True
These are all indicators of a chemical change.
To determine the heat required in order to decompose a certain amount of a substance, we need information on the heat needed to decompose one mole of the substance. This value are readily available online and other sources. For this reaction, the heat needed is 129 kJ per 2 mol of NaHCO3. We calculate as follows:
129 KJ / 2 mol NaHCO3 (1 mol / 84.01 g ) (25.5 g NaHCO3 ) = 19.58 kJ of heat is needed.
Sodium phosphate = Na₃PO₄
phosphorus triiodide = PI3
hope this helps. make brainliest please!
Answer:
52
Explanation:
This is because if R is the midpoint of FRG, FR is half of FRG, so basically all you do it multiply by 2 to get the FRG
answer : D= m/v
Explanation:
all about density and mass and size of the molecules in a liquid and how close they are packed together
