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A nail is measured with a ruler and its length is reports as 5.46 cm. Select ALL the statements that are correct about the certainty and uncertainty represented in this recorded measurement. 1. The uncertainty can be expressed by reporting the measurement as 5.46 +_ 0.1 cm 2. The uncertainty is in the final digit of the measurement 3. All three digits shown in the measurement are known with certainty 4. The uncertainty can be expressed by reporting the measurement as 5.46 +_ 0.01 cm
How many g of NaCl are required to prepare 250.0 mL of a 0.3440 M solution of NaCl in water?
What mass of potassium chromate is needed to add to exactly 500g of water to produce a solution with vapor pressure of 21.50 torr at 24 C
Atmospheric pollution is a problem that has recieved much attention. not all pollution, however, is from industrial sources. Volcanic eruptions can be a significant source of air pollution.
Sodium carbonate (Na2CO3rm Na_2CO_3) is used to neutralize the sulfuric acid spill. How many kilograms of sodium carbonate must be added to neutralize 3.02×103kgkg of sulfuric acid solution
a) write a balanced equation for the reation. b) When 46.0 g of KClO3 is heated, 12.1 g of O2 is formed. How many grams of KCl is also formed? c) What is the percent yield of O2 for the reaction
A chemistry student needs of 40 ml chloroform for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of chloroform is 1.48g x cm^-3 . Calculate the mass of chloroform the student should w..
What is the maximum number of orbitals that can be identified by each of the following sets of quantum numbers?
Name the anion obtained by removing one oxygen atom from the perbromate ion, BrO4 -
Use condensed formulas or line angle formulas to illustrate the saponification reaction of the fatty acid that is BOTH an OMEGA-6 AND AN 18:2 FATTY ACID
The ionic structure of NH4Cl follows the radius-ratio rule. The ionic radii of NH4+ and Cl are 143 pm and 181 pm, respectively. Use the radius-ratio rule to predict the ionic structure. Describe the properties of the unit cell.
The activity coefficients for acetic acid and the acetate ion are 1.000 and 0.775, respectively, in a solution with an ionic strength of 0.10 M.
Reaction 1 uses 0.260 of reactant, and Reaction 2 uses 0.590 of reactant. How many times faster is Reaction 2 compared to Reaction 1.
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