True or false? One liter of helium gas has a mass of 2.3 grams at STP.

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

You have a liquid that exhibits diltancy. you want to pour it from a bottle. what should you do to the bottle before pouring

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.)