Hòa tan hoàn m gam AL bằng dung dịch HNO3 (loãng dư) thu được 2.24 lít khí NO .tìm m

Why should the scientific method be used to answer a question? a. it provides a way to test an idea without any bias. b. it provides a way to test a hypothesis. c. it provides a way to ensure all hypotheses are proven correct. d. it provides a way to quickly turn a hypothesis into a scientific theory.

The speed of light is around 6.706×10^8 miles per hour. what is the speed of light in units of miles per minute?

According to each substances heat of fusion, which of the items below requires more heat to be added per gram of substance to go from solid to liquid? silver sulfur water lead