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Answer:
The answer to your question is 330 g of CHO
Explanation:
Data
Calories needed = 2200 kcal/day
CHO = 60%
Proteins = 15%
Fats = 25%
Grams of carbohydrates needed = ?
Process
1.- Calculate the number of calories in 60% of 2200 kcal
2200 kcal ---------------- 100%
x --------------- 60%
x = (60 x 2200) / 100
x = 1320 kcal
2.- Calculate the grams of CHO
1 g of CHO ---------------- 4 kcal
x ---------------- 1320 kcal
x = (1320 x 1) / 4
x = 1320/4
x = 330 g of CHO
Answer:
Charge on Phosphate is -3 (PO₄³⁻)
Explanation:
Ions or polyatomic ions are formed when an atom or molecule loses or gains electron(s) respectively.
Example:
Formation of ions.
Na → Na⁺ + e⁻ (Na loses one electron)
Cl₂ + 2 e⁻ → 2 Cl⁻ (Cl gains electron)
In polyatomic ions a charge is present on a molecule which has either two or more atoms.
Example:
CO₃²⁻ , SO₄⁻ , NH₄⁺ e.t.c.
In statement the K₃PO₄ polyatomic ionic compound. It is made up of three K⁺ ions and one Phosphate ion (PO₄ˣ⁻) ion.
As we know K belongs to group 1 metals so it has one valence electron and thus, forms a cation of +1 charge. So, for a neutral polyatomic ionic compound the overall charge on K₃PO₄ should be zero. Hence,
K (3) + PO₄ (X) = 0
Or,
+3 + X = 0
Or,
X = 0 - 3
X = -3
Therefore, the charge on phosphate is -3.