Scientists understand the nuclear reactions that occur in the Sun’s core, but want to predict how the Sun will change with time as it consumes more of its hydrogen fuel. Which of the following would be the best method to study how the Sun will change over the next few billion years?

The boiling point of liquids is very high what does it indicate

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.)

What is the mass of phosphorous in a 51-kg person