In what ara did reptiles become dominant

You have 10 ml of ethanol and want to use it all to make a 10-fold dilution with water. How would you do this, including the final volume?

Carbon monoxide is considered which of the following? A) atomic element B) molecular element C) molecular compound D) ionic compound E) none of the above

What is the natural rate of nitrogen fixation in Earth's ecosystems? What is the natural rate of nitrogen fixation in Earth's ecosystems?

The atom having the valence shell configuration 3s2 3p3 would be: A. Group 3A, Period 5 B. Group 5A, Period 3 C. Group 7A, Period 4 D. Group 3A, Period 3

At a certain temperature the vapor pressure of pure heptane C7H16 is measured to be 454. mmHg. Suppose a solution is prepared by mixing 102. g of heptane and 135. g of chloroform CHCl3.

What will be the outcome of putting litmus paper into bleach? a. red paper turns blue, blue paper turns red b. red paper does not change, blue paper turns red c. red paper turns blue, blue paper does not change d.

What makes it possible for ships to float?

How many moles of water will be produced when 3 moles of ethane are burned

What is an exothermic chemical reaction? a. It is a reaction that converts matter to heat. b. It is a reaction that requires heat to proceed. c. It is a reaction that draws heat from its surroundings. d.

Chemical equation for liquid ethyltoluene