Which balanced equation represents an endothermic reaction?

(1) C (s) + O2 (g) → CO2 (g)

(2) CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (l)

(3) N2 (g) + 3H2 (g) → 2NH3 (g)

(4) N2 (g) + O2 (g) → 2NO (g)

Aluminum fluoride+sulfuric acid=

Who is Adolf Hitler?

Which best defines partial pressure in a mixture of gases? O pressure that is exerted by all the gases of a mixture on the container O pressure that is exerted by one gas as if it occupied a container by itself O half of the pressure that is exerted

If you place a cell containing 0.025% sodium into a solution of 0.5% sodium, what will happen by osmosis?

How many moles of calcium carbonate-CaCO3 = 4.15 g

Enter your answer in the provided box. A sample of an unknown gas effuses in 14.5 min. An equal volume of H2 in the same apparatus under the same conditions effuses in 2.42 min. What is the molar mass of the unknown gas

What volume will 0.710 moles of nitrogen gas occupy at STP?

4) Acompound has an empirical formula of Na2co3, and a molar mass of 3.18g/mol. Find its molecular formula.

How many molecules of glucose, C6H12O6, can be "burned" biologically when 283.2 grams of oxygen is a available?

Why does acids that has been accidentally spilled on a book cause the colour of the book cover and the ink to change?