Question 4 5 pts
How many grams of O2 are needed to react completely with 28.0 g of ui in the following
4 L + O2 → 20,0?
O 3205
256.05
O 705
O 84.03

|using the periodic tablewarm-upuse the periodic table in the tools bar to answer the following questions.what elemental classification does oxygen belongto? done

When 13.3 g koh is dissolved in 102.7 g of water in a coffee-cup calorimeter, the temperature rises from 21.4 °c to 31.53 °c. what is the enthalpy change per gram of koh (j/g) dissolved in the water? * take the density of water as 1.00 g/ml. * assume that the solution has a specific heat capacity of 4.18 j/g*k. enter to 1 decimal place. do not forget the appropriate sign /(+). canvas may auto-delete the (+) sign

Which are forms of frozen water? check all that apply. dew frost hail rain sleet