2.26 g of liquid water at 23.5 ◦C was com - pletely converted to ice at 0 ◦C. How much heat was (absorbed/released) by the system during this process?

Suppose you have made the following hypothesis: Sharks are most common near coral reefs, because there are more fish there to eat. Suppose you observed 10 sharks on a coral reef in the Caribbean, and 15 sharks in the open ocean 50 miles away.

A cube has sides of 11.4 cm. What is its volume? A) 1,482 cm3 B) 130 cm3 C) 1,443 cm3 D) 34.2 cm3

When an atom becomes an ion does its mass number change?

Determine the mass of 9.2 x 10^18 molecules of dinitrogen tetroxide.

How many atoms are in 15 moles of cadmium?

Which of the following processes is spontaneous? A). building a house B). launching a satellite into orbit C). drops of dye dispersing in a clear solution D). cleaning your bedroom E). a ball rolling up a hill

What mass of hydrogen is produced from 5.71 mol of aluminum?

Which term represents an intermolecular force in a sample of water? * ?

Which of the following examples are the result of unbalanced forces? Select all the apply

Type one to two paragraphs describing the changes in potential and kinetic energy of the cart.