what is the age of a meteorite if potassium-40 decayed from 80 g to 10 g? the half-life of potassium-40 is 1.3 billion years.

How is 0.00235 expressed in proper scientific notation? a. 2.35 × 10-3 b. 0.235 × 10-2 c. 2.35 d. 2.35 × 103

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!