Bundle: Chemistry for Engineering Students, 3rd, Loose-Leaf + OWLv2 with QuickPrep 24-Months Printed Access Card
3rd Edition
ISBN: 9781305367388
Author: Lawrence S. Brown, Tom Holme
Publisher: Cengage Learning
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Chapter 1, Problem 1.32PAE
1.28 What is a “derived” unit?
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Please help me with # 4 and 5. Thanks in advance!
A small artisanal cheesemaker is testing the acidity of their milk
before it coagulates. During fermentation, bacteria produce lactic
acid (K₁ = 1.4 x 104), a weak acid that helps to curdle the milk and
develop flavor. The cheesemaker has measured that the developing
mixture contains lactic acid at an initial concentration of 0.025 M.
Your task is to calculate the pH of this mixture and determine whether
it meets the required acidity for proper cheese development. To
achieve the best flavor, texture and reduce/control microbial growth,
the pH range needs to be between pH 4.6 and 5.0.
Assumptions:
Lactic acid is a monoprotic acid
H
H
:0:0:
H-C-C
H
:0:
O-H
Figure 1: Lewis Structure for Lactic Acid
For simplicity, you can use the generic formula HA to represent the acid
You can assume lactic acid dissociation is in water as milk is mostly water.
Temperature is 25°C
1. Write the K, expression for the dissociation of lactic acid in the space provided. Do not forget to
include state symbols.…
Curved arrows are used to illustrate the flow of electrons. Using the provided starting and product
structures, draw the curved electron-pushing arrows for the following reaction or mechanistic step(s).
Be sure to account for all bond-breaking and bond-making steps.
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Chapter 1 Solutions
Bundle: Chemistry for Engineering Students, 3rd, Loose-Leaf + OWLv2 with QuickPrep 24-Months Printed Access Card
Ch. 1 - Prob. 1COCh. 1 - Prob. 2COCh. 1 - Draw pictures to illustrate simple chemical...Ch. 1 - Explain the difference between inductive and...Ch. 1 - Use appropriate techniques to convert measurements...Ch. 1 - Express the results of calculations using the...Ch. 1 - Use the web to determine the mass of a steel...Ch. 1 - Prob. 1.2PAECh. 1 - Where does the scientific method start? What is...Ch. 1 - Use the web to determine the amount of aluminum...
Ch. 1 - Use the web to find current prices offered for...Ch. 1 - Use the web to determine the differences in the...Ch. 1 - When we make observations in the laboratory, which...Ch. 1 - Which of the following items are matter and which...Ch. 1 - Which macroscopic characteristics differentiate...Ch. 1 - How can a liquid be distinguished from a fine...Ch. 1 - Some farmers use ammonia, NHS, as a fertilizer....Ch. 1 - 1.10 Do the terms element and atom mean the same...Ch. 1 - 1.11 Label each of the following as either a...Ch. 1 - 1.12 Why do physical properties play a role in...Ch. 1 - 1.13 Physical properties may change because of a...Ch. 1 - 1.14 Which part of the following descriptions of a...Ch. 1 - Use a molecular level description to explain why...Ch. 1 - All molecules attract each other to some extent,...Ch. 1 - 1.15 We used the example of attendance at a...Ch. 1 - 1.16 Complete the following statement: Data that...Ch. 1 - 1.17 Complete the following statement: Data that...Ch. 1 - 1.18 Two golfers are practicing shots around a...Ch. 1 - Prob. 1.23PAECh. 1 - 1.20 Suppose that you are waiting at a corner for...Ch. 1 - 1.21 When a scientist looks at an experiment and...Ch. 1 - 1.22 What is the difference between a hypothesis...Ch. 1 - 1.23 Should the words theory and model be used...Ch. 1 - 1.24 What is a law of nature? Are all scientific...Ch. 1 - 1.25 Describe a miscommunication that can arise...Ch. 1 - 1.26 What is the difference between a qualitative...Ch. 1 - 1.27 Identify which of the following units are...Ch. 1 - 1.28 What is a “derived” unit?Ch. 1 - 1.29 Rank the following prefixes in order of...Ch. 1 - 1.30 The largest computers now include disk...Ch. 1 - Prob. 1.35PAECh. 1 - 1.32 Use the web to determine how the Btu was...Ch. 1 - 1.33 How many micrograms are equal to one gram?Ch. 1 - 1.34 Convert the value 0.120 ppb into ppm.Ch. 1 - 1.35 How was the Fahrenheit temperature scale...Ch. 1 - Superconductors are materials that have no...Ch. 1 - 1.37 Express each of the following temperatures in...Ch. 1 - 1.38 Express (a) 275 oC in K, (b) 25.55 K in oC,...Ch. 1 - 1.39 Express each of the following numbers in...Ch. 1 - 1.40 How many significant figures are there in...Ch. 1 - 1.41 How many significant figures are present in...Ch. 1 - Perform these calculations and express the result...Ch. 1 - 1.43 Calculate the following to the correct number...Ch. 1 - 1.44 In an attempt to determine the velocity of a...Ch. 1 - 1.45 A student finds that the mass of an object is...Ch. 1 - 1.46 Measurements indicate that 23.6% of the...Ch. 1 - 1.47 A student weighs 10 quarters and finds that...Ch. 1 - 1.48 A rock is placed on a balance and its mass is...Ch. 1 - 1.49 A package of eight apples has a mass of 1.00...Ch. 1 - Prob. 1.54PAECh. 1 - 1.51 A person measures 173 cm in height. What is...Ch. 1 - 1.52 The distance between two atoms in a molecule...Ch. 1 - 1.53 Carry out the following unit conversions. (a)...Ch. 1 - 1.54 Carry out each of the following conversions....Ch. 1 - 1.55 Convert 22.3 mL to (a) liters, (b) cubic...Ch. 1 - 1.56 If a vehicle is travelling 92 m/s, what is...Ch. 1 - 1.57 A load of asphalt weights 245 lb. and...Ch. 1 - 1.58 One square mile contains exactly 640 acres....Ch. 1 - 1.59 A sample of crude oil has a density of 0.87...Ch. 1 - 1.60 Mercury has a density of 13.6 g/mL. What is...Ch. 1 - 1.61 The area of the 48 contiguous states is...Ch. 1 - 1.62 The dimensions of aluminium foil in a box for...Ch. 1 - Prob. 1.67PAECh. 1 - 1.64 Wire is often sold in pound spools according...Ch. 1 - 1.65 An industrial engineer is designing a process...Ch. 1 - 1.66 An engineer is working with archaeologists to...Ch. 1 - Draw a molecular scale picture to show how a...Ch. 1 - Prob. 1.72PAECh. 1 - 1.67 On average, Earth’s crust contains about 8.1...Ch. 1 - Prob. 1.74PAECh. 1 - 1.69 The “Western Stone” in Jerusalem is one of...Ch. 1 - A load of bauxite has a density of 3.15 g/cm3. If...Ch. 1 - Prob. 1.77PAECh. 1 - Prob. 1.78PAECh. 1 - Prob. 1.79PAECh. 1 - Prob. 1.80PAECh. 1 - Prob. 1.81PAECh. 1 - Use the web to research the elastic modulus and...Ch. 1 - Prob. 1.83PAECh. 1 - 1.84 A student was given two metal cubes that...Ch. 1 - 1.85 Battery acid has a density of 1.285 g/mL and...Ch. 1 - 1.86 Unfermented grape juice used to make wine is...Ch. 1 - 1.87 A solution of ethanol in water has a volume...Ch. 1 - 1.88 Legend has it that Archimedes, a famous...Ch. 1 - 1.89 Imagine that you place a cork measuring...Ch. 1 - 1.90 A calibrated flask was filled to the 25.00-mL...
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- 3:48 PM Fri Apr 4 K Problem 4 of 10 Submit Curved arrows are used to illustrate the flow of electrons. Using the provided starting and product structures, draw the curved electron-pushing arrows for the following reaction or mechanistic step(s). Be sure to account for all bond-breaking and bond-making steps. Mg. :0: Select to Add Arrows :0: :Br: Mg :0: :0: Select to Add Arrows Mg. Br: :0: 0:0- Br -190 H 0:0 Select to Add Arrows Select to Add Arrows neutralizing workup H CH3arrow_forwardIarrow_forwardDraw the Markovnikov product of the hydrobromination of this alkene. Note for advanced students: draw only one product, and don't worry about showing any stereochemistry. Drawing dash and wedge bonds has been disabled for this problem. + Explanation Check 1 X E 4 1 1 1 1 1 HBr Click and drag to start drawing a structure. 80 LE #3 @ 2 $4 0 I அ2 % 85 F * K M ? BH 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center & 6 27 FG F10 8 9 R T Y U D F G H P J K L Z X C V B N M Q W A S H option command H command optiarrow_forward
- Be sure to use wedge and dash bonds to show the stereochemistry of the products when it's important, for example to distinguish between two different major products. Predict the major products of the following reaction. Explanation Q F1 A Check F2 @ 2 # 3 + X 80 F3 W E S D $ 4 I O H. H₂ 2 R Pt % 05 LL ee F6 F5 T <6 G Click and drag to start drawing a structure. 27 & A 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center Acce Y U H DII 8 9 F10 4 J K L Z X C V B N M T H option command F11 P H commandarrow_forwardCurved arrows are used to illustrate the flow of electrons. Use the reaction conditions provided and follow the arrows to draw the intermediate and product in this reaction or mechanistic step(s). Include all lone pairs and charges as appropriate. Ignore stereochemistry. Ignore inorganic byproducts. H :0: CH3 O: OH Q CH3OH2+ Draw Intermediate protonation CH3OH CH3OH nucleophilic addition H Draw Intermediate deprotonation :0: H3C CH3OH2* protonation H 0: H CH3 H.arrow_forwardPredicting the reactants or products of hemiacetal and acetal formation uentify the missing organic reactants in the following reaction: H+ X+Y OH H+ за Note: This chemical equation only focuses on the important organic molecules in the reaction. Additional inorganic or small-molecule reactants or products (like H2O) are not shown. In the drawing area below, draw the skeletal ("line") structures of the missing organic reactants X and Y. You may draw the structures in any arrangement that you like, so long as they aren't touching. Explanation Check Click and drag to start drawing a structure. ? olo 18 Ar © 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibilityarrow_forward
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