Sketch a reaction between five O2 molecules and five C atoms that follows the law of conservation of mass. What does the law of conservation of mass state?
Sketch a reaction between five O2 molecules and five C atoms that follows the law of...
A) Write out the Law of Conservation of mass. B) Are atoms conserved in a chemical reaction ? Explain C) Is mass conserved in a chemical Reaction? Explain D) Are the number of moles conserved in a chemical reaction? Exp from A-D
Ozone decomposes to form oxygen molecules and oxygen atoms, O3(g) ? O2(g) + O(g), in the upper atmosphere. The energy of activation for this reaction is 93.1 kJ/mol. At 600 K, the rate constant for this reaction is 3.37
Problems 3. The diagram labeled “Before Reaction" depicts a mixture of S and O2 (molecules in a closed container a. Draw a diagram that depicts the results after the mixture reacts as completely as possible according to the equation: 2S + 302 → 2803. Note that matter should be conserved – there should be the same number of sulfur atoms (squares) and oxygen atoms (circles) present after the reaction as there was before. Before Reaction After Reaction b. From the...
E. electrons are shared between two atoms. 49. Molecules that form when electrons are shared unequally between atoms are called A. salt molecules. B. polar molecules. C. nonpolar molecules. D. lopsided molecules. 50. An atom has an atomic number of 19 and a mass number of 39. This atom will have A. 19 neutrons. B. 20 neutrons. C. 39 neutrons. D. 58 neutrons. E. 20 electrons.
Predict the largest intermolecular force between the two molecules (or atoms) in each of the following cases:(Choose between: Ion-Dipole, Dipole-Dipole, H Bond, Ion-Induced Dipole, Dipole-Induced Dipole, or Dispersion Forces) a) (CH3)2CO - (CH3)2CO (two molecules of acetone) b) H2 - Ne c) H2O - H2 d) H2O - (CH3)2CO e) HF - CH4 f) HF - (CH3)2CO g) O2 - CH4 h) CH3OH - CH3CH2OH
How many atoms of copper (Cu) are contained in 1.75 moles of copper atoms? How many moles of aluminum ions (Al 3+) are present in 7.25 x 1025 Al 3+ ions? How many moles of aspirin contain 8.62 x 10 28 molecules? How many sugar molecules are contained in 0.475 mole of sugar? What is the molar mass of nicotine (C10H14N2), the toxic and addictive stimulant in tobacco? In this balanced chemical equation, 2 C18H30O2 + 49O2 à 36 CO2...
I need help with question 41. (e) magnetic intensity 38. Acconding to Coulomb's Law, the fonce of interaction between 2 charged paerticles is innversely proportional to the square of their separation IBty what factor does the torce between two charges chanes i their sepwration is decreased by a factor of 3 current x resistance. This means that as the voltage across a wire is increased, the current produced in the wire (b) Increases (d) none of the above (a) Decreases...
solid state physics 1. Consider a 1-dimensional chain of atoms with mass m. The force constant between atoms are alternately C and 10C. The distances between the nearest neighbors are a/2. Let u, and v, be the displacements of the s-th pair of atoms as shown in the figure below. lu lu Us lu s-1 s-1 s+1 s+1 10C 100 10C (a) Write down the equations of motion for u, and v,. [5] (b) Look for solutions in the form...
Write the isotope symbol for each of the following isotopes: (3 mks) Carbon atom containing 6 neutrons Nitrogen atom containing 8 neutrons Uranium atom containing 143 neutrons Write the isotope symbols for the following: (3 mks) Atom containing 26 protons and 28 neutrons Atom containing 14 protons and 15 neutrons Atom containing 16 protons and 18 neutrons Determine the number of protons, neutrons, and electrons in each of the following isotopes: (5 mks) Krypton-84 Tin-117 Zinc-66 Ba-136 Ne-22 Explain how...
1. The rate of the reaction (8) + NO2(g) → NO(g) + O2(g) was studied at a certain temperature. (a) In the first set of experiments, NO2 was in large excess, at a concentration of 1.0 x 10'3 molecules/cm with the following data collected: Time (s) [O] (atoms/cm) O 5.0 x 10' 1.0 x 102 1.9 x 10° 2.0 x 102 6.8 x 108 3.0 x 10-2 2.5 x 108 What is the order of the reaction with respect to...