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1. ### what is the standard reduction potential of Fe and Ca ?

...over and its Eo sign changed. So, by flipping the Ca reaction over, its voltage becomes +2.87 V. Adding that do...

1 Answers · Science & Mathematics · 21/07/2020

2. ### Calcium reacts with a polyatomic ion to form a compound with the general formula Ca (X).?

B. K2X The Ca (X) formula informs us that X is a -2 polyatomic. Since K is a +1, we need two of them. An example of a real compound of this type would be K2SO4.

1 Answers · Science & Mathematics · 09/04/2020

3. ### How many moles of atoms are in each... a. 2.35×10^22 He atoms b. 4.09×10^21 Ca atoms Answer in 3 sig figs. ?

... = 2.35 x 10²² atoms/6.02214 x 10²³ =0.0390 mole Ca atoms = 4.09 x 10^21 atoms So, mole of Ca = 4.09 x...

2 Answers · Science & Mathematics · 06/07/2020

4. ### When mixing aqueous solutions of 25.0 mL of 35.0 mM Ca (NO3)2 and 15.0 mL of 65.0 mM Na3PO4, it forms how many grams of Ca3(PO4)2?

0.0250 L  X 35.0 mM  =  0.875 mmol Ca (2+)  <<< limiting reactant 0.0150...

1 Answers · Science & Mathematics · 22/04/2020

5. ### Maple syrup has density 1.325g/mol and 100.00g of maple syrup contain 67mg of calcium in form of Ca ^2+. What is  molarity of calcium in syru?

mass of 1 L maple syrup = 1325 gm mass of Ca 2+ = 1325/100 x 67 x 10^-3 = 0.88775 gm M = 0.88775/40.078 x 1000/1000 = 0.0222M

1 Answers · Science & Mathematics · 29/10/2020

6. ### How many moles of HBr are needed to neutralize 1 mole of Ca (OH)2?

2 moles

1 Answers · Science & Mathematics · 03/11/2020

7. ### chemistry help?

Ca (OH)2 > LiOH > NH3 > HF > HNO3

1 Answers · Science & Mathematics · 25/03/2020

8. ### Help with Solving Limiting Reactant Problem?

(29.4 g Ca (OH)2) / (74.0927 g Ca (OH)2/mol) = 0.39680 mol Ca (...) / (36.4611 g HCl/mol) = 0.87765 mol HCl 0.39680 mole of Ca (OH)2 would react completely with 0.39680 x (2/1) = 0.79360 mole of HCl...

1 Answers · Science & Mathematics · 18/09/2020

9. ### Can anyone help me on these chemistry probelms?

2 moles Ca3P2 x 3 moles Ca /1mole Ca3P2 = 6 moles Ca 6.0 moles Ca x 40...

2 Answers · Science & Mathematics · 25/05/2020