30 POINTS PLEASE HELP (IF YOU GIVE WRONG ANSWER ILL REPORT U ) What type of galaxy is described as revolving around a single point and has spinning arms of stars which extend from the center? (3 points) spiral
elliptical
irregular
barred spiral

The type of galaxy that is described as revolving around a single point and has spinning arms of stars which extend from the center is;

Spiral

Explanation:

A spiral galaxy which is the most common type of galaxy is a class of Hubble sequence of galaxies which was described in the 1936 work The Realm of the Nebulae by Edwin Hubble

Spiral galaxies are therefore have a flat disk shape such that the stars, the dusts, and the gas that make up the galaxy cluster in several radially spreading spiral arms that come together in the galaxy center

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :