Which reaction is endothermic?

How many atoms of Cl are there in 25 moles of Cl (subscript) 2? Can someone show the work and explain this to me I'm so lost

How many atoms are there in 10.0 g of sodium?

Which of the following is the best name for CaF2? calcium fluoride monocalcium difluoride calcium difluoride calcium fluorine

In a popular song from 1970, the musical group Crosby, Stills, and Nash use the line, "We are stardust." Why is this statement true?

Raw meat can spread pathogens. Which statement describes the best way to prevent the spread of foodborne illness? A. Use a paper towel to wipe off everything that the meat touched. B. Rinse your knives and cutting board with water. C.

Car Q and z are put though an endurance test to see if they can travel at 120 km/h for 5.0 hours. Each car has a 45-L fuel tank. Car z must stop to refuel after traveling for 4.2 hours. Car Q, however, travels for 5.4 hours before running out of gas.

What happened to the atoms in the heated metal ball so that it didn't fit through the ring?

A 3.00 L flexible container holds a sample of hydrogen gas at 153 kPa. If the pressure increases to 203 kPa and the temperature remains constant, what will the volume be?

Measurement of the functions of a nephron reveals a glomerular capillary pressure of 69 mm Hg, and a pressure in the capsular space of 15 mm Hg.

Water is unique because the density of it's solid is less than the density of it's liquid. Describe how life would be different if this weren't true