Explain why the invention of the microscope was important in the study of cells

Consider the gas-phase reaction, n2 (g) + 3 h2 (g) 2 nh3 (g), for which kp = 43 at 400 k. if the mixture is analyzed and found to contain 2.0 bar of n2, 2.0 bar of h2 and 27.0 bar of nh3, describe the situation:

All of the following elements produce magnetic fields except for a. copper. b. nickel. c. cobalt. d. iron.

Louis pasteur developed the germ theory of disease. true or False

An element forms an ionic compound with chlorine having the formulaXCl2. If the mass number of the ion is 41and it has 18electrons, what is the element andhow many neutrons does it have?

How many atoms are in carbon 12

What is the distance from the highest part of one wave to the highest part of the next wave.

Calculate Delta E when 33.0 g of carbon dioxide sublimes at 77.0 K and 1 ATM

Calculate zeff for a valence electron in an oxygen atom.

Which of the following are physically properties of a penny

Complete the following statements about the functions of the digestive system. The starts an involuntary swallowing action when it senses food. The squeezes food down the digestive tract by an involuntary synchronized muscle movement called.