❣how do scientists use ice to study ancient climates? a. through glacial deposits and ice cores b. through glacial deposits and ice ages c. through ice cores and pollen grains d. through pollen grains and ice ages which greenhouse gas is produced by commercial refrigeration and air conditioning systems? a. carbon dioxide b. fluorinated gas c. nitrous oxide d. methane

Can anyone (a-level) a student was analysing a carbonate compound, mco3, containing an unknown group 2 metal, m. the student carried out thermal decomposition on 0.730g of the carbonate and measured the volume of gas produced. mco3 (s) mo (s) + co2 (g) the student collected and measured 120cm3 of carbon dioxide. 1 mol of carbon dioxide occupies 24 000 cm3 under these conditions. calculate the molar mass of the group 2 carbonate and hence deduce the identity of the group 2 metal, m.

Clouds form when water vapor to form small droplets. a. humidifies b. condenses c. evaporates d. precipitates

Which mathematical relationship should you us to convert moles of a substance into grams