3D + A, B, → 3DB + 2A Molar Masses from periodic table: A=2.0 g/mol B= 6.1 g/mol D=4.3 g/mol How many grams of D do you need to react with 8.1 g A, B, ?​

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.

Explain why scientists use shared characteristics to make cladograms.

What are the genotypic and phenotypic ratios