Answer:
The answer to your question is Synthesis and Endothermic
Explanation:
Balanced chemical reaction
H₂ + F₂ ⇒ 2HF + 546 kJ
Chemical reactions can be classified in different ways, so I suggest two names of this reaction.
1.- This is a synthesis reaction because two different reactants form a new compound.
2.- This is an endothermic reaction because it was needed to supply 546 kJ of energy so that the reaction proceeds.
Farm water runoff, which causes nitrogen rich fertilizer to be washed into the body of water. The nitrogen feeds the algae bloom.. Hope this helps
The ore contains 55.4% calcium phosphate (related to the mineral apatite) so the amount of Ca3(PO4)2 is 55.4%x=1000g so x=1000/0.554= 1.805kg. Now for the % of P in this amount of calcium phosphate, use all the masses of the elements in Ca3PO4= Ca=40.078 x 3= 120.23 and (PO4)2= (30.974+64)2=189.95 (NB oxygen is 16 mass x 4 =64) so the total mass is 310.2 and we have 61.95 of P (Pmass x 2) so 61.95/3102.= 0.19 or 19% P. So of the 1.805 x 0.19= 0.34kg of phosphorus.
The answer to your problem would b b