Using john daltons method, what's the ratio of the chemical compound of salt - nac1

How many molecules of sucrose c12h22o11 are there in 454 grams of sucrose

What does the process of natural selection involve

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here