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What is the theoretical yield of H2O that can be obtained from the reaction of 4.5 g H2 and excess O2? 2H2(g) + O2(g) --> 2H2O(g) A - 9.0 g B - 81 g C - 40 g D - 4.5 g E - 80 g Using the arithmetic problem below, determine the correct number of significant figures. (1.5 x 10 -4 x 61.3) + 2.01 = A - 2.0 B - 2.019 C - 2.0192 D - 2.019195 E - 2.02 Rutherford's experiment with alpha particle scattering by gold foil established that:
A) protons are not evenly distributed throughout an atom
B) protons are 1840 times heavier than electrons
C) electrons have a positive charge
D) electrons have a negative charge
E) atoms are made of protons, neutrons, and electrons
F) protons are located in the nucleus of an atom
Question- What precautions must be taken when you introduce a mixture of compounds to be separated onto a liquid chromatography adsorbent column?
Standard Addition Graph: Tooth enamel consists mainly of themineral calcium hydroxyapatite. Trace element in teeth ofarchaeological specimens provide anthropologists with cules aboutdiet and disease of ancient people
Depict a titration curve representing the titration of a StrongAcid, A, by a Weak Base, B. If the pKa for HB=6.85, and the initial concentration of A is 1.0 M, Explain what is the pH at the equivalence point
You place 25 moles of a monomer in a flask. It equilibrates to form a dimer by the following reaction. The molar equilibrium constant is found to be 3.5. monomer ( ) dimer or restated 2A ( )A2, What are the concentrations of the monomer and dimer i..
State the box diagram for Cu(I). Assume whether aqueous solutions of Cu(I) will be paramagnetic or diamagnetic
the specific heat of fat is 0.45 and the density of fat is 0.94 . how much energy in calories is needed to heat 19 of
The electrochemical cell described by the balanced chemical equation has a standard cell potential of -0.94 V. Calculate the Wmax (kJ) the cell has done if 1335.4 g of SO42-(aq) (Molar Mass - 96.07 g/mol) reacts. Round your answer to 3 significant..
a solution is prepared by dissolving 15.0g of nh3 in 250g of water. the density of resulting solution is 0.974gml.
Use MO theory to predict the net bond order after N2 interacts with a photon that results in the promotion of an electron from bonding to an antibonding orbital.
suppose that a coal-fired power plant converts energy from coal into electrical energy with 36 percent efficiency. how
Wind provides a source of renewable energy that is increasingly being tapped. Modern wind tubines can conbert up to 30% of the kinetic energy of the incoming wind blowing through their blades to electicity.
Some materials can be used to measure a background spectrum. What materials are usually used as the background of solid FTIR and what chemical is used as standard of 1H NMR
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