7. What is the concentration of a solution with a volume of 0 50 L that contains 40.0 sodium hydroxide (NaOH)?
grams of
a. 0.10 M
b. 0.50M
c. LOM
d. 20 M

The compound methyl butanoate smells like apples. its percent composition is 58.8% c, 9.9% h, and 31.4% o. what’s the empirical formula ?

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both