Find the concentration of calcium ions in a solution
Find the concentration of calcium ions in a solution made by adding3.50 g of calcium fluoride to 750. mL of 0.125 M NaF. [ForCaF2, Ksp = 3.95 ×10-11
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We learned that silicon is the second most abundant element in Earth's crust, accounting for more than one-fourth of the mass of the crust.
Let E1 denote the event that a structural component fails during a test and E2 denote the event that the component shows some strain, but does not fail. Given P(E1) = 0.38 and P(E2) = 0.32. Round your answers to two decimal places (e.g. 98.76).
Cable AC is equipped with a turnbuckle so that its tension can be adjusted and a strain gauge that allows its tension to be measured. If the tension in cable AC is 40 N, what are the tensions in cables AB and AD?
Draw a thermal circuit from inside to the outside of the tube and calculate each thermal resistence. b) Calculate the rate of heat loss per unit length, q', from the pipe.
The piston is then moved by some unknown force to compress the nitrogen until it reaches a pressure of 1.2 MPa. If the process is reversible, how much work of compression is required?
Consider the following reaction:Ni2+(aq) +Sn(s)-> Ni(s)+Sn2+determine the minimum ratio of the tin ion to the nickel ion necessary to make the reaction spontaneous as written.
What is the wavelength in nm of the radiation emitted when anelectron in hydrogen atom moves from the ni = 5 level tothe nf = 3 level?
A spring stretches 7.2 cm when a 0.39 kg block is hung from it. If a 0.87 kg block replaces the 0.39 kg block, how far does the spring stretch?
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