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In all parts: assume the the speed of sound in air is 339 m/s. Suppose a ship's foghorn is sounded toward an iceberg, and an echo is heard 4.33 s later. What is the distance from the ship to the iceberg? Suppose the lab floor is 3.12 m beneath the motion detector. If the detector produces a click, how long would it take before the echo returned?
A student titrated 20.0 mL of 0.410M HCL with 0.320M NaOH. Find the pH, [H3O+], and [OH-] when 21.50mL of titrant has been added.
What is the new pressure, in atm,when the air is placed in tanks that have the following volumes, if there is no change in temperature and amount of gas?
Which of the following bond moments would cancel the lone pair moment? S=O S-F N-H another lone pair Consider the molecules F2, OF2, PF3, CF4, and BF3. Which molecules have a dipole moment?
If 32mL of 7.0M H2SO4 was spilled, what is the minimum mass of NaHCO3 that must be added to the spill to neutralize the acid?
What is the molar solubility of Mns, in grams per liter, in a buffer solution that is 0.110 M HC2H3O2 -0.505 M NaC2H3O2? For Mns
for a certain change, the value of change in U is -2.37kJ. during the change the system absorbs 650 joules. how much work did the system do?
What pH would you make the water layer in order to cause the acid to dissolve in the ether layer and the amine to dissolve in the water layer? d. How would you purify a mixture of benzoic acid, chlorobenzene, and cyclohexylamine?
what quantity of heat is required to vaporize 107g of benzene, c6h6, at its boiling point, 80.1c? the heat of vaporization is +30.8kj/mol.
Sketch a voltaic cell represented by the line notation below. Write the overall balanced redox reaction equation and calculate Eocell Mn(s) | Mn2+(aq) || ClO2-(aq) | ClO2(g)
Use the systematic treatment of equilibrium to determine the pH and concentrations of species in 1.00 L of solution containing 0.070 mol lysine (HL), 0.055 mol aspartic acid (H2A), and 0.0080 mol NaOH. Consider just acid-base chemistry.
What is the pressure in atmospheres inside a container of gas connected to a mercury-filled open-end manometer when the level in the arm connected to the container is 21.2cm higher than the level in the arm open
What is the pE value in an acid mine water sample having [Fe3+] = 6.79E-3 M and [Fe2+] = 4.14E-4 M?
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