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Utilize your recorded weight of cobalt (II) nitrate to compute the exact concentration of your stock cobalt (II) nitrate solution in the volumetric flask. I utilized 2.18 g of 0.15 M cobalt (II) nitrate to prepare as well as dissolve in 25mL of deionized water then added 35 more mL of rinsing to the volumetric flask. Explain what is the concentration?
A block of Iron has a mass of 483 g. What is the mass of a block of Graphite that has the same volume as the block of Iron?
Write a balanced equation for 0.1g sodium peroxoborate, 6 mL HCl. TO this acidified solution add KI dropwise.
A copper wire (density = 8.96 g/cm3) has a diameter of 0.41 mm. If a sample of this copper wire has a mass of 12 g, how long is the wire?
If only COF2 is present initially at a concentration of 2.00 M , what concentration of COF2 remains at equilibrium? Express the molar expression numerically
Urea ((NH2)2CO) can be formed from ammonia and carbon dioxide as shown in the following reaction. ?H° value for this synthesis is -134.0 kJ, and ?S° is -424.0 J/K. Calculate the ?G°f for urea. 2NH3(g) + CO2(g) ? (NH2)2CO(s) + H2O(l)
Rank these elements according to first ionization energy (highest to lowest) : Ne, F, O, N, C, B, Be, Li. HINT: There is a general trend for ionization energy within a period of the periodic table
Write the equation for this reaction, labeling the acid, base, conjugate acid, and conjugate base
What weight of A would be removed from the same solution by successive extraction with four portions of 25mL of hexanes? How much hexanes would be required to remove 98.5% of A in single extraction?
how many grams of sodium ion na are in 2.50 g toothpaste. a toothpaste contains 0.24 by mass sodium fluoride used to
a carnot cycle uses 1.00 mol of a monatomic perfect gas as the working substance from an initial state of 10.0 atm and
If one cubic centimeter section of a reactor has a macroscopic fission cross section of 0.989 cm-1, and if the thermal neutron flux is 1x10^15 n/cm2 s, calculate the fission rate per cubic centimeter.
a what is the ground state energy of the electron in a hydrogen atom expressed in units of electron volts ev?b what is
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