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A box of 20.0 kg slides up a 12.0 m long incline at an angle of 30.0 degrees with the horizontal. A force of 150 N is exerted to the box to pull it up the incline. The exerted force forms an angle o
An unknown compound composed only of phosphorous and fluorine was analyzed to estimate its chemical formula in the following way: 0.2324 g of solid compound was placed in a 378-mL rigid vessel.
The two spacecraft fly away from Earth, traveling in precisely opposite directions. As evaluated by an observer on Earth, spacecraft A travels at a speed of around 0.392c and spacecraft B travels at
An Aqueous solution of barium (II) nitrate is mixed with aqueous ammonium sulfate to form the solid barium (II) sulfate and the aqueous ammonium nitrate.
Write the formula for forecasting average cost of the compact car in future measuring variable t as years since 2000. Ensure to use lower case variables t and c.
What is the molarity of the permanganate solution when a solution of KMnO4 is standardized against sodium oxalate (fw=134.00 g) as a primary standard. 0.2121 g of this primary standard requ
The maximum electric field 8.3 m from a point light source is around 2.7 V/m. Determine (i) the maximum value of the magnetic field in Tesla and (ii) the average intensity of light there in W/m^2?
Stearic acid (C18H36O2) is a typical fatty acid, a molecule with a long hydrocarbon chain and an organic acid group (COOH) at the end.
Four uniform spheres having masses mA = 550 kg, mB = 200 kg, mC = 1800 kg and mD = 100 kg, encompass (x, y) coordinates of (0, 50 cm), (0, 0), (-80 cm, 0) and (40 cm, 0), correspondingly. Find out t
Explain what factor favors the reaction at the primary carbon, and what factor favors the reaction at the tertiary carbon." "1-Chloro-3-methyl-2-butene reacts with ethanol in a Sn1 fashion to yield
A small metal sphere carrying a total charge of q1= -2.8C, is held in a stationary position through insulating supports. A second small metal sphere, having a total charge of q2 = -7.8C with a mass
Explain how much is the weight of Na2CO3 in the unknown when .7316g of an unknown carbonate (contains K2CO3 and Na2CO3) is dissolved and diluted to 100mL. 25mL of this solution is titrated
What is the concentration of the silver nitrate solution when 10.00 mL of silver nitrate solution is titrated to the equivalence point with 8.50 mL of a 0.1100 M HCL solution.
Based on the model, every additional family member increases predicted costs by how much? Based on significance F-test, is the model good prediction equation?
A plum is positioned at coordinates (-3.36 m, 0, 3.40 m). In unit-vector notation, find out the torque about the origin on the plum when that torque is due to a force whose only component is (i) Fx
Suppose you react this mixture with an excess of oxygen to form 5.779g of Fe2O3. Consider a 5.43g mixture of FeO and Fe3O4. Determine the percent by mass of FeO in the original mixture.
An air-filled parallel-plate capacitor consists of a capacitance of 2.1 pF. The separation of the plates is twice, and wax inserted among them. The new capacitance is 2.6 pF. Determine the dielectr
The molal freezing point depression constant of benzene Kf= 5.09oCkg/mole. Benzene, C6H6, a common non-polar organic solvent, is neither acidic nor basic, and can neither donate nor accept hydrogen bo
Determine the mechanical benefit of a 15 m long inclined plane which is three m higher on one end than on the other.
What is the molar heat of combustion of caffeine (in kJ) when a 1.09-g sample of caffeine C8H10N4O2 burns in a constant-volume calorimeter that has a heat capacity of 7.85kJ/K. The temperature
Find out the functions of NADH and ATP in the cells? Determine the numbers of ATP and NADH can baker yeast form from each mole of glucose through the glycolysis pathway (glucose to ethanol) with and
The two bodies are now released. Explain the motion of the center of mass and find out its acceleration.
Explain why the calcium hydroxide is not soluble in water, but is readily soluble in an acidic solution and also include a chemical equation that accounts for this solubility.
Determine the molar mass (in grams/mol) of the unknown gas. An effusion container is filled with 7 L of an unknown gas, and it takes 90 s for the gas to effuse into a vacuum.
A circular hole of 1.25 cm in diameter is cut in the side of a large water tank, 20.0 m beneath the water level in the tank. The top is open to the air. Compute: i) The speed of efflux. ii) The volu