Which statements accurately describe the Doppler effect? Select three options.

~It is used to learn about the behavior of the universe.

~It was used by Hubble to measure velocities of galaxies.

~It indicates galaxy motion through light wavelengths.

``It indicates a galaxy moving toward Earth through red shift.

``It indicates a galaxy moving away from Earth through blue shift.

The Statements that accurately describe Doppler effect are

Explanation:

The Doppler effect when it comes to electromagnetic waves such as light, it is of great significance for the use of astronomy. It describes the wavelength is red shift or blue shift and also helps in measuring the speed at which the stars and galaxies are moved towards the Earth or away from it.

The Doppler effect describes the changes in frequency of the sound or light wave produced by a moving source.

Hence, three statements that describes the Doppler effect are selected and described.

1.consider the following balanced equation and answer parts a through. show calculations for each part.  

3 ag(s) + 4 hno3(aq) → 3 agno3(aq) + no(g) + 2 h2o(l)  

a. calculate the number of moles of agno3 produced by the reaction of 3 moles of ag with excess hno3. if the number to the left of the compound represents the number of moles of the compound which are present, then 3 moles of ag react with 4 moles hno3 to produce 3 moles agno3 (aq).

so the answer to a would be 3 moles.

b. calculate the number of moles of agno3 produced by the reaction of 108 grams of ag with excess hno3.  

i'm not sure how to plug in the grams of silver into an equation using moles to find how many moles are produced.

c. calculate the number of grams of agno3 produced by the reaction of 108 grams of ag with excess hno3  

d. calculate the number of moles of no produced as a byproduct of the reaction of 108 grams of ag with excess hno3.  

e. calculate the number of grams of no produced as a byproduct starting with 108 grams of ag and excess hno3.  

explanation:

fr8t7iot7o87oglgt87ot79p0[90