Chemistry concepts and calculations

4. The radioactive nuclide 100Tc decays to form the stable nuclide 100Mo. a) The

4. The radioactive nuclide 100Tc decays to form the stable nuclide 100Mo. a) There are two possible pathways for this decay. Write a balanced equation for each. b) Only one of the…

4. The rate of formation of C was measured in trials with varying concentrations

4. The rate of formation of C was measured in trials with varying concentrations of reactants A and B. Date Data was taken at 25°C. All rates given are initial rates. Trial LAL (M…

4. The rate with which enzymes can transform a substrate varies from enzyme to e

4. The rate with which enzymes can transform a substrate varies from enzyme to enzyme, and sometimes substrate to substrate. a) How are competitive and uncompetitive reversible in…

4. The reaction O2(g) N2(g) 2NO(g) was prepared with the following initial conce

4. The reaction O2(g) N2(g) 2NO(g) was prepared with the following initial concentrations: [O2 0.01 M [N2] 0.01 M and [NO) a 0 M. At equilibrium, [NO] was measured and found to 0.…

4. The reaction coordinate in the picture below shows two alternate paths for th

4. The reaction coordinate in the picture below shows two alternate paths for the reaction H2O(l) + CO(g)H2(g) + CO2(g) HOMOGENEOUS WGS (64.3 63.1 11.5 F5 39.7 12.1 61.7) (24.2) H…

4. The reaction coordinate in the picture below shows two alternate paths for th

4. The reaction coordinate in the picture below shows two alternate paths for the reaction H2O(l) + CO(g)H2(g) + CO2(g) HOMOGENEOUS WGS (64.3 63.1 11.5 F5 39.7 12.1 61.7) (24.2) H…

4. The reading on a Kelvin scale Is 274 degrees C. On the Celsius scale the read

4. The reading on a Kelvin scale Is 274 degrees C. On the Celsius scale the reading would be what? 5. The denser a liquid is, the easier it is for an object to float on it. If a s…

4. The solubility of sugar in water is about 1.8 g/mL at room temperature. If yo

4. The solubility of sugar in water is about 1.8 g/mL at room temperature. If you had a cup of coffee (250 mL) and added 50 packets of sugar to it, would you expect all of the sug…

4. The vapor pressure of ethanol is 100 torr at 34.9 °C. What is the vapo deltaH

4. The vapor pressure of ethanol is 100 torr at 34.9 °C. What is the vapo deltaH..= 39.3 kJ/mol anol is 100 torr at 34,9 °C. What is the vapor pressure at 59.6°C? | a. 256.4 b. 15…

4. The vapor pressure of ethanol is 100 torr at 34.9 °C. What is the vapo deltaH

4. The vapor pressure of ethanol is 100 torr at 34.9 °C. What is the vapo deltaH..= 39.3 kJ/mol anol is 100 torr at 34,9 °C. What is the vapor pressure at 59.6°C? | a. 256.4 b. 15…

4. The volume of a sample of gas at 23°C and 1.2atm is V. Calculate its volume i

4. The volume of a sample of gas at 23°C and 1.2atm is V. Calculate its volume in terms of V at 90°C and 1.10atm. 5. The pressure if a sample of gas when its volume is 1.20 L. Wha…

4. The water potential in a curved droplet of pure water is given by: 20 FH20 is

4. The water potential in a curved droplet of pure water is given by: 20 FH20 is some positive constant, and, is the where H20 is the chemical potential in a flat volume ofwater, …

4. Thermal Activation (Chapter 1. Problem 19, modified). A certain chemical oxid

4. Thermal Activation (Chapter 1. Problem 19, modified). A certain chemical oxidation process (e.g., SiO2) has an activation energy of 2 eV atom has an activation energy of 2 eV a…

4. Thermodynamic data for C (graphite) and C( diamond ) at 298 K is given in the

4. Thermodynamic data for C(graphite) and C(diamond) at 298 K is given in the table below. 2.377 a) Calculate delta Ho and delta So and delta Go for the transformation of 1 mole o…

4. Thin Lens A 1.00-cm-high object is placed 4.00 cm to the left of a converging

4. Thin Lens A 1.00-cm-high object is placed 4.00 cm to the left of a converging lens of focal length 8.00 cm. A diverging lens of focal length -16.00 cm is 6.00 cm to the right o…

4. This is a common test question -- it\'s highly likely that you will see one l

4. This is a common test question -- it's highly likely that you will see one like it on the final. In the box below each pair of molecules, write the letter(s) for each label fro…

4. To find the Ce4+ content of a solid, 4.37 g were dissolved and treated with e

4. To find the Ce4+ content of a solid, 4.37 g were dissolved and treated with excess iodate to precipitate Ce(IO3)4. The precipitate was collected, washed well, dried, and ignite…

4. To find the Ce4+ content of a solid, 4.37 g were dissolved and treated with e

4. To find the Ce4+ content of a solid, 4.37 g were dissolved and treated with excess iodate to precipitate Ce(IO3)4. The precipitate was collected, washed well, dried, and ignite…

4. Two metal spheres are identi- cal. They are electrically neutral and are touc

4. Two metal spheres are identi- cal. They are electrically neutral and are touching. An electrically charged ebonite rod is then brought near the spheres without touching them, a…

4. Two samples of sodium chloride were decomposed into their constituent element

4. Two samples of sodium chloride were decomposed into their constituent elements. One sample produced 2.10 g of sodium, and 3.23 g of chlorine. Which of the following could be th…

4. Type of chemical reaction 4. Type of reaction Chemical Reactions and -. MgC12

4. Type of chemical reaction 4. Type of reaction Chemical Reactions and -. MgC12(aq) +-H2(g) 4. Type of chemical reaction: Zn Cu Mg D. Reactions of Ionic Compounds DI Reaction of …

4. Under normal metabolic conditions, the concentration of hydrogen ions, [H+],

4. Under normal metabolic conditions, the concentration of hydrogen ions, [H+], in blood is 4x10-8 M, a. What is the pH of human blood under normal metabolic conditions? Show your…

4. Use excel to solve the Peng-Robinson Eos and find the liquid and vapor specif

4. Use excel to solve the Peng-Robinson Eos and find the liquid and vapor specific volumes of saturated n-butane at -40 oc, 10 oc, and 60 oc. The following are useful properties o…

4. Use the E data to answer the following questions. (14) 0.00V -044V 080V Fe2+

4. Use the E data to answer the following questions. (14) 0.00V -044V 080V Fe2+ +2 e. Fe Fe+ would Ag react with H. togive Hir__ which species is the weakest oxidang agent? Would …

4. Use the Nernst equation to calculate the cell voltage (E) for the following r

4. Use the Nernst equation to calculate the cell voltage (E) for the following redox reaction: a. Fe3+ (aq) + Cu (s) Cu2+ (aq) + Fe2+ (aq) 3+ 0.05 andCu2+ 0.125M at 25°C, and . I,…

4. Using the Rydberg formula, calculate the initial energy level when an electro

4. Using the Rydberg formula, calculate the initial energy level when an electron in a hydrogen atom 2 and emits a photon at 410.1 nm. Note: the Rydberg constant 1.097 x 107 m Ans…

4. Using the data in the table below, explain the structural bases for the diffe

4. Using the data in the table below, explain the structural bases for the differences in boiling points or solubilities as asked for compounds the following sets of Compound Boil…

4. Using the total electrochemical reaction for a lead-acid battery and the tabl

4. Using the total electrochemical reaction for a lead-acid battery and the table of standard reduction potentials Pb(s) + PbO2 (s) +4H+ (ag) + 2 SOA (ag) 2 PbSO4 (s) + 2 H2O (l) …

4. Uxygen used in nospitais and laboratories is often obtained irom cyinders con

4. Uxygen used in nospitais and laboratories is often obtained irom cyinders containing liquetiea oxygen. ii a cyiinder contains 2SUXIU Kg of liquid oxygen, now many lsters of oxy…

4. Warfarin (C19H16O4, 308.34 g/mol) converted to CHI3. One mole of CHI3 was pro

4. Warfarin (C19H16O4, 308.34 g/mol) converted to CHI3. One mole of CHI3 was produced for each mole of warfarin that reacted. The collected CHI3 was reacted with silver to precipi…

4. We separated Carvone and limonene from spearmint oil, by micro column chromat

4. We separated Carvone and limonene from spearmint oil, by micro column chromatography with silica gel and an eluotropic series of hexanes and acetone. If you start adding hexane…

4. We separated Carvone and limonene from spearmint oil, by micro column chromat

4. We separated Carvone and limonene from spearmint oil, by micro column chromatography with silica gel and an eluotropic series of hexanes and acetone. If you start adding hexane…

4. What Grignard reagent is needed to convert 2-pentanone to 3-methyl-3-hexano A

4. What Grignard reagent is needed to convert 2-pentanone to 3-methyl-3-hexano A) butylmagnesium bromide B) methylmagnesium bromide C) propylmagnesium bromide D) ethylmagnesium br…

4. What are the possible sources of error in the wavelength of the sodium line y

4. What are the possible sources of error in the wavelength of the sodium line you calculated in s indicated earlier, white light contains a continuous spectrum including all the …

4. What are three ways that magmas commonly form? As magma cools, what tends to

4. What are three ways that magmas commonly form? As magma cools, what tends to happen to the minerals that crystallize first? As magma cools, what happens to the chemistry/minera…

4. What do you need to calculate pH of this solution? In what circumstances diss

4. What do you need to calculate pH of this solution? In what circumstances dissociation will affect [CO2(aq)] and [H2CO3] and in what circumstances it will not? 5. What will happ…

4. What is the answer to these chemistry bonding questions? a. In phosphorus tri

4. What is the answer to these chemistry bonding questions? a. In phosphorus trichloride, PCl3, the total number of groups on the central atom is ___________. (1,2,3,4) b. In phos…

4. What is the degree of unsaturation of the following molecule? a) 3 b)4 c)5 d)

4. What is the degree of unsaturation of the following molecule? a) 3 b)4 c)5 d)6 e) 7 CH3 5. What kind of orientation does the transition state have in the bimolecular eliminatio…

4. What is the density of UF6 at 100°C and 1 atm? It is a very dense gas. 5. Ele

4. What is the density of UF6 at 100°C and 1 atm? It is a very dense gas. 5. Elemental sulfur can be recovered from gaseous hydrogen sulfide through the reaction: 2 H2S (g) + SO2 …

4. What is the electron domain geometry and ideal bond angle for a molecule that

4. What is the electron domain geometry and ideal bond angle for a molecule that has 2 electron domains around the central atom? a.trigonal planar, 120° b.trigonal planar, 180° C.…

4. What mass of bromine (Br 2 ) is produced whenflourine reacts with 1.72 g of p

4. What mass of bromine (Br2) is produced whenflourine reacts with 1.72 g of potassium bromide? 6. What mass of sodium chloride is produced when chlorinereacts with 0.29 g of sodi…

4. What occurs to covalent bonds when a specific amount (quantized) of infrared

4. What occurs to covalent bonds when a specific amount (quantized) of infrared radiation is absorbed? a. It warms up . It flies around c. It spins faster d.It vibeates faster e. …

4. What other solvent besides diethyl ether is commonly used in Grignard reactio

4. What other solvent besides diethyl ether is commonly used in Grignard reactions? Why is diethyl ether an excellent solvent for carrying out Grignard reactions? Explain clearly.…

4. What will be the effect on the enthalpy change determined if the true concent

4. What will be the effect on the enthalpy change determined if the true concentration of the NaOH was 5% lower than that stated on the label. (2 pts) a. b. HCl were 596 Higher th…

4. When Iodobenzene (b.p. 188.5 0C) codistils with water at 760 torr, the boilin

4. When Iodobenzene (b.p. 188.5 0C) codistils with water at 760 torr, the boiling point of the mixture is 98.5 0C. Calculate the weight of water needed to codistill 1.0 g idobenze…

4. When Mendeleev\'s periodic table was published, scientists had already determ

4. When Mendeleev's periodic table was published, scientists had already determined atomic mass of some of the elements, without knowing exacts about atomic structure. (a) Using a…

4. When Mendeleev\'s periodic table was published, scientists had already determ

4. When Mendeleev's periodic table was published, scientists had already determined atomic mass of some of the elements, without knowing exacts about atomic structure. (a) Using a…

4. When heated, 1,2-dibromoalkanes can undergo reactions like the one shown belo

4. When heated, 1,2-dibromoalkanes can undergo reactions like the one shown below. a.What term describes the stereochemical relationship between reactant and product in the reacti…

4. When the following reaction occurs, the step of the currently accepted mechan

4. When the following reaction occurs, the step of the currently accepted mechanism is probably (a) step 1. (c) step 3. (b) Step 2. (d) Step 4. 1. In the most stable chair conform…

4. Which of the following acids are \"strong\" electrolytes and which are \"weak

4. Which of the following acids are "strong" electrolytes and which are "weak" electrolytes? Circle the strong electrolytes and underline the weak electrolytes. 5. If 26.25-mL of …