Chemistry concepts and calculations

7. Using a calculator calculate the following parameters and fill-in the spaces

7. Using a calculator calculate the following parameters and fill-in the spaces provided. (15 pts) [H] and [OH] a) Calculate [H'] of a solution whose [OH] 2.5 x 10-"M b) Calculate…

7. Using a calculator calculate the following parameters and fill-in the spaces

7. Using a calculator calculate the following parameters and fill-in the spaces provided. (15 pts) [H] and [OH] a) Calculate [H'] of a solution whose [OH] 2.5 x 10-"M b) Calculate…

7. Using the ranges named TechCode, Labor (Cost, a ours, create a SUMIFS formula

7. Using the ranges named TechCode, Labor (Cost, a ours, create a SUMIFS formula in cell J14 to add the labor cost for calls made by technician 3 criteria 1) in which the hours lo…

7. What is meant by thermodynamie standard state? . Calculate the heat absorbed

7. What is meant by thermodynamie standard state? . Calculate the heat absorbed by 500.0 g of nickel when its temperature is -warned from 22.4 C to 58.4 C (at constant pressure). …

7. What is smart grid? How does it benefit you? 8. What is wind turbine and what

7. What is smart grid? How does it benefit you? 8. What is wind turbine and what does it do? Where wind energy is considered as a more reliable energy source in DC or in Texas? ( …

7. What is the Chemical formula of the substances present in cach of the followi

7. What is the Chemical formula of the substances present in cach of the following household chemicals? (write only the formula) a. Baking Soda b. Epsom salts c. Table salts d. Bl…

7. What is the hydrogen ion concentration in solution at a pH 8.3? 8. Describe h

7. What is the hydrogen ion concentration in solution at a pH 8.3? 8. Describe how you would prepare a 0.1 M phosphate buffer with a pH of 7.2. What ratio of conjugate base to aci…

7. What is the hydrogen ion concentration in solution at a pH 8.3? 8. Describe h

7. What is the hydrogen ion concentration in solution at a pH 8.3? 8. Describe how you would prepare a 0.1 M phosphate buffer with a pH of 7.2. What ratio of conjugate base to aci…

7. What is the special \'\'smart\'\' property that a zinc coating on steel has?

7. What is the special ''smart'' property that a zinc coating on steel has? a. becomes thicker over time b. is self - healing if scratched c. becomes thinner over time d. doesn't …

7. What is the term for herizeral properties that from metallic in the periodic

7. What is the term for herizeral properties that from metallic in the periodic table that contains elements with vary group and to family b, group and series c, period and group …

7. What types of noncovalent interactions can occur between the following sets o

7. What types of noncovalent interactions can occur between the following sets of molecules. Just indicate one noncovalent interaction (most important) for each of the sets. a. Be…

7. What types of noncovalent interactions can occur between the following sets o

7. What types of noncovalent interactions can occur between the following sets of molecules. Just indicate one noncovalent interaction (most important) for each of the sets. a. Be…

7. When 137.52 g of pure copper reacts with 387.68g of bromine, 483.38g of a gra

7. When 137.52 g of pure copper reacts with 387.68g of bromine, 483.38g of a gray-black compound containing only copper and bromine result. 41.82g of bromine remain when the react…

7. When 137.52 g of pure copper reacts with 387.68g of bromine, 483.38g of a gra

7. When 137.52 g of pure copper reacts with 387.68g of bromine, 483.38g of a gray-black compound containing only copper and bromine result. 41.82g of bromine remain when the react…

7. When 2.246 grams of a calcium chloride hydrate was heated, 0.728 grams of wat

7. When 2.246 grams of a calcium chloride hydrate was heated, 0.728 grams of water were released. Determine the formula of the hydrate [Hint: take the same approach as for the cop…

7. When a function has an object parameter that it doesn\'t modify, what is the

7. When a function has an object parameter that it doesn't modify, what is the best way to declare the parameter (in the function signature), and why? Show an example using a func…

7. When a liquid is in dynamic equilibrium with its vapor in a closed container:

7. When a liquid is in dynamic equilibrium with its vapor in a closed container: (a) the rate at which molecules from the liquid phase enter the gas phase exactly equals the rate …

7. When sodium chloride dissolves in water, how do the water molecules orient ar

7. When sodium chloride dissolves in water, how do the water molecules orient around the ions? a. The oxygen atoms point toward both the sodium and the chloride. b. Around sodium …

7. Which if the following forms of matter is a pure substance? (A) Soil (B) Tabl

7. Which if the following forms of matter is a pure substance? (A) Soil (B) Table salt (C) Orange juice (D) Concrete 8. Which of the following has the most kinetic energy? (A) one…

7. Which of the following addition polymers results from the reaction below? nCF

7. Which of the following addition polymers results from the reaction below? nCF2-CF2---->(Catalyst) ? A) [ CF-CF ]n B) [CF3-CF3]n C) [-CF2-CH CHCF2-]n D) [-CF2-CF2-]n E) [-CF2…

7. Which of the following aqueous solutions has the lowest vapor pressure? a) 1.

7. Which of the following aqueous solutions has the lowest vapor pressure? a) 1.0m Na2SO4 b) 2.0m glucose(C6H12O6) c) 1.0m (NH4)3PO4 d) 1.5 mCaCl2 e) 2.0 mNaCl 8. Calculate the mo…

7. Which of the following are representations of the same molecule? 8. Which of

7. Which of the following are representations of the same molecule? 8. Which of the following is are constitutional isomers of hexane CH2(CH2)4(CH3)? 9. Of the compounds listed he…

7. Which of the following bonds (circled) vibrates at the highest frequency ? a.

7. Which of the following bonds (circled) vibrates at the highest frequency ? a.1 b. 2 C. 3 d. 4 8. Which of the foIIowing functional groups is likely to be present in a molecule …

7. Which of the following correctly describes the partial pressures of gases in

7. Which of the following correctly describes the partial pressures of gases in the body? A) high O 2, high CO 2, tissue B) low O2, low CO2, deoxygenated blood C) high O 2, lowCO2…

7. Which of the following is a pair of vector quantities? a. SpeedDistance b. Ve

7. Which of the following is a pair of vector quantities? a. SpeedDistance b. Velocity Distance c. Velocity -Displacement d. SpeedDisplacement What is the resultant of two displac…

7. Which of the following statements is FALSE? When K>>1, the forward reaction i

7. Which of the following statements is FALSE? When K>>1, the forward reaction is favored and essentially goes to completion. b. a. When K1 implies that the reaction is very…

7. Which of these has the strongest dispersion (Londoll) a. Brz b. Clh C. 12 d.

7. Which of these has the strongest dispersion (Londoll) a. Brz b. Clh C. 12 d. F2 8. What is the oxidation number of P in the POs3 anion? a. +3 b. +5 9. How many atoms are in 1.0…

7. Which statement about insulin secretion is CORRECT Insulin release involves t

7. Which statement about insulin secretion is CORRECT Insulin release involves the export of calcium from the cytosol into the extracellular environment a. b. AGoes uptake, glucos…

7. Write down the product. a) CH3CO2CH3 CH3OH b) CH3CO2CH2CH3 CH3CH2COOH c) C d)

7. Write down the product. a) CH3CO2CH3 CH3OH b) CH3CO2CH2CH3 CH3CH2COOH c) C d) CH3 COCH3 c) CH yCOCH2CH3 8. Write down the product. a) CH3CH2CONH 1. CH3NH2 b) CH,CH,COOCH3 c) CH…

7. Write out a balanced combustion reaction for methane (CH 4 ). Given that H rx

7. Write out a balanced combustion reaction for methane (CH4). Given that Hrxn for this reaction is -890 kJ/mol, what is Hrxn for the reaction of 0.5 mol CO2 with sufficient water…

7. You Want to purify 10 grams of benzoic acid that has been contaminated with 0

7. You Want to purify 10 grams of benzoic acid that has been contaminated with 0.2 g of salicylic acid. You have found the following data by looking the Merck Index: a) What volum…

7. You are given 1000 equal sized gem stones with a total mass of exactly 3 g. T

7. You are given 1000 equal sized gem stones with a total mass of exactly 3 g. These gems are valued at $1000 per oz. (Note: 1.00 oz = 28.35 g) Answer the following using unit – f…

7. You set up a voltaic cell: Sn(s) | Sn2+ (a)Fe (aq) , Fe (aq) Pt(s) Each half-

7. You set up a voltaic cell: Sn(s) | Sn2+ (a)Fe (aq) , Fe (aq) Pt(s) Each half-cell contains 1.00 L of solution containing the appropriate aqueous speci concentrations. es in 1.0…

7. You wish to determine the molecular weight of an unknown biomolecule. It is s

7. You wish to determine the molecular weight of an unknown biomolecule. It is slightly soluble in hexane; you are able to dissolve 10.0 mg in 100 mL of hexane. a) If your osmomet…

7. Your brain is walled off from the rest of your body by a large \"fat\" layer

7. Your brain is walled off from the rest of your body by a large "fat" layer (a fat layer is hydrophobic). This fat layer evolved in order to protect the brain; it hinders the tr…

7. Zwitterions are: A) amino acids B) ionic molecules that are racemic C) molecu

7. Zwitterions are: A) amino acids B) ionic molecules that are racemic C) molecules that bear both negatively and positively charged groups D) side chain carboxylate anions E) del…

7. Zwitterions are: A) amino acids B) ionic molecules that are racemic C) molecu

7. Zwitterions are: A) amino acids B) ionic molecules that are racemic C) molecules that bear both negatively and positively charged groups D) side chain carboxylate anions E) del…

7. \"Gasohol\" a mixture of gasoline and ethanol, C,H,OH, is used as automobile

7. "Gasohol" a mixture of gasoline and ethanol, C,H,OH, is used as automobile fuel. The alcohol releases energy in a combustion reaction with O2- C2H5OH() 302(g) + 2CO2(g) + 3H20(…

7. ___ Arranges a list of files into sections, with each individual file shown.

7. ___ Arranges a list of files into sections, with each individual file shown. A. sorting B. grouping C. filtering D. stacking 8. ____ Shows only the files matching one or more s…

7. a) Classify the following bonds as ionic, polar covalent, or nonpolar qualita

7. a) Classify the following bonds as ionic, polar covalent, or nonpolar qualitatively based solely on each element's position on the periodic table. S-S Na-N O-I S-Cl Cu-Cl b) Cl…

7. a) NaHCOs is a weak acid, a weak base, a sticong acid, a strong base (CHOOSE

7. a) NaHCOs is a weak acid, a weak base, a sticong acid, a strong base (CHOOSE ONE) b) The halogen displacement reaction Ch 2 KI2 KCI will happen, will not happen (CHOOSE ONE Not…

7. briefly describe the two alcohol fermentation reactions of pyruvate. Identify

7. briefly describe the two alcohol fermentation reactions of pyruvate. Identify the enzymes and any co-factors used in the reactions c. What is the overall net of ATP from glycol…

7. hat is the molar mass of a gas a. 16.0 g/mol that has a density of2.e2 Lat 20

7. hat is the molar mass of a gas a. 16.0 g/mol that has a density of2.e2 Lat 200 atm and 25.o c? d. 32.0 g/mol b. 28.0 g/mol c. 2.69 g/mol e. 64.0 g/mol 8. Metallic copper can be…

7. ldenity the strongest intermolecuarforcepresent n each pure sudstance and ine

7. ldenity the strongest intermolecuarforcepresent n each pure sudstance and ineach miature and weite your answer in the table below: LiNO3 NHs CH4 CH3OH HCI 8. Determine the sign…

7. up the stopcock water the red arms 250mL temperature flask vertically), heat

7. up the stopcock water the red arms 250mL temperature flask vertically), heat the under bath one inch the the until water with flask. the water not bath to of ring. about the le…

7.(3 pts) Fill n the table for the following three electron transitions: Electro

7.(3 pts) Fill n the table for the following three electron transitions: Electron ransition Indicate with an "X Shortest Wavelength Longest Wavelength Are Photons: Visible (vis) U…

7.) When the following equation is balanced properly under basic conditions, wha

7.) When the following equation is balanced properly under basic conditions, what are the coefficients of the species shown? S2- + Ag2O = S + Ag Water appears in the balanced equa…

7.) When the following equation is balanced properly under basic conditions, wha

7.) When the following equation is balanced properly under basic conditions, what are the coefficients of the species shown? S2- + Ag2O = S + Ag Water appears in the balanced equa…

7.) a.) The pentachlorocuprate anion in [Cr(en)3][CuCl5] can exist in either tri

7.) a.) The pentachlorocuprate anion in [Cr(en)3][CuCl5] can exist in either trigonal bipyramidal or square pyramidal geometries. What are the oxidation states for the Cr and Cu i…

7.) while the object is continuously oscillating, the student determines the max

7.) while the object is continuously oscillating, the student determines the maximum speed of the object during two oscillations. The first speed is 3.5 m/s and the second speed i…