Directions: Show all of your work for each of the following problems. 3. What is the % Ba in Ba(NO3)2?

4. What is the % of each element in Ni3(PO4)2?

5. What is the % of each element in Al2(CrO4)3?

6. What is the % of each element in (NH4)2(SO4)?

50 pts plz what is the physical state of matter of baking soda.

You have 125g of a certain seasoning and are told that it contains 76.0 g of salt what is the percentage of salt by mass in this seasoning

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