Ca is 2x2 = +4

The overall charge is +4-2 = +2

Therefore the given formula unit is not correct.

3) Ca(OH)2 : The charge on Ca ion is +2 and that on OH is -1.

The total charge on 2 OH ions is 2x(-1) = -2

The overall charge is +2-2 = 0

This gives a neutral compound.

Therefore the given formula unit is correct.

6 0

4 years ago

Read 2 more answers

The lengthening of a transmitted signal's wavelength and/or a decrease in its frequency, which indicates that the object is movi

Alla [95]

Relative to the observer, the objected, emitting visible light will appear red in color because the wavelength of light is stretched hence acquiring longer wavelength in the visible electromagnetic spectrum (remember red light has the longest wavelength in the visible light spectrum).

Explanation:

Conversely, if the object was moving towards the observer, it would appear blue in color (blue shift) because the relative wavelength of the visible light would be ‘compressed’ (remember this is always relative to the observer) hence the wavelength would be shorter (and blue light has the shortest wavelength in the visible light spectrum).

Both these phenomenons are classified under Doppler shift effect of waves. It also occurs in our daily lives. When a wailing ambulance approaches you, the pitch of the wailing sounds is higher (relative to you). However, when the ambulance passes you and begins stretching away from you, the pitch of the wailing goes low.

Learn More:

For more on Doppler shift effect check out;

brainly.com/question/3841958

#LearnWithBrainly

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3 years ago

Read 2 more answers

1. You watch water falling from the top of a waterfall to the bottom. How would you characterize this physical phenomenon in ter

alexandr1967 [171]

Well the reason why the water valve was because of the force of gravity. Without the force of gravity the water would have flown so if you had to try to move the water up the waterfall you would have to fight the force of gravity

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4 years ago

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Draw the Lewis structure and predict the molecu- lar geometry of the following molecules: a. SO2 b. CI4 c. BCl3

vovikov84 [41]

Answer: Molecular geometry shape of SO2 is V-Shaped or Bent (trigonal planner) , CCl4 is tetrahedral and BCl3 is trigonal planar.

Explanation:

The Lewis structures of the compounds are in the figure below.

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4 years ago