Which of the following gases is the heaviest? O2, CH4, CO2, Cl2 O 2 CH 4 Cl 2 CO 2

How much heat is added if 0.814g of water increase in temperature by 0.351 degree c?

Use the measurements in the table to determine which unidentified metal has the highest density. metal volume mass a 10.5 cm3 122 g b 14.2 cm3 132 g c 16.1 cm3 115 g d 12.7 cm3 126 g

Element j is 1s 2s 2p 3s . (i) how many unpaired electrons does j have? (ii) is j a good oxidizing agent or a reducing agent? (iii) state reason for the answer.