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Explain what volume of H2S was collected at 32 degrees C when the atmospheric pressure was 749 torr? CuS (4.22 g) was mixed with excess HCl and the resulting H2Swas collected over water. The vapor
The drawing exhibits a laser beam shining on the plane mirror which is perpendicular to the floor. The angle of incident of the beam is 30.0°.
Calculate how many moles of HCl can be produced if 2.5 moles of hydrogen react with chlorine by the following reaction: H2 + Cl2---> 2HCl
Determine the freezing point for a 3.13 m aqueous solution of NaCl. Determine the increase in the boiling point, ΔT, for a1.39 m solution of sucrose (dissolves as a molecule) in the water.
Determine the least magnitude of the force which will succeed in lifting the wheel onto the curb if the force is exerted at the center of the wheel?
Determine the vapor pressure of water for this solution? Sugar is dissolved in the hot water at 45oC until the mole fraction of water decreases to 0.862.
Determine position of mass at any time t if there is no external force and no air resistance. Find circular frequency, natural frequency and period for vibrations.
A tall tree is mounting across a river from you. You would like to recognize the distance among yourself and the tree, and also its height, however is not capable to make the measurements directly.
If the absorbance of this compound were measured over a wide range of wavelengths of light, it would absorb not a single wavelength, but colors of varying energies centering on the wavelength of ma
The floor of a rail-road flatcar is loaded with loose crates encompassing a coefficient of static friction of 0.25 with the floor. When the train is originally moving at a speed of 50 km/h, in how s
What force is applied to the trash when the input force is 330 N? In the hydraulic press used in a trash compactor, the radii of the input piston and the output plunger are 6.4x10-3m and5.1x10-2m,
By using a ray diagram drawn to scale, determine the location of the image that this light generates in the concave mirror.
Determine the potential of a platinum electrode immersed in a solution that is prepared by mixing the 25.00ml of 0.0918M SnCl2 with an equal volume of 0.1568M FeCl3.
Identify the molar mass of the yellow solid in g/mol if a 0.500 g sample of a nonvolatile yellow crystalline solid is dissolved in the 22.5 g of benzene, producing a solution that freezes at the 5.
An object is positioned in front of the convex mirror. Sketch a convex mirror (radius of curvature 14 cm) to scale, and put an object 31 cm in front of it. Let the object height be 4 cm. By using a
If the zinc ion concentration is kept constant at 1 M, and the chloride ion concentration is decreased from the 1 M to0.001 M, the cell voltage should
The chicken farmer surveyed the flock with given results. Farmer has: 7 thin brown hens, 9 fat red roosters, 2 fat red hens, 26 fat roosters, 37 fat chickens. Find number of chickens which are fat, b
A light is at the middle of the bottom of a swimming pool, 2 meters deep. Find out the diameter of the biggest circle on the surface of water via which the light can be seen?
Determine the equilibrium vapor pressure of water for this solution? 29.0 g of the nonvolatile solute urea (M.W. = 60.06 g/mol) is dissolved in the 327 g of water at the 60oC.
Assuming that the temperature of both solutions was initially 25.0°C and that the final mixture has a mass of 412.4g and a specific heat capacity of 4.18J/°C·g, determine the final te
A certain beam of light consists of a wavelength 438 nm in water and 400 nm in carbon tetrachloride. Determine (i) the index of refraction of carbon tetrachloride and (ii) the wavelength of light in
Each of these compounds contains both ionic and covalent bonds use Lewis structures to show which kinds of bonding occur between the atoms in the compound?
In an x-ray diffraction experiment, employing x-rays of wavelength lambda = 0.500 x 10^-10m, a first-order maximum take place at 5.00 degrees off the crystal plane. Determine the distance among the
An air bubble rises from the bottom of a lake 15 m deep. The temperature at the bottom of the lake is around 4 degree Celsius, and near the surface it is around 20 degree Celsius. Determine how many
Give the Lewis structures and demonstrate the formal charges for ethanol (C2H5OH), ethane (C2H6), and ethylamine (C2H4NH2). In each of these compounds, there is a C-C bonding center.