a scientist would like to investigate if temperature have an effect on pulse rate design an experiment to help her test the idea be sure to State the hypothesis that the independent variable State the dependent variable described as the experimental group will be different than the control group​

What’s a special glass that most beakers are made of

Calculate the ratio of h+ ions to oh– ions at a ph = 7. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 7. are they the same? why or why not? record your comparison in table a. what is the concentration of h+ ions at a ph = 7? mol/l what is the concentration of oh– ions at a ph = 7? mol/l what is the ratio of h+ ions to oh– ions at a ph = 7? : 1

If an atom has 12 protons and 13 neutrons