Chemistry concepts and calculations

A critical reaction in the production of energy to do work or drive chemical rea

A critical reaction in the production of energy to do work or drive chemical reactions in biological systems is the hydrolysis of adenosine triphosphate, ATP, to adenosine diphosp…

A critical reaction in the production of energy to do work or drive chemical rea

A critical reaction in the production of energy to do work or drive chemical reactions in biological systems is the hydrolysis of adenosine triphosphate, ATP, to adenosine diphosp…

A cross country skier decides to use a reusable heat pack that utilizes polymer

A cross country skier decides to use a reusable heat pack that utilizes polymer crystallization to warm their hand on a cold day outside (the air temperature is -3.9 degree C and …

A cross-section is a slice through the Earth\'s crust and in this image you are

A cross-section is a slice through the Earth's crust and in this image you are looking at a side-view of the rock layers that exist beneath that surface. Different sedimentary roc…

A crude oil spill from a deep-water drilling platform is always possible. The de

A crude oil spill from a deep-water drilling platform is always possible. The density of crude oil ranges from 0.8 g/cm3 to 0.9 g/cm3. How might the density of crude oil affect it…

A crystal consists of a building block (an atom or group of atoms) that is repea

A crystal consists of a building block (an atom or group of atoms) that is repeated periodically through space. Describe the difference between the "crystal lattice", the arrangem…

A crystal consists of a building block (an atom or group of atoms) that is repea

A crystal consists of a building block (an atom or group of atoms) that is repeated periodically through space. Describe the difference between the "crystal lattice", the arrangem…

A cube made of platinum (Pt) has an edge length of 1.80 cm. The density of Pt is

A cube made of platinum (Pt) has an edge length of 1.80 cm. The density of Pt is 21.45 g/cm^3. Calculate the number of Pt atoms in the cube. Atoms are spherical in shape. Therefor…

A cubic closest-packed structure has hexagonally arranged layers of atoms in the

A cubic closest-packed structure has hexagonally arranged layers of atoms in the series ababab abcabcabc abacabacaba. abcbabcbabcba. aaaaaa In the sodium chloride unit cell, the c…

A current draft of the \"National Strategy for Trusted Identities in Cyberspace\

A current draft of the "National Strategy for Trusted Identities in Cyberspace" has been posted by the Department of Homeland Security. This question is not asking about privacy o…

A current of 0.500 A flows through a cell containing Fe2+ for 10.0 minutes. Calc

A current of 0.500 A flows through a cell containing Fe2+ for 10.0 minutes. Calculate the maximum moles of Fe that can be removed from solution? Assume constant current over time …

A current of 15.6 A is passed through an electrolysis cell containing molten CaC

A current of 15.6A is passed through an electrolysis cell containing molten CaCl2 for 38.8minutes. (a) Predict the products of the electrolysis and write the reactions occurring a…

A current of 250. A flows for 24.0 hours at an anode where Mn^2+(aq) is being co

A current of 250. A flows for 24.0 hours at an anode where Mn^2+(aq) is being converted to MnO_2(s). What mass of MnO_2 is deposited at this anode? a. 19.5 kg b. 12.9 kg c. 4.87 k…

A current of 4.11 A is passed through a Cu(NO3)2 solution. How long (in hours) w

A current of 4.11 A is passed through a Cu(NO3)2 solution. How long (in hours) would this current have to be applied to plate out 5.10 g of copper? Question 28 of 36 Incorrect X M…

A current of 5.21 A is passed through a Pb(NO3)2 solution for 1.40 hours. How much lead is plated out?

So I can't seem to get the correct answer. What I've done is: 5.21*1.4hr*60mins*60secs=26258 Then divide by 1 faraday 26258/96485= 0.27 moles Using the half reaction of Pb2+ only …

A current-carrying rectangular wire loop with width a 0.115 m and length b 0.205

A current-carrying rectangular wire loop with width a 0.115 m and length b 0.205 m is in the xy-plane, supported by a nonconducting, frictionless axle of negligible weight. A curr…

A customer asks a bartender for a mix of 125 mL Bacardi 151 (http://ki/Bacardi 1

A customer asks a bartender for a mix of 125 mL Bacardi 151 (http://ki/Bacardi 151, for those of you not familiar) with 50 mL water. The room is at 20 C. The bartender makes the m…

A cyanide solution with a volume of 22.00 mL was treated with 25.00 mL of Ni2 (c

A cyanide solution with a volume of 22.00 mL was treated with 25.00 mL of Ni2 (containing excess Ni^2+) to convert the cyanide into tetracyanonickelate(II) ion: 4 CN- (aq) + Ni^2+…

A cyanide solution with avolume of 12.73 mL was treated with 25.00 mL of Ni 2+ s

A cyanide solution with avolume of 12.73 mL was treated with 25.00 mL of Ni2+solution (containing excess Ni2+) to convert the cyanide totetracyanonickelate(II): 4CN- + Ni2+ ------…

A cyclic process on an ideal gas is shown in the pV diagram. The gas is brought

A cyclic process on an ideal gas is shown in the pV diagram. The gas is brought back to its initial state after 1 cycle. If the process is carried out in a clockwise manner (as th…

A cyclic process on an ideal gas is shown in the pV diagram. The gas is brought

A cyclic process on an ideal gas is shown in the pV diagram. The gas is brought back to its initial state after 1 cycle. If the process is carried out in a clockwise manner (as th…

A cyclone separator like that in the figure is used to remove fine solid particl

A cyclone separator like that in the figure is used to remove fine solid particles, such as fly ash, that are suspended in a gas stream. In the flue-gas system of an electrical po…

A cylinder at T = 300 K and P-2.0 MPa contains two components that are in vapor-

A cylinder at T = 300 K and P-2.0 MPa contains two components that are in vapor-liquid equilibrium. At 298 K, P virial equation of state: = 1.4 MPa. The vapor phase of each compon…

A cylinder bar with a mass of 96.03g has the followingdimensions: Length= 10.7cm

A cylinder bar with a mass of 96.03g has the followingdimensions: Length= 10.7cm Diameter= 0.982cm If the volume of the bar can be determined using theequation V= r2 L where r= ra…

A cylinder contains 0.5 kg of steam at the temperature of 100 degree C trapped b

A cylinder contains 0.5 kg of steam at the temperature of 100 degree C trapped below a piston. The piston is 1.3 kg and its area is 10 cm^2. The pressure above the piston is 100 k…

A cylinder contains 2 lbm of an ideal gas wth a gas constant Rof 53 ft lbf/lbm o

A cylinder contains 2 lbm of an ideal gas wth a gas constant Rof 53 ft lbf/lbm oR. The gas is initially at agauge pressure of 30 psi and temperature 100 oF. It is heated at consta…

A cylinder contains oxygen gas (O 2 ) at a pressure of 2.40 atm. The volume is 5

A cylinder contains oxygen gas (O2) at a pressure of 2.40 atm. The volume is 5.50L , and the temperature is 300K . Assume that the oxygen may be treated as an ideal gas. The oxyge…

A cylinder if fitted with a floating piston oriented horizontally (the air is th

A cylinder if fitted with a floating piston oriented horizontally (the air is the system and by having a floating piston it maintains constant pressure). It contains 24.5 L of air…

A cylinder is filled with pure oxygen. The initial pressure is 1 Atm and the tem

A cylinder is filled with pure oxygen. The initial pressure is 1 Atm and the temperature is OoC. Initially, the volume of the gas is 0.500 liter. The cylinder contains a small pie…

A cylinder is rotating about an axis that passes through the center of each circ

A cylinder is rotating about an axis that passes through the center of each circular end piece. The cylinder has a radius of 0.150 m, an angular speed of 52.0 rad/s, and a moment …

A cylinder of compressed gas rolls off a boat and falls to the bottom of a lake.

A cylinder of compressed gas rolls off a boat and falls to the bottom of a lake. Eventually it rusts and the gas bubbles to the surface. A chemist collects a sample of the gas wit…

A cylinder of compressed gas rolls off a boat and falls to the bottom of a lake.

A cylinder of compressed gas rolls off a boat and falls to the bottom of a lake. Eventually it rusts and the gas bubbles to the surface. A chemist collects a sample of the gas wit…

A cylinder of compressed gas rolls off a boat and falls to the bottom of a lake.

A cylinder of compressed gas rolls off a boat and falls to the bottom of a lake. Eventually it rusts and the gas bubbles to the surface. A chemist collects a sample of the gas wit…

A cylinder of helium is advertised to fill 50 9\" balloons. a. If a 9\" balloon

A cylinder of helium is advertised to fill 50 9" balloons. a. If a 9" balloon can hold a volume of 0.27 cubic feet and the temperature of gas is 25 degrees celcius, what is the ma…

A cylinder of nitrogen gas has a volume of 15,000cm cubed and pressure of 100 at

A cylinder of nitrogen gas has a volume of 15,000cm cubed and pressure of 100 atm. a) What is thermal energy of this gas at 20 degrees Celsius? b) The valve is opened and the gas …

A cylinder of oxygen gas contains 91.3 g O_2 if the volume of the cylinder is 8.

A cylinder of oxygen gas contains 91.3 g O_2 if the volume of the cylinder is 8.58 L, what is the pressure of the O_2 if the gas temperature is 21 degree C? In an experiment, you …

A cylinder with a movable piston contains 2.00g of helium, , at room temperature

A cylinder with a movable piston contains 2.00g of helium, , at room temperature. More helium was added to the cylinder and the volume was adjusted so that the gas pressure remain…

A cylinder with a moveable piston contains 92g of Nitrogen. The external pressur

A cylinder with a moveable piston contains 92g of Nitrogen. The external pressure is constant at 1.00 atm. The initial temperature is 200K. When the temperature is decreased by 82…

A cylinder with a moveable piston contains 92g of Nitrogen. The external pressur

A cylinder with a moveable piston contains 92g of Nitrogen. The external pressure is constant at 1.00 atm. The initial temperature is 200K. When the temperature is decreased by 55…

A cylinder with a moveable piston contains 92g of Nitrogen. The external pressur

A cylinder with a moveable piston contains 92g of Nitrogen. The external pressure is constant at 1.00 atm. The initial temperature is 200K. When the temperature is increased by 65…

A cylinder with a moveable piston contains 92g of Nitrogen. The external pressur

A cylinder with a moveable piston contains 92g of Nitrogen. The external pressure is constant at 1.00 atm. The initial temperature is 200K. When the temperature is increased by 59…

A cylinder, with a piston pressing down with a constant pressure, is filled with

A cylinder, with a piston pressing down with a constant pressure, is filled with 1.90moles of a gas (n1), and its volume is 48.0L (V1). If 0.800mole of gas leak out, and the press…

A cylinder, with a piston pressing down with a constant pressure, is filled with

A cylinder, with a piston pressing down with a constant pressure, is filled with 2.20 moles of gas (n1), and it's volume is 46.0 L (v1). 0.400 mole gas leak out, and the pressure …

A cylindrical Container contains a light (so that you can neglect its weight), a

A cylindrical Container contains a light (so that you can neglect its weight), airtight piston that can move up and down the inside of the cylinder. The radius of the piston is 10…

A cylindrical container is initially separated by a clamped piston into two comp

A cylindrical container is initially separated by a clamped piston into two compartments of equal volume. The left compartment is filled with one mole of neon gas at a pressure of…

A cylindrical container is sealed with a movable piston and contains 0.200 mol o

A cylindrical container is sealed with a movable piston and contains 0.200 mol of oxygen. The initial volume is 2.3.10-3 m3. and the initial temperature is 77°C. The value of the …

A cylindrical specimen of an alloy (Fig. 1) 10mm in diameter and 100mm long that

A cylindrical specimen of an alloy (Fig. 1) 10mm in diameter and 100mm long that is pulled in tension. A cylindrical specimen of an alloy (Fig. 1) 10mm in diameter and 100mm long …

A cylindrical specimen of an alloy (Fig. 1) 10mm in diameter and 100mm long that

A cylindrical specimen of an alloy (Fig. 1) 10mm in diameter and 100mm long that is pulled in tension. A cylindrical specimen of an alloy (Fig. 1) 10mm in diameter and 100mm long …

A cylindrical tank is being filled with water. The tank is initially empty but t

A cylindrical tank is being filled with water. The tank is initially empty but then water begins to flow into it at a rate of 82 .0O0 kg/min. There is a small hole of radius r = 0…

A cylindrical tungsten filament 13.5 cm long with a diameter of 0.50 mm is to be

A cylindrical tungsten filament 13.5 cm long with a diameter of 0.50 mm is to be used in a machine for which the temperature will range from room temperature (20°C) up to 120°C. I…