Question 10 (1 point) A container is filled with hydrogen, oxygen, nitrogen
gases. If the container has 100 mmHg of oxygen and
200 mmHg of hydrogen and a total pressure of 750 mmHg,
what is the partial pressure of the nitrogen?
O.
Oь
500 mmHg
100 mmHg
450 mmHg
300 mmHg
Ос
Od

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.

Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. predict the effect (shift right, shift left, or no effect) of the indicated volume change. drag the appropriate items to their respective bins.co(g) + h2o(g) < => co2(g) + h2(g) (volume is decreased) pcl3(g) + cl2(g) < => pcl5(g) (volume is increased) caco3(s)< => cao(s) + co2(g) (volume is increased)

Which factor is likely to impact the possible number of compounds ?