What do you think will happen if you pinch your arm after you stub your toe?

What is the study of how matter and energy interact? a. biology b. physics c. planetary science d. chemistry

1) this is the structure in the cell nucleus that houses a cell's genetic information

22. a flask containing 450 ml of 0.50 m h2so4 was accidentally knocked to the floor. how many grams of nahco, do you need to put on the spill to neutralize the acid according to the following equation: h2so4(aq)+2 nahcos(aq) na,so(aq) +2 h20()+2 co2(g) d) 38 g a) 2.3 g b) 9.5 g c) 19 g