Why does the moon have phases? What are the four main phases of the moon? How long does it take to change from one to another?

If you ix 20.0 ml of a 3.00m sugar solution with 30.0 ml of a 5.69 m sugar solution, you will end up with a sugar solution of?

The nuclear product of radioactive decay is called the

Describe the chemical reaction of: NH3 (g) + O2 (g) - > NO (g) + H2O

What is the density of a mineral with a mass of 41.2 g and a volume 8.2 cm3?

Locate on the periodic table each group of ions with the same charge. What relationship exists between ions of the same charge and the location of the corresponding element on the periodic table?

What are elements and how do they differ?

Write the structire of the salt that forms when diethylamine is mixed with hydrochloric acis

The heat of combustion of propane, C3H8, is 2220 kJ/mol. The specific heat of copper is 0.385 J/g°C. How many grams of propane must be burned to raise the temperature of a 10.0 kg block of copper from 25.0°C to 65.

Which is an example of Temporal Isolation? A. Flowers that bloom in different months. B. Birds that have different mating calls C. Fruits flies that mate in different locations. D. Squirrels that have different fur colors

A chemical reaction can start when enough activation energy is added to the reactants. Do you think the activation energy for chemical reactions in living things is high or low / Explain your answer