Justin designed an experiment to find out how running up bleachers affects his heart rate. First he records his resting heart
rate and then runs up the bleachers 10 times. Each time he reaches the top, he records his heartrate then rests 20
minutes.
Which is involved in Justin's experiment?
replication
repetition
both repetition and replication
neither repetition nor replication

i just learnt this recently but i need to look through my notes again

each  column  of the  table  is called a group. elements in a group share similar properties. groups are  read  from  top  to  bottom. metal. metalloid. nonmetal. solid. liquid. gas. fe. hg. o.  2. 3. 4. 5. 6. 7. 8. 9.  2. beryllium. 9.012. 4.  sodium. 22.990.  11. 3.  magnesium. 24.305.  12.  potassium. 39.098.  19. 4.  calcium. 40.078.  20. i guess  i  

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

hope this : )

the ratio of the conjugate base to the acid required to attain the desired ph.