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How many sodium ions are present in aqueous sodium phosphate if the sample size is 500 milliliters and the concentration is 2 Molarity?
First, you have to know what kind of sodium phosphate! Is it NaH2PO4, Na2HPO4, or Na3PO4?
In all three cases, the Na totally disassociates from rest of the molecule when you dissolve it in water. (And all are highly soluble in water.) Don't worry about the H atoms. They stay with the PO4.
The solution's molarity is 2 molar. (Note that "molarity" is NOT a unit.) That means there are 2 moles of sodium phosphate per liter.
500 mL is half a liter, therefore the sample has half of 2 moles of sodium phosphate. So, 1 mole of sodium phosphate.
Assuming you have NaH2PO4, then you have 1 mole of Na+ ions. For the other two chemicals, multiply by 2 or 3 as necessary.
I'm not telling you how to convert moles to numbers. If you can't do that, you should flunk chemistry.
What else can I help you with?
What is the most commonly used measure of concentration for an aqueous solution?
The most commonly used measure of concentration for an aqueous solution is molarity, which is the number of moles of solute per liter of solution.
Is Magnesium phosphate solid or aqueous?
Magnesium phosphate is typically a solid compound at room temperature. In aqueous solutions, it can dissociate into its ions, magnesium (Mg2+) and phosphate (PO43-).
What is the molarity of H plus in an aqueous solution that is 0.17 M HCl?
The molarity of H+ ions in a 0.17 M HCl solution is also 0.17 M because HCl dissociates completely in water to yield H+ and Cl- ions. Therefore, the concentration of H+ ions is equal to the concentration of HCl in this case.
What is the molarity of an aqueous solution that contains 12.2 grams of SrCl2 dissolved in 2500 milliliters of solution?
The molar mass of SrCl2 is 158.52 g/mol. First, convert the volume to liters (2500 mL = 2.5 L). Next, calculate the number of moles of SrCl2 in 12.2 grams. Finally, divide the number of moles by the volume in liters to find the molarity.
What is the balanced equation for ammonium phosphate in an aqueous solution?
The balanced equation for ammonium phosphate in an aqueous solution is: (NH4)3PO4(aq) → 3NH4+(aq) + PO43-(aq)
What is the most commonly used measure of concentration for an aqueous solution?
The most commonly used measure of concentration for an aqueous solution is molarity, which is the number of moles of solute per liter of solution.
What is the molarity of an aqueous solution containing 22.5 grams of sucrose in 35.5 milliliters of solution?
To find the molarity, first convert the grams of sucrose to moles using its molar mass. Sucrose has a molar mass of 342.3 g/mol. Then, convert the milliliters of solution to liters. Finally, divide the moles of solute by the liters of solution to get the molarity.
What is Another name for aqueous hydrogen phosphate?
Another name for aqueous hydrogen phosphate is phosphate ion.
Is calcium phosphate solid or aqueous?
Calcium phosphate is solid.
Is Magnesium phosphate solid or aqueous?
Magnesium phosphate is typically a solid compound at room temperature. In aqueous solutions, it can dissociate into its ions, magnesium (Mg2+) and phosphate (PO43-).
What is the molarity of H plus in an aqueous solution that is 0.17 M HCl?
The molarity of H+ ions in a 0.17 M HCl solution is also 0.17 M because HCl dissociates completely in water to yield H+ and Cl- ions. Therefore, the concentration of H+ ions is equal to the concentration of HCl in this case.
Another name for aqueous hydrogen phosphate is?
Hydrogen phosphate is also known as dihydrogen phosphate.
What does sodium phosphate and iron nitrate make?
When sodium phosphate and iron nitrate react, they form iron phosphate and sodium nitrate. This is a double displacement reaction where the cations and anions in the reactants switch partners to form new compounds.
What is the molarity of an aqueous solution that contains 12.2 grams of SrCl2 dissolved in 2500 milliliters of solution?
The molar mass of SrCl2 is 158.52 g/mol. First, convert the volume to liters (2500 mL = 2.5 L). Next, calculate the number of moles of SrCl2 in 12.2 grams. Finally, divide the number of moles by the volume in liters to find the molarity.
What is the balanced equation for ammonium phosphate in an aqueous solution?
The balanced equation for ammonium phosphate in an aqueous solution is: (NH4)3PO4(aq) → 3NH4+(aq) + PO43-(aq)
What is the molarity of acetone in water?
The question, as worded, is a little ambiguous. Rather, the question you should be asking is “What is the molarity of a 125 ml aqueous solution containing 10.0g of acetone?” Acetone is roughly 58 grams per mole. Therefore, a 125 mil solution with 10 g of acetone would contain roughly 0.17 moles, and the molarity would be roughly 1.4See the Related Questions for more information about how to calculate the molarity of a solution
Calculate the mole fraction of HCl in 20 percent aqueous solution?
The mole fraction of HCl in a 20% aqueous solution can be calculated by converting the percentage to a molarity concentration. Assuming the density of the solution is 1 g/mL, a 20% solution means 20g of HCl in 100g of solution. If the molar mass of HCl is 36.5 g/mol, we can calculate the molarity and then use it to find the mole fraction of HCl in the solution.
