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If 5.20 mL of 0.1000 M NaOH solution is needed to just neutralize excess acid after 20.00 mL of 0.1000 M HCl was added to 1.00 g of an antacid, how many moles of acid can the antacid counteract per
What is the hybridization of each carbon for the following structure? Explain each one and provide the line structure. Supposedly there should be two hybridized sp2.
What final temperature, in degrees celcius, is needed to change the volume of the gas to each of the following, if n and P do not change?
Why would you expect the heats of neutralization for HCl and Nacl reaction and a HNO3 and KOH reaction to be the same, within experimental error? What is the net ionic reaction for both acid-base re
Methane (CH4), ammonia (NH3), and water (H2O) all have octets around the central atom. What are the shapes and bond angles of each of these molecules? Explain why they have different bond angles.
Using enthalpies of formation, calculate the quantity of heat produced when 10.0 g of propane is completely combusted in air under standard conditions. Assume that liquid water is forming. Express y
What is the theoretical yield (in grams) of silver if 8.75 g copper are mixed with 0.350 mol AgNO3(aq)? The balanced equation for this reaction is shown below.
The first-order decomposition of SO2Cl2 to sulfur dioxide gas and chlorine gas at 320°C has a half-life of 8.75 hr. If one begins with 600. mmHg of pure SO2Cl2 in a 5.00-L flask at 320°C, ho
It is desired to produce an aqueous solution of pH=8.75 by dissolving one of the following salts in water at 298 k. Which salt would you use and at what molar concentration?
Write the full chemical equation upon the addition of NaOH to each of the 3 alanine species mentioned. If there's no reaction, indicate there's no reaction and why.
Pb accumulates at a rate of 0.03mg m-2 day-1. How many metric tons (1 metric ton=1000kg) of Pb fall on the 535 square kilometers of Chicago in 1 year?
Question: On forming the nuclide from the protons, neutrons and electrons, the mass loss per nucleon for the is 0.00759 amu, whereas that for is 0.00944 amu. This means that:
What is the molar solubility of lead II bromide in 0.5M potassium bromide solution? what is the molar solubility of lead II bromide in 0.5M lead II nitrate solution?
A spacecraft moving away from Earth emits a 4346 Hz signal. A scientist on Earth measures the signal to be 4344 Hz. What is the speed of the spacecraft relative to Earth?
The concentration of the alkane C20H42 (FM 282.55) in a particular sample of rainwater is 0.2 ppb. Assume that the density of rainwater is close to 1.00 g/mL and find the molar concentration of C2
A 15 g rifle bullet traveling 240 m/s buries itself in a 3.9 kg pendulum hanging on a 2.9 m long string, which makes the pendulum swing upward in an arc. Determine the vertical and horizontal compon
A sample of Ringer's solution contains the following concentractions (mEq/L) of cations: Na 147, K 4 and Ca2 4. If CI- is the only anion in the solution, what is the CI- concentration, in milli
A 60 year old person has a threshold of hearing of 75.0 dB for a sound with frequency f = 10,000 Hz. By what factor must the intensity of a sound wave of that frequency, audible to a typical young a
A system of 118.0 moles of an ideal gas in 2.3 m3 has a molar internal energy of U = 25.0 kJ/mol at 1.3 bar. What is the molar enthalpy content of the ideal gas?
A string vibrates in its fundamental mode with a frequency of 380 Hz. The string is 0.73 m long and has a mass of 1.51 g. With what tension in N must the string be stretched?
If someone ate 6259 mL of snow, how much water would they have consumed? How many kJ would be required to bring it to body temperature?
Question: A cylindrical solenoid of radius 3.0 cm is wound with a turn density of 1300 turns/m. It carries a current of 2.0 A. How much energy is stored per meter length of the solenoid?
The other isotope, having mass 46 amu, accounts for the other 83.9%. What should be the experimentally determined atomic weight for this hypothetical element?
A sphere of mass 35kg is attached to one end of a rope. It is found that the rope does an amount W = 550J in pulling the sphere upwards through a distance of 1.5m. Find the tension in the rope.
A generator has a 140-turn square coil, 5 cm on a side. A) Find the peak emf in this coil when it's rotating at 110Hz in Earth's field, B=5e^-5T.