Which pair of compounds has the same empirical formula? (4 points) Group of answer choices

C2H6 and CH

CH3 and C2H6

C3H8 and C3H

C2H2 and C2H

What are the percent by mass of copper in penny lab

What type of energy do chemical bonds have? what type of energy is it converted to during chemical reactions? question 15 options: chemical bonds have kinetic energy, which is converted to potential energy during chemical reactions. chemical bonds have electric energy, which is converted to potential energy during chemical reactions. chemical bonds have heat energy, which is converted to kinetic energy during chemical reactions. chemical bonds have potential energy, which is converted to heat energy during chemical reactions.

How many grams of aluminum will there be in 98g of al2o3?