Chapter 1, Problem 11P

A 46.60-gram pycnometer was filled with 100.50 grams of liquid. When filled with insoluble powder, the pycnometer weighs 84.60 grams. When the insoluble powder and liquid were combined, the pycnometer weighed 172.8 grams. If the density of the liquid is 0.85 g/cm3, what is the density of the insoluble powder?     2.1 g/cm3     2.6 g/cm3     3.1 g/cm3     None of the Above

B. Ann performed a sample analysis for potassium content where the results are the following: 14.92%, 14.915, 14.88%, AND 14,91%. The actual amount of potassium was found to be 14.90%. Are the acquired values precise or accurate compared to the actual amount? Why?

Please answer question and just send me the paper solutions asap dont type the answer question 4 please dont give the wrong solutions And use this formula

Calculate the approximate number of atoms in abacterium. Assume that the average mass of an atom in thebacterium is ten times the mass of a hydrogen atom. (Hint:The mass of a hydrogen atom is on the order of 10−27 kgand the mass of a bacterium is on the order of 10−15 kg. )

These are the densities of several materials: 1) Aluminum: 2.70 g/cm32) Benzene: 0.8793) Copper: 8.924) Fresh Water: 1.005) Ice: 0.9176) Lead: 11.37) Oak: 0.7108) Platinum: 21.49) Tin: 7.30You have a cylinder of material 6 (if necessary, contained in a container), 5.7 cm long, radius of 0.79 cm, Calculate its mass in grams.

A sample of carbon tetrachloride rose to a height of 4.76 cm at 20°C in a capillary tube having an inside radium of 0.01 cm. What is the surface tension of chloroform? Ρ = 1.595 g/cm3

Sulfur compounds cause “off-odors” in wine, so winemakers want to know the odor threshold, the lowest concentration of a compound that the human nose can detect. The odor threshold for dimethyl sulfide (DMS) in trained wine tasters is about 25 micrograms per liter of wine (μg/l). The untrained noses of consumers may be less sensitive, however. Here are the DMS odor thresholds for 10 untrained students: 31   31    43    36    23    34    32    30    20    24 Assume that the standard deviation of the odor threshold for untrained noses is known to be σ = 7 μg/l. The first condition of inference requires the 10 untrained students represent a simple random sample from all untrained consumers. This is not likely but we choose to believe so. The second condition requires the distribution of the thresholds for untrained noses is not too far from a normal distribution. Given the following stem plot, the second condition is also satisified. 2|0343|0112464|3   Give a 95% confidence interval for…

One mole of hydrogen peroxide, H2O2, would consist of how many grams? (13.5) (a) 6.02 1023 (b) 17.0 (c) 34.0 6.02 1023 (d) 34.0

How many naturally occurring elements are there?