Which of the following would increase the surface area of a solid so that it dissolves faster? A. crush the solid

B. make the solid into a bigger clump

C. none of the above

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?

100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)