Calculate the Millimoles of Iron(II) Bromide Solution Added to Reaction Flask

What is the calculation to determine the millimoles of iron(II) bromide solution added to a reaction flask?

The chemist has added approximately 550 millimoles of iron(II) bromide to the flask. This is calculated using the chemical formula, concentration, and volume of the solution. In chemistry, you can determine the amount of substance in a solution using the formula n = c * V, where 'n' is the amount of substance in moles, 'c' is the concentration of the substance in mol/L, and 'V' is the volume of the solution in liters. The volume needs to be converted from milliliters (mL) to liters (L). So, 405.0 mL = 0.405 L. Applying the formula, the millimoles of iron(II) bromide in the flask would be: n = 1.36 mol/L * 0.405 L = 0.5502 mol. To convert this to millimoles, we multiply by 1000, which gives us 550.2 millimoles. Rounded to 3 significant figures, this becomes 550 millimoles of iron(II) bromide.

Moles and Concentration Calculation

Iron(II) bromide solution added to a reaction flask:

To calculate the millimoles of iron(II) bromide solution added to the reaction flask, we first need to determine the amount of substance in moles using the concentration and volume of the solution. The formula for calculating the amount of substance in a solution is n = c * V, where 'n' is the amount of substance in moles, 'c' is the concentration of the substance in mol/L, and 'V' is the volume of the solution in liters.

Given data:

Volume of iron(II) bromide solution added = 405.0 mL = 0.405 L

Concentration of iron(II) bromide solution = 1.36 mol/L

Now, substitute the values into the formula:

n = 1.36 mol/L * 0.405 L

n = 0.5502 mol

Therefore, the chemist has added approximately 0.5502 moles of iron(II) bromide to the flask. To convert this to millimoles, we multiply by 1000:

0.5502 mol * 1000 = 550.2 millimoles

Rounded to 3 significant figures, the millimoles of iron(II) bromide added to the flask is 550 millimoles.

It is crucial to understand the concept of moles and concentration in chemistry as they play a significant role in quantifying the amount of substance in a solution. Moles represent the amount of a substance, while concentration indicates the amount of solute dissolved in a solvent. By applying the formula n = c * V, chemists can accurately determine the quantity of a substance present in a solution, facilitating various chemical calculations and analyses.

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