Zinc is reacted with lead nitrate. Balance equation and write net ionic equation.
Please show how to solve the following problem: Repeat Millikan's oil drop experiment using a unit of your own devising (B) rather than the unit of Coulombs. You measure the charges on 4 different drops labeled a, b,c, d. You determine that drop a has charge 13.52 B, drop b has charge 3.359 B, drop c has charge 10.21 B, and
The major mineral ingredient in face or body powder is?
3. A material has an effectively full valence band and an empty conduction band. Explain why that if these two bands overlap the material behaves as a metal and if they are separated by a few electron volts in energy the material is an insulator. 4. Calculate the minimum energy a photon must have to produce an electron hole p
Which of the following species would you expect to be paramagnetic? Briefly explain the answers using molecular orbital energy level diagrams or molecular orbital electron configurations. N2, N2-, N2+, O2, N2^2- O2+, O2-, O2^2-
What is the coefficient of water when the attached equation is balanced?
How many atoms of C are in 1 mole of Carbon?
Complete the chart by filling in the correct ionic formulas. Cl- OH- O2- SO42- CO32- PO43- Na+ NH4+ K+ Ba2+ Ca2+ Mg2+ Fe2+ Cu2+ Al3+ Fe3+
How long would it take for a radioactive isotope with a half life of 2 weeks to lose at least 70% of its radioactivity? Describe two clinical uses of Radioactivity.
An open-end manometer containing mercury is connected to a container of gas. The mercury in the arm attached to the gas is 13.6cm higher than the one open to the atmosphere. The atmospheric pressure is 1.05atm I have to find the pressure of the enclosed gas in torr.
Use simple MO Theory (LCAO-MO) to explain why the dissociation energy of neutral N2 is greater than the N2+ ion, but that the dissociation energy of the O2+ ion is greater than the O2 neutral.
Express normal body temperature, 98.6 degF, in degC and K.
A saturated solution of Na2SO4 with excess of the solid is present in equilibrium with its vapor in a closed vessel. Calculate the number of degrees of freedom, f, of the system. Ignore the autoprotolysis of water and assume that the salt solvates without ionizing. F = c - p +2 or use f = c-p +2 -r -a c = chem species
Lead II nitrate + lithium chloride = lead II chloride + lithium nitrate
A steel tank with a volume of 9.583 L contains N2 gas under a pressure of 4.972 atm at 31.8 °C. Calculate the number of moles of N2 in the tank.
What is the coefficient of O2? _Al+_O2-> Al2O3
When the following equation is balanced, the coefficients of BaO2 is? _BaO2-> BaO+ _O2
I need some help finding the volume of the hydrogen generated if the temperature at the depth of the Titanic is -1 degrees Celsius.
(See attached file for full problem description) --- I need full explanation of each step. Please help. 1. The helium ion, He+, has energy levels similar to those of the hydrogen atom, since both species have only one electron. The energy levels of the He+ ion are given by the equation En = - 5248.16 kj/mole n =
A chemist isolates 17.43 g of product from a reaction that has a calculated theoretical yield of 21.34 g. What is the percentage yield?
What volume of 0.125 M KOH is required to prepare 750 ml of 0.06500 M KOH?
Is Rb2S, Li2Cr2O7, Cu(ClO4)2 insoluble or soluble and why?
KOH Is this soluble or insoluble in water? What rules of solubility makes this so?
What volume (L) of 0.750 M NH3 solution would you use to prepare 0.500L of 0.250M NH3 solution?
Question 1: M. tuberculosis, the organism that causes tuberculosis, can be completely destroyed by irradiation with UV light with a wavelength of 254 nm. What is the frequency? Question 2: Aradio station's signal broadcasts at a freq. 1240kHZ. What is the wavelength in meters?
A) What is an oxygenate? b) Name one octane enhancer
Give the name and chemical symbol for: a) An element with 50 electrons b) An element with 28 protons c) An element with 2 electrons in the first shell, 8 electrons in the second shell, 8 electrons in the third shell, and 2 electrons in the fourth shell d) An element with atomic number of 78
While you are working in the lab your instructor hands you a vial of red, crystalline material and asks you to tell if it has ionic or covalent bonding. Describe at least one experiment you would do to answer the instructor's question.
Tell whether the following is a property of a compound or a mixture: a) Can contain three elements in a specific ratio b) Varies in chemical composition depending on the sample size c) Can be classified as either homogeneous or heterogeneous
Tell if the mixture is homogeneous or heterogeneous and explain why you classified it as homogeneous or heterogeneous. a) Iced tea b) Salad c) Chocolate chip cookie