The concentration of citric acid (H3C6H5O7) in citric fruits ranges from 0.005 M to 0.30 M. Consider a 28.4 mL sample of pure lime juice with a citric acid concentration of 0.185 M. How many moles of citric acid are in the sample?

sample volume * molarity = moles

.0284 L * 0.185 moles/L = ? moles

To find the number of moles of citric acid in the sample, you can use the formula:

moles = concentration (M) x volume (L)

First, convert the given volume from milliliters (mL) to liters (L):

volume = 28.4 mL = 28.4 mL/1000 mL/L = 0.0284 L

Next, plug in the given concentration and volume into the formula:

moles = 0.185 M x 0.0284 L

Solving this equation will give you the number of moles of citric acid in the sample.

To find the number of moles of citric acid in the sample, you can use the formula:

moles = concentration * volume

Given:
Concentration of citric acid in lime juice = 0.185 M
Volume of lime juice sample = 28.4 mL (or 28.4 cm³)

First, convert the volume of the sample to liters:
Volume (L) = Volume (mL) / 1000
Volume (L) = 28.4 mL / 1000 = 0.0284 L

Then, plug in the values into the formula:
moles = 0.185 M * 0.0284 L

Now, perform the calculation:
moles = 0.005254 mol

Therefore, there are approximately 0.005254 moles of citric acid in the 28.4 mL sample of lime juice.