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If 250.0 mL of 0.354 M Phosphoric acid need to be prepared, how many grams of H3PO4 need to be added to water to make this solution
A river narrows at a rapids from a width of 15m to a width of only 6.0m. The depth of the river before the rapids is 2.7m ; the depth in the rapids is 0.70m. Find the speed of water flowing in the r
so I have the reaction CuCl2 + H4ClSiO4. what I dont have is what this makes afterward, could someone please explain to me what the Molecular, total ionic and net ionic equations would be
An iron bolt is used to connect two iron plates together. The bolt must withstand shear forces up to about 3150 N. Calculate the minimum diameter for the bolt
100 ml sample of hard water is titrated with the ETDA solution in problem 2. the volume of EDTA required to reach the end point is 22.44 ml
What are the 6 kingdoms used to classify all living organisms and list all six kingdoms and what organisms are in each.
Complete combustion of 7.60 g of a hydrocarbon produced 24.3 g of CO2 and 8.70 g of H2O. What is the empirical formula for the hydrocarbon?
A 22.5-kg rock is sliding on a rough, horizontal surface at 9.50 m/s and eventually stops due to friction. What average power is produced by friction as the rock stops
Lead ions can be removed from solution by precipitation with sulfate ions. Suppose that a solution contains lead(II) nitrate. Write complete ionic equation to show the reaction of aqueous lead(II) n
A spherical weather balloon is filled with hydrogen until its radius is 3.40 m, Find the buoyant force acting on the balloon, assuming the density of air is 1.29 kg/m3.
What is the acceleration due to gravity - The mass of the wire is negligible compared to the mass of the ball. Determine the acceleration due to gravity.
The crystal structure of an element X can be described as follows: X atoms form a face-centred cubic lattice with an edge length of 356.7 pm. In addition, there are X atoms occupying every other tet
A 0.2500 g sample of impure potassium chloride was treated with an excess of AgNO3. The precipitate was filtered, washed, and dried in a crucible with an empty mass of 34.9736 g.
5.00 mL of a 0.650 M solution of oxalic acid are dilute to 25.00 mL. If 27.11 mL of a NaOH solution are required to neutralize this diluted oxalic acid, what is the concentration of the NaOH in mola
From the top of a 40.0m high cliff, two rocks are simultaneously thrown. One is thrown upwards at 20.0m/s, the other is thrown downwards at 8.0 m/s. How far apart are the two rocks after 1.5 seconds
A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.65 104 m/s, What is the orbital speed of the second satellite
Give that 41.05mL of 0.551 M NaOH are needed to react completely with 5.343 g, sand-contaminated sample of benzoic acid (C6H5OOOH, a monoprotic acid,) answer the follwing questions.
A pipe carrying 20°C water has a diameter of 2.4 cm. Estimate the maximum flow speed if the flow must be streamline
A spherical balloon has a radius of 7.35m and is filled with helium. Determine the largest mass of cargo the balloon can lift
small ferryboat is 4.00 m wide and 6.00 m long. When a loaded truck pulls onto it, What is the weight of the truck
If he struck a ball with the a speed and launch angle that would result in a maximum 120m horizontal range on Earth, how far would it go?
An undiscovered planet, many lightyears from Earth, has one moon in a periodic orbit. calculate the moon\'s radial acceleration
Potential energy of a not obeing Hooke's law spring is given by the equation U(x)=5.00(J/m)x - 2.00(J/m3)x3, What is the expression for the restoring force of the spring
A small rock with mass 0.200 kg is fastened to a massless string with length 0.750 m to form a pendulum. What is tension in the string at the lowest point