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Which of the following ground state ions is/are diamagnetic?
I. Fe ^2+ II. Zn ^2+ III. Cu ^+1 IV. Ni^2+ V. V^3+
a) I, IV only b) I, III only c) I only d) II, III only e) IV, V only
Elements are always arranged in order of increasing atomic weights. Metallic properties increase going from bottom to top in a family of elements.
predict the ratio of the two masses of oxygen that combine with a fixed mass of lead to form PbO and PbO2? PbO:PbO2 oxygen mass ratio= ?/?
The CO2 output of an astronaut is about 1.3 kg/day. What is the minimum mass of LiOH required for a six-day space shuttle flight involving five astronauts?
a.) Available Electrons (AE) b.) Needed Electrons (NE) c.) Geometry Description d.) Number of sigma bonds e.) bonding description f.) lewis dot structure
Suppose 1500 J of heat energy are put into a sample of liquid water at 25 degrees celsius, and the final temperature of the water is 75 degrees celsius. How many grams of water are present?
Like all lenders, Ricky must report an APR toconsumers. What rate should the shop report? What is the effective annual rate?
which of the following is a neutralization reaction? 2no2 --> 2no-> + 02, h2o+so3-->h2so4, hno3 +koh-->h2o+kno3, 4na+o2 --> 2na2o, kcl+nano3--> kno3 + nacl
Write a balanced equation for the neutralization of each of the following. Express your answer as a chemical equation. Identify all of the phases in your answer
A student ran the following reaction in the laboratory at 689 K H2(g) + I2(g) 2 HI(g)
What volume (V) of 2.20 M NaOH solution must you add in order to prepare an acetate buffer of pH 5.24? (the pKa of acetic acid is 4.76)
A given mass of a real gas in a rigid container is heated from 400 to 1200K. Which of the following responses best describes what will happen to the pressure of the gas
Standard reduction potentials are given on the next page. (a) Draw a diagram of the electrochemical cell, labeling all electrodes and solutions. (b) What is the pH in the Pt | H+ | H2 half-cell (c) What is the value of the equilibrium constant for..
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