2 nf3 + 225 kj - > n2 + 3f2 is it exothermic or endothermic

Why charcoal grills or chaecoal fires would not be used to hear the inside of a house

Determine the mass in grams of 0.750 mol of francium.

What crossed-aldol product results when butanal is heated in the presence of excess benzaldehyde and sodium hydroxide? draw the molecule on the canvas by choosing buttons from the tools (for bonds), atoms, and advanced template toolbars.

Which of the following statements concerning polar molecules is false? Group of answer choices There must be an odd number of polar bonds so that their polarities not cancel.

heat of combustion of a substance with initial mass of 100g combusts, final mass of 95g and releasing 2000kj of energy

A 390 mL solutions of 4.6 M HCl is left out over the weekend and 74 mL of solvent evaporates. What is the new concentration of HCl?

How many grams of NH3 can be produced from the reaction of 17.8 moles of H2 and a sufficient supply of N2? N2 + 3 H2 → 2 NH3

A 5.00g ball of hot iron at 200 degrees celcius is dropped int owater at 20 degrees celcius. The system acheives thermal equilibrium at 25 degrees celicus. calculate the mass of water heated.

How can human activity can impact an organism's ability to obtain the resources it needs to survive

At STP, how many liters of oxygen are required to react completely with 3.6 liters of hydrogen to form water, 2H 2 (g) + O 2 (g) - --> 2H 2O (g) ?