A group of students are asked to study how heart rate is impacted by exercise. The students take their heart rate seated. The students are then asked to jog in place for one minute and take their heart rate again. What is the dependent variable of this experiment? a. jogging in place for one minute.
b. the speed in which the students are jogging in place.
c. the number of heart beats counted.
d. the number of students participating in the experiment.

Acontainer holds 35.8 moles of gas under 10.0 atm of pressure at 70.0 c. what is the volume of the container?

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.

Draw the lewis dot structure for each of the following polyatomic ions