Which of the following equations is balanced correctly?

A.

3 H2O → H2 + 3 O2

B.

2 C3H3 + O2 → 2 CO2 + H2O

C.

2 C2H2 + 5 O2 → 4 CO2 + 2 H2O

D.

Cl2 + 2 KBr → KCl + Br2

Question 4 2 pts A careless chemistry student performed a chemical reaction where his theoretical yield of Magnesium oxide was 57.82 grams, but he actually produced 12.89 grams.

1. Who suggested that the molecular formula for water is H2O, not OH? A. Torricelli B. Lewis C. Pascal D. Dalton E. Avogadro F. Boyle G. Charles H. Newton 2.

Of the following groups-adenine, ribose, and phosphate-which changed during the processes that convert among ATP, ADP, amd AMP? Which Group or groups does not change?

When sodium reacts with chlorine, sodium chloride is produced. Andrew represented this reaction with this equation: Na + Cl2 → 2NaCl

A solution is made containing 22.8 g of magnesium nitrate per 325 g of water. What is the weight / weight % or percent by mass of the solute?

How many moles of co2 are produced when 10 mol of propane (c3h8) is burned in excess oxygen?

Why are the spheres representing nitrogen and oxygen different colors

How many moles are in 16.94g of water?

Two compound samples are found to have the same mass percentages of the same elements. what can you conclude about the two samples

Sodium hypochlorite (Na xCl yO z) is the active ingredient in household bleach. A 250.0 g sample of sodium hypochlorite contains 77.2 g sodium, 119.1 g chlorine, and the remainder is oxygen. Calculate the empirical formula of sodium hypochlorite.