How do you balance

C2H2 + O2 - > CO2 + H2O?

Is it C2H2 + 5/2 O2 - > 2CO2 + H2O

or 2C2H2 + 5O2 - > 4CO2 + 2H2O?

Red light has a wavelength of about 7*10-7 m. will exposure to red light cause electrons to be emitted from cesium?

What are the two properties of the ink components that determine their movement along the chromatography paper/fabric (see Introduction) ?

An object was placed into a container of water the arrow shows the thermal energy is flowing from the water to the object what is the valid conclusion

How can the strength of metallic bonding be measured?

A galvanic cell is made up of an aluminum electrode and a sodium electrode. Which metal is oxidized?

A flask of fixed volume contains 1.00 mole of gaseous carbon dioxide and 88.0 g of solid carbon dioxide. the original pressure and temperature in the flask is 1.00 atm and 300. k. all of the solid carbon dioxide sublimes.

Oxygen is in group 16 of the periodic table. An oxygen ion (O2-) has a charge of - 2. Which of the following would be most likely to combine with an oxygen ion to form a new compound?

How and why - Why does ice float on water

Measurements show that enthalpy of a mixture of gaseous reactants decreases by 228. kJ during a certain chemical reaction, which is carried out at a constant pressure.

When 9.8 mol Fe react with 11.5 mol HCl, what is the limiting reactant and how many moles of H2 can be formed? unbalanced equation: Fe + HCl yields FeCl3 + H2 HCl is the limiting reactant, and 3.