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In some industrial processes, sulfite is added to remove dissolved O2 to prevent corrosion of pipes. Write the balanced overall chemical reaction for reduction of dissolved O2 by sulfite (SO32-).
An organ pipe is shown to resonate at 240 Hz, 320 Hz, and 400 Hz. It does not resonate at any other frequencies between 240 Hz and 400 Hz, How long is the organ pipe
Draw the structure(s) of all carbocations that could potentially form from the alkene and label each carbocation as primary, secondary or tertiary. 2-methylpropene
A ball of mass (m) 0.5 kg is attached to the end of a string having length (L) 0.5 m. The maximum possible value of angular velocity of ball is
What is the buffer strength (ie the total of Ha and A). The concentration of weak base in the buffer on 0.126 M The concentration of weak acid in the buffer is 0.04906
A police car with a siren of frequency 8 kHz is moving with uniform velocity 36 km/hr towards a tall building which reflects the sound waves. The frequency of the siren heard by the car driver is
What is the pressure of dry H2 in mmHg. In atm. d. Assuiming ideal gas behavior, how many moles of H2 has were collected.
The human eye can detect light intensities as small as about 8 10-23 W/m2. How does this force compare to the weight of an electron
a sloenoid 3.0 cm long consists of 8013 loops of wire if the magnetic field inside the solenoid is 3.0 T, what is the magnitude of the current that flows through it
A current of 0.600 A is passed through a cell for 5min and 30 s. How much charge (in C) was trasferred? How many electrons were transfered
The primary coil of a transformer has 100 turns and its secondary coil has 400 turns. If theac voltage applied to the primary coil is 120V
Why does surface complex formation with a weak acid lead to a relative maximum in the extent of surface complex formation (adsorption) at a pH which is usually near the value of -log acidity constan
A long straight wire carrries a current I1 of 15 A. A rectangular coil with two sides parallel to the straight wire has sides 5 cm, what is the net force of the coil
A square wire carrying a current of 5 A has sides of 10 cm and is placed in the yz plane. The torque on the square is
Consider the following system in equillibrium CaCO3(s) = CaO(s) + CO2(g) How many phases are present. Explain.
A coild of wire, initially carrying no current, has a current of 10 A established in .4 seconds. What is the total magnetic flux through the coil when the current is 10 A
Which ground-state atom has an electron configuration described by the following orbital diagram? A antimony B germanium C indium D lead E tin
An alpha particle ( a doubly ionized helium atom with a mass of 6.64 x 10^-27 kg) is traveling with a velocity v=1x10^6 m/s j, What direction is the magnetic field above
A coil of wire, initially carrying no current, has a current of 10 A established in .4 seconds. Determine the self-inductance of the coil
What is the partial pressure of oxygen gas in an oxygen and neon gas mixture at 1.280 atm. The gas mixture contains 15.00 g of oxygen and 15.00 g of neon
A cyclotron for accelerating deutrons (A deuteron has one proton and one neutron ) has a magnetic field of .5 T and a radius of 1 m. What is the energy of the deuteron
A 54.9 g sample of the compound X2O7 contains 33.6 g of oxygen atoms. What is the molar mass of element X
A cyclotron for acceleration deuterons ( A Deuteron has one proton and one neutron) has a magnetic field of .5 T and a radius of 1 m, the frequency of the cyclotron is
Consider a sample that consists of three green spheres and one blue sphere. The green mass is 2.00 g, and the blue mass is 3.00 g. Calculate the fractional abundance of each sphere in the sample.
An object 3.4 mm tall is placed 25cm from the vertex of of a convex spherical mirror. how far is the image from the vertex of the mirror