look at the chemical tables. but i believe it is A
C=Carbon
O=Oxygen
Oxygen is a diatomic molecule, so the subscript two needs to be used after the O in the formula.
C+O2->CO2
Hope this helps!
The Large intestine absorbs water and vitamin K from digested food.
Answer:
The atomic mass given on a periodic table that is given in grams is the mass of one mole (6.022 × 1023 particles) of that element. EXAMPLE: As you can see from the example above, one mole of Carbon would have a mass of 12.011 grams.
Answer:-
0.633 moles
Explanation:-
The first step to solving this problem is to write the balanced chemical equation.
The balanced chemical equation for this reaction is
3 CaCO3 + 2 FePO4 = Ca3(PO4)2 + Fe2(CO3)3
From the balanced chemical equation, we can see
3 moles of CaCO3 react with 2 moles of FePO4.
In the question we are told there are 1.9 moles of CaCO3.
So 1.9 moles of CaCO3 react with (2 moles x 1.9 moles )/ 3 moles= 1.267 moles of FePO4.
The question tells us there are 2.7 moles of FePO4.
So there is excess FePO4.
Thus our limiting reagent is CaCO3. It will determine how much Ca3(PO4)2 is formed.
From the balanced chemical equation, we can see
3 moles of CaCO3 gives 1 mole of Ca3(PO4)2
1.9 moles of CaCO3 gives (1 moles x 1.9 moles ) / 3 moles= 0.633 moles of Ca3(PO4)2.
0.633 moles of Ca3 (PO4)2 can be formed when 1.9 moles of CaCO3 react with 2.7 moles of FePO4
