you are dying a sample of Ba3(PO4)2. after 5 minutes of drying it weighs 1.2034 g. you continue to dry the sample for another 5 minutes and now it weighs 1.9345 g. what is the percent change in mass?
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you are dying a sample of Ba3(PO4)2. after 5 minutes of drying it weighs 1.2034 g....
Your fabric weighs 10.20 g. The wet weight immediately after padding is 18.87 g. After drying and curing, your sample weighs 11.02 g. What is the % Dry Add-on?
Determine the mass (in g) of Ba3(PO4)2 that is produced when 125 mL of a 4.55×10-2 M Ba(NO3)2 solution completely reacts with 519 mL of a 6.92×10-2 M Na3PO4 solution according to the following balanced chemical equation. 3Ba(NO3)2(aq) + 2Na3PO4(aq) → Ba3(PO4)2(s) + 6NaNO3(aq)
A sample containing phosphorus weighs 1.342 g. The phosphorus containing compound in this sample is P4010. A gravimetric experiment was performed and phosphorus in the sample was precipitated as Ca3(PO4)2. The mass of the isolated precipitate is 0.752 g. Find the mass % of phosphorus in the sample.
You are given a 2.9265 g sample of a substance with the generic formula MCl2(H2O)6. After completely drying the sample (which means removing the 6 moles of H2O per mole of MCl2), the sample weighs 1.5969 g.
Excess hydrochloric acid is reacted with a sample of potassium carbonate. After drying, the potassium chloride weighs 2.31 g. What is the volume of carbon dioxide gas produced if the reaction occurs at 21 C and 746 mmHg? K2CO3 (s) + 2HCI (aq) --------> 2KCI (aq) + H2O (I) + CO2 (g) A. 0.381 L B. 0.192 L C. 1.52 L D. 0.757 L
A paint company claims their paint will be completely dry within 45 minutes after application. Recently, customers have complained dryingtimes are longer than the claimed 45 minutes. A consumer advocate group takes a random sample of 25 paint specimens and records their drying times. The average drying time x is 50. Consider dryng time, for all test specimens, to be normally distributed with σ = 9. Suppose the claimed drying time is true, that is μ answer to four decimal...
A student is given a sample of a manganese(II) chloride hydrate. She weighs the sample in a dry, covered crucible and obtains a mass of 24.747 g for the crucible, cover, and sample. Earlier she had found that the crucible and cover weighed 23.599 g. She then heats the crucible to drive off the water of hydration, keeping the crucible at red heat for about 10 minutes with the cover slightly ajar. She then lets the crucible cool, and finds...
undisturbed soil sample has a total mass of 2290 g and volume of 1.15 x 10 cm'. Specifica ity of the soil mineral G. = 2.68. Recall pw = 1 g/cm'. (a) A natural water content test of the sample gave the following results mass of container: 17.31 g mass of container plus wet soil (before drying in oven) 43.52 g mass of container plus dry soil (after drying in oven) 39.86 g What is the natural water content of...
3.P,010 is a drying agent that efficiently absorbs up to 38% of its own weight in water. If a 4.54 g sample of P,010 absorbs 0.535 g of H20, what is the mass percent of hydrogen in the sample? mass %H
2. A 30 cm sample of dry soil from an aquifer weighs 80 g. When the soil is poured into a graduated cylinder, it displaces 25 mL of water. a. What is the porosity of the soil? b. What is the average density of the soil particles?