Which of the following is a balanced chemical equation?

SO2 + O2 + 2 H2O → 4 H2SO4

H2O2 → H2O + O2

2 Fe2O3 + 3 C → 4 Fe + 3 CO2

2 Mg + HC1 → MgCl2 + H2

A chemist is doing research to find a better way to process natural gas after it is removed from the ground.

How can we remove the hardness of water by boiling?

Which atom (Ba or I) would accept electrons from the other atom to satisfy the octet rule?

Which of these equations represents a displacement reaction? Copper + oxygen → copper oxide Zinc + copper sulfate → zinc sulfate + copper Sodium + water → sodium hydroxide + water

Why must the surface of a mineral be different color than the interior of the mineral?

Using activated charcoal to separate heavy metals from water is a process known as scrubbing. True or False

If 119.5 g of iron is mixed with 279.50 g of copper (II) nitrate, what is the limiting reagent for the reaction?

Write and balance the double replacement reaction between barium sulfate and titanium (II) oxide.

What do a Am radio, Fm radio, television and cell phones have in common. A.) they were all invented in the same year B.) they were all invented by the same scientist C.

Consider the reaction: 2 NO (g) + 5 H2 (g) → 2 NH3 (g) + 2 H2O (g) A reaction mixture initially contains 5 moles of NO and 10 moles of H2. Which set of amounts best represents the mixture after the reactants have reacted as completely as possible?