How many chlorine (ci) atoms would be in 4 molecule of salt (4naci)

Do respiration in cells releases energy or absorbs energy

Which of the following reactions is endothermic? H2 (g) + ½O2 (g) → H2O (g), ΔH = - 57.82 kcal ½N2 (g) + O2 (g) + 8.1 kcal → NO2 (g) ½N2 (g) + 3/2H2 (g) → NH3 (g) + 11.0 kcal C (diamond) + O2 (g) → CO2, ΔH = - 94.50 kcal

Which statement best compares coastal ecosystems to open ocean ecosystems? Coastal ecosystems include abyssopelagic depths, and open ocean ecosystems do not.

when a chemical change occurs, what do you know about the amount of matter in the new substances? what is this known as? (is it suppose to be a science question)

Which one of the following is a weak acid? (a) H2SO4 (b) HF (c) HCl (d) HBr (e) HI

Helium, neon, and argon are examples of A) metals B) metalloids C) noble gases D) transitional metals

How many moles of MgS2O3 are in 201 g of the compound

What is the process of discovery that allows us to link abservations with actual facts? Science Inquiry Mathematics Repetition

Elastic energy is stored when an object is stretched. Is this an example of potential or kinetic energy? A. Neither B. Both d C. Kinetic O D. Potential Reset Selection

Round each figure to three significant figures