Which of the following statements about types of chemical reactions is true? 1. The opposite of a decomposition reaction is a synthesis reaction.
2. The operation of a synthesis reaction is a displacement reaction.
3. The opposite of a displacement reaction is a replacement reaction.
4. The opposite of a combustion reaction is a decomposition reaction.

What forms when chemical reactions combine pollution with sunlight?

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

Is 9 correct? and can someone me with 10? it’s due tomorrow, you