When Ba²⁺ and PO₄³⁻ reacts Barium phosphate is formed. the correct formula for Barium Phosphate is Ba₃(PO₄)₂
Ba²⁺ and PO₄³⁻ are charged so they are ions,Ba²⁺ is a cation because it is positively charged and PO₄³⁻ is an anion because it is negatively charged, when they reacts negative and positive charge attracts each other and a neutral salt is formed which is barium phosphate (Ba₃(PO₄)₂).
<u>Answer:</u>
By 1700, 13 elements had been discovered and isolated by the Scientists.
Option (a)
<u>Explanation:</u>
- The copper, gold and silver are the elements which have been known from thousands of years. In the early days of 1700, the scientist discovered only 12 elements, later on one more element was discovered.
- Later in the era of 1800, the scientist research and find new elements, where they organize it methodically, according to the physical and chemical properties.
- After a long research in 1900 scientist discovered more than 80 elements.
Answer:
0.228 mol FeO
Explanation:
2FeS2 + 5 O2----> 2FeO + 4SO2
from reaction 5 mol 2 mol
given 0.57 mol x
x = 0.57*2/5 = 0.228 mol FeO
I believe the correct answer from the choices listed above is the second option. The type of change and the explanation for the change in calcium carbonate would be that it is a <span>physical change </span>because even though a particle size change was observed, the calcium carbonate retained its original properties and was not transformed into a new substance.
The amount of N2O5 to start with would be 35.79 grams
<h3>Stoichiometric calculations</h3>
From the balanced equation of the reactions:
Mole ratio of N2O5 and NO2 = 1:2
Since the reaction's actual yield is 82%, the theoretical yield would be: 25 x 100/82 = 30.49 grams
Mole of 25 g NO2 = 30.49/46
= 0.66 mole
Equivalent mole of N2O5 = 0.54/2 mole
= 0.33 moles
Mass of 0.27 mole N2O5 = 0.33 x 108.01
= 35.79 grams
More on stoichiometric calculations can be found here: brainly.com/question/8062886