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Consider the following assumptions about the structure of matter on the microscale ("molecular scale) as you answer the remaining questions. •I. All matter is made of small particles. •II. The macroscale ("real world") behavior of materials can be related to the behavior and characteristics of the individual particles that make up the matter. •III. Attractive "forces" exist between individual particles (particles are "sticky" towards each other). Question 4: Gases can be compressed easily. What does this imply about the amount of space that must be present between the individual gas particles? A. lots of space between gas particles B. little to no space between gas particles C. nothing about the space between gas particles can be inferred.
P4(s) + 6F2(g) --> 4PF3(g) How many grams of fluorine are needed to react with 6.20g of phosphorus?
Mercuric sulfide HgS is one of the least soluble salts known, with Ksp=1.6x10^-54 at 25 C. Calculate both the molar solubility and the solubility of HgS
A green leaf has a surface area of 2.00 cm^2. If solar radiation is 1030 W/m^2, how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 nm for solar radiation.
Determine the molality of a solution prepared by dissolving 0.500 moles of CaF2 in 11.5 moles H2O.
adding the two portions of water into your calorimeter the temperature of the mixed portions of water to be 45 oC. determine the heat capacity of the calorimeter?
how many joules are required to melt a 325 degrees Celsius ice cube at 0 degrees Celsius and to warm the liquid to 15 degrees Celsius
Calculate the pH of each of the following solutions. (a) 0.500 M HONH2 (Kb = 1.1 10-8) (b) 0.500 M HONH3Cl
The molar absorptivity for the complex formed between bismuth (III) and thiourea is 9.32 x 103 L mol-1 cm-1 at 470 nm. Calculate the range pf permissible concentrations for this complex if the percent transmittance is to be greater than 15.0 % and..
Methyl Orange is an acid-base indicator. In dilute solution, at pH greater than 4.4, it is yellow. At pH=3.2 the solution appears red. Draw a structure of the species that is formed at the lower pH of the acid proton adds to the azo nitrogen atom ..
A 1.0 L solution has a mixture of 0.05 M NaH2PO4 (pKa = 6.86) and 0.10 M Na2HPO4. How much 1.0 M NaOH should be added to bring the solution to pH 7.4?
what is the molar mass of glucose if 22.5g gives a freezing point of -0.930 C when dissolved in 250 g of water?
The average radius of a molecule of lysozyme, an enzyme in tears is 1430pm,what is the radius in nanometers.
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