The atomic theory was proposed as early as 400 B. C. by Greek philosophers. Their hypothesis was not proven until much later. What is the main reason the Greek theory did not stand up over time?

I need to know about mitosis and meiosis

A protein is a polymer that is made of a. simple sugars. c. amino acids. b. nitrogen and carbon dioxide. d. DNA.

You have the equations: 2H2O (l) →2H2 (g) + O2 (g), △H=572 kJ 2N2 (g) + 3H2 (g) →2NH3 (g), △H=-138 kJ 2NO2 (g) + 7H2 (g) →2NH3 (g) + 4H2O (l), △H=-1.18*103 kJ 2NO2 (g) →2N2 (g) + 2O2 (g), △H=□ What is the missing △H? -1.38*103 kJ +99.0 kJ +1.

What are the properties of matter

Evidence shows that interstellar bodies are moving far away from earth some faster than others which best suggest that the universe A is shrinking. B Is expanding. C. Was not formed by a Big Bang. D. Has always been the same size will mark brilliant

Convert 4.57X-3m to the equivalent length in nanometers

A rock falls off a cliff and hits the ground after three seconds. What is its velocity right before it hits the ground? 9.8 m/s 0.31 m/s 29.4 m/s 3.3 m/s

Which compound is an isomer of pentane? (1) butane (3) methyl butane (2) propane (4) methyl propane

Which of the following has primary responsibility for eliminating alcohol from the bloodstream

A hydrocarbon with only single bonds is classified as a. an alkene. b. an alkyne. c. saturated. d. unsaturated.