Spiral galaxies often appear bluish due to an abundance of old stars. C. young stars , b. black holes. d. white dwarfs. Please select the best answer from the choices provided A B C

Easy definition for atom and atomic mass

What is the mass of sodium in 3 moles of sodium chloride

The reactions shown here can be combined to make the overall reaction c(s) + h2o(g) ⇌ co(g) + h2(g) by reversing some and/or dividing all the coefficients by a number. a. c(s) + o2(g) → co2(g) k=1.363×10^69 b. 2 h2(g) + o2(g) → 2 h2o(g) k=1.389×10^80 c. 2co(g) + o2 (g) → 2 co2(g) k=1.477×10^90