a student separated a 1.50 g sample of sand mixed with salt and obtained 0.70 g of salt and 0.65 g of sand. what percent recovery of the initial mixture was obtained?
You had 1.50 to start; you recovered 0.70 + .65 = 1.35g.
%recovered = (1.35/1.50)*100 = ?
%recovered is 90%
Well, if the student obtained 0.70 g of salt and 0.65 g of sand from the initial 1.50 g mixture, then we can calculate the total mass recovered. So let's break out our math skills:
0.70 g (salt) + 0.65 g (sand) = 1.35 g (total mass recovered)
Now, we can calculate the percentage recovery using the formula:
(Recovered Mass / Initial Mass) × 100
So let's plug in the numbers:
(1.35 g / 1.50 g) × 100 = 90% recovery
So, the student achieved a 90% recovery rate. That's pretty impressive! Though I must say, I hope the student didn't accidentally lose the remaining 0.15 g while conducting the experiment. Maybe they should double-check their pockets, just in case!
To determine the percent recovery of the initial mixture, we need to calculate the total amount of the initial mixture and divide the obtained amount by the initial amount, then multiply the result by 100.
Step 1: Calculate the initial amount of the mixture.
Initial amount = Salt + Sand
Initial amount = 0.70 g (salt) + 0.65 g (sand)
Initial amount = 1.35 g
Step 2: Calculate the percent recovery.
Percent recovery = (Amount obtained / Initial amount) x 100
Percent recovery = ((0.70 g + 0.65 g) / 1.35 g) x 100
Percent recovery = (1.35 g / 1.35 g) x 100
Percent recovery = 1 x 100
Percent recovery = 100%
Therefore, the student obtained a 100% recovery of the initial mixture.
To calculate the percent recovery of the initial mixture, we need to determine the total mass of the initial mixture and the total mass of the recovered components.
The initial mixture consists of sand and salt. The mass of the initial mixture can be determined by adding the mass of sand and salt obtained:
Mass of sand = 0.65 g
Mass of salt = 0.70 g
Total mass of the initial mixture = Mass of sand + Mass of salt
= 0.65 g + 0.70 g
= 1.35 g
Now, we can calculate the percent recovery using the formula:
Percent Recovery = (Total mass of recovered components / Mass of the initial mixture) x 100
Total mass of recovered components = Mass of salt obtained
= 0.70 g
Percent Recovery = (0.70 g / 1.35 g) x 100
≈ 51.9%
Therefore, the student obtained approximately a 51.9% recovery of the initial mixture.