explain what is meant by an exothermic reaction and write balanced equation for any two exothermic changes​

What is the result of multiplying (2.5 × 1010) × (2.0 × 10-7)? a. 5.0 × 103 b. 5.0 × 10-3 c. 5.0 × 1017 d. 5.0 × 10-17

What are the genotypic and phenotypic ratios

How heavy is thanos? a) 3000 lbs b) all of it c) the price of tea in china d) heavy enough