Chemistry

Classify each of the following by the type of solid(molecular, ionic, metallic, covalent network)it will form: a) Na b) CaCl2 c) C d) SCl2 E) KF The result that I got are : a) Na (molecular solid) b) Fe (metalic solid) c) SiO2 (ionic solid) d) H2O (ionoc solid) E) KF (covalent network)I think you […]

1. Draw the product of the following reaction2. Draw the products of the complete hydrolysis of a ketal. Draw all products of the reaction.3. Draw the structures of organic compounds A and B. Omit all byproducts. Related: [SOLVED] The following data were collected from the gravimetric analysis of a hydrated salt. Trial 1Trial 2Trial 3 Mass of crucible […]

The following data were collected from the gravimetric analysis of a hydrated salt.Trial 1Trial 2Trial 3Mass of crucible and lid (g)19.43720..68718.431Mass of crucible, lid, and hydrated salt (g)21.62625.11122.167Mass of crucible, lid, and anhydrous salt (g)21.44124.70221.762Complete the following table. See Appendix B for determining the standard deviation and relative standard deviation for a set of data. […]

Tag: which equation represents a single replacement reaction Which equation represents a single replacement reaction? A) 2H_2O_2 rightarrow 2H_2O + O_2 B) 2H_2 + O_2 rightarrow 2H_2O C) H_2SO_4 + Mg rightarrow H_2 + MgSO_4 D) HCl + KOH rightarrow KCl + H_2O In which type of chemical reaction do two or more reactants combine […]

Assign the formal charge and oxidation state to the butoxide oxygen. What is the formal charge of oxygen? What is the oxidation state of oxygen? Expert Answer Answer

NH4)2S(aq)+BaCl2(aq)→ Express your answer as a chemical equation. Enter NOREACTION if no reaction occurs. Identify all of the phases in your answer. Tag: (nh4)2s(aq)+bacl2(aq)→ Expert Answer Answer (NH4)2SO4(aq) + BaCl2(aq) = BaSO4(s) + 2NH4Cl(aq) reaction will take place aq means aqueous phase s means solid phase Tag: (nh4)2s(aq)+bacl2(aq)→

What evidence of a chemical reaction might you see in the following cases? bleaching a match. b. dropping an Alka – seltzer tablet into a glass of water Related: bleaching Expert Answer Answer Tag: what evidence of a chemical reaction might you see in the following cases

If a neutral solution of water, with pH = 7.00, is cooled to 10oC, the pH rises to 7.27. Which of the following three statements is correct for the cooled water: (i) [H+] > [OH–], (ii) [H+] = [OH–], or (iii) [H+] < [OH–]? 2) Calculate the pH of a 0.075 M solution of ethylamine […]

Discussion Question 1 What is lactated dehydrogenase, and how is it used in the reduction of carbonyl groups? Explain the manner in which the isoenzymes of LDH can be used as diagnostic tools. Choose one other diagnostic test not using LDH isoenzymes that might be used for the same application and explain what advantages and disadvantages exist over using LDH isoenzymes.  Discussion Question 2 Explain how neurotransmitters work. Distinguish between neurotransmitters and hormones, and discuss one example of each found in the human body, describing how each works.

CHE 205 HOME ASSIGNMNET ON CHPATER 5 POINTS 3• SHOW ALL THE CALCULATIONSOF ALL THE QUESTIONS AND SUBMIT AS ONE FILE ONLY.• Choose or solve• SEPARATE PHOTOS OF THE DOCUMENT IS NOT ALLOWED AND NO POINTS WILL BE GIVEN FOR THE SAME.1. The volume of 350. mL of gas at 25°C is decreased to 125 mL at constant pressure. What is the final temperature of the gas?2. A balloon filled with helium gas at 20°C occupies 2.91 L at 1.00 atm. The balloon is immersed in liquid nitrogen at -196°C, raising the pressure to 5.20 atm. What is the volume of the balloon in the liquid nitrogen?A) 0.15 LB) 2.1 LC) 4.0 LD) 58 L3. If the number of moles of gas is doubled at constant temperature and volume, the pressure of the gasA) is halved.B) is doubled.C) is quadrupled.D) remains the same.4. One mole of which gas has the greatest density at STP?A) ArB) N2C) COD) All three gases have the same density.5. Which of the following would have a density of 1.21 g/L at 7.0°C and 0.987 atm?A) ArB) N2C) NeD) O26. Chloroform is a volatile liquid once commonly used in the laboratory but now being phased out due to its ozone depletion potential. If the pressure of gaseous chloroform in a flask is 195 mm Hg at 25°C and its density is 1.25 g/L, what is the molar mass of chloroform?A) 10.0 g/molB) 76.3 g/molC) 119 g/molD) none of the above7. Assume that you have a sample of gas in a cylinder with a moveable piston, as shown in diagram (1). The initial pressure, number of moles, and temperature of the gas are noted on the diagram. Which diagram (2)-(4) most closely represents the result of doubling the number of moles of gas while keeping the pressure and temperature constant?A) diagram (2)B) diagram (3)C) diagram (4)8. . If 30.0 L of oxygen are cooled from 200ºC to 1°C at constant pressure, what is the new volume of oxygen?9. . A sample of N2 gas occupies 2.40 L at 20°C. If the gas is in a container that can contract or expand at constant pressure, at what temperature will the N2 occupy 4.80 L?A) 10°C B) 40°C C) 146°C D) 313°C E) 685°C10. Calculate the density, in g/L, of CO2 gas at 27°C and 0.50 atm pressure.A) 0.89 g/L B) 1.12 g/L C) 9.93 g/L D) 46.0 g/L E) 2.17 kg/L11 . What is T in the table below?V Tinitial: 91.8 mL 365 Kfinal: 45.8 mL T12. . What is the pressure (in atmospheres) of the sample of gas trapped in the closed-tube mercury manometer shown below if h = 23.6 cm?NSWER ————————-13. How many grams of N2O, nitrous oxide, are contained in 500. mL of the gas at STP?14. A sample of nitrogen gas has a volume of 32.4 L at 20°C. The gas is heated to 220ºC at constant pressure. What is the final volume of nitrogen? SHOW THE CALCULATIONA) 2.94 L B) 19.3 L C) 31.4 L D) 54.5 L E) 356 L15. What is final P in the table below? Temperature and number of moles kept constantP Vinitial: 14 atm 1.0 Lfinal: ————- 50. L