1. Which is containing more molecules, 8.12 * 10 ^ 21 molecules of calcium chlorate or 245.86 g of calcium chlorate? /6 N

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.)

20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false