General Chemistry Answers

Define shielding effect and describe its trends in periodic table wit suitable examples

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If the C2H3O2– ion concentration in a solution is 0.554 M, what is the concentration of Ca(C2H3O2)2?

Calculate [h3o+] at 25 grades celsius when [oh-]=2.5 x 10 ^-9M

1. Calculate the freezing and boiling points of a solution prepared by dissolving 15.5 g of Al(NO₃)₃ in 200.0 g of water.

The molar mass of (NH₄)₂CO₃ is ?( Mm N=14 g/mol, H=1 g/mol, C=12 g/mol, O=16 g/mol)

A 40.7g of a non-electrolyte is dissolved in 220g of water to make a solution. The solution's freezing point is -5.53°C. With the given data, what is the molar mass of the solute?

Given:

Pb(SO4)2 + LiNO3 -> Pb(NO3)4 + Li2SO4

1. How many grams of lithium nitrate will react with 7 moles of lead sulfate?

2. How many moles of lead nitrate will react with 10 moles of lithium sulfate?

3. How many grams of lithium nitrate can be produced from 65g of lead nitrate?

4. How many grams of lithium sulfate can be produced from 30g of lead sulfate?

5. How many grams of lithium sulfate can be produced from 15 moles of lead sulfate?

with solution if possible

Determine the mass of the compound in a 1.75L sample of 0.350M Al(NO₃)_3.

When added to water ammonium phosphate dissociates into ammonium ions and phosphate ions. 

Determine the concentration of ammonium phosphate if the ammonium ions have a concentration of 19.5M. 

A 15mL sample of solution diluted to 1.75L to make a concentration of 0.0890M. Determine the initial concentration of the solution.

350 g of magensium sulfate is dissolved in 575mL of water. Determine the concentration. 

What is the concentration of each ion in a 3.25 mol/L solution of aluminum sulfate?

A beaker contains 350 mL of 7.92M solution. Determine the concentration if of the solution is 250mL of water is added to the beaker

1. What volume of a 6.0 mol/L sulfuric acid solution would be required to make 500 mL of 0.24 mol/L sulfuric acid?