01 ▶▶0203 >>04 >>05 >>Significant Figure RulesRulesAll nonzero digits are significant.Zeros that appear between othernonzero digits are always significant.Zeros that appear in front of all of thenonzero digits are called left-end zeros.Left-end zeros are never significant.Zeros that appear after all nonzerodigits are called right-end zeros.Right-end zeros in a number that lacksa decimal point are not significant.Right-end zeros in a number with adecimal point are significant.This is true whether the zeros occurbefore or after the decimal point.237 has three significant figures.1.897 has four significant figures.39,004 has five significant figures.5.02 has three significant figures.0.008 has one significant figure.0.000416 has three significant figures.140 has two significant figures.75,210 has four significant Ligures.620.0 has four significant figures.19.000 has five significant figures.For multiplication and division problems, the answer should berounded to the same number of significant figures as themeasurement with the least number of significant figures. YOUR TASK:Setup dimensional analysis to solve tproblems. For help, check out this gulaCancel units to prove the setups are correct.Solve the expressions with your calculatorand type the numerical answer on the board.☆Check your answers with the following#4 If you have 3.58 x 10²4molecules of carbon dioxidegas (CO₂), approximately howmany moles do you have?CD#3 How many molecules are in 4.0 molesof glucose (C6H₁206)?4.0 molés of glucose x 6.02x10^23/1 mole of glucose= 2.408*10^24 glucose molecules3.58x10^24 molecules/1 of carbon dioxide/1 mole ofco2/6.02x10^23 molecules5.94 moles of CO2February 2

Since, Moles is the ratio of mass to the molar mass of that atom or molecules. Also, Number of atoms…

YOUR TASK: • Setup dimensional analysis to solve t problems. For help, check out this guio Cancel units to prove the setups are correct. Solve the expressions with your calculator and type the numerical answer on the board. Check your answers with the following . . #4 If you have 3.58 x 10²4 molecules of carbon dioxide gas (CO₂), approximately how many moles do you have? GD COUTE Z #3 How many molecules are in 4.0 moles of glucose (C6H₁206)? 4.0 moles of glucose x 6.02x10^23/1 mole of glucose = 2.408*10^24 glucose molecules 3.58x10^24 molecules/1 of carbon dioxide/1 mole of co2/6.02x10^23 molecules = 5.94 moles of CO2 February

YOUR TASK: • Setup dimensional analysis to solve t problems. For help, check out this guio Cancel units to prove the setups are correct. Solve the expressions with your calculator and type the numerical answer on the board. Check your answers with the following . . #4 If you have 3.58 x 10²4 molecules of carbon dioxide gas (CO₂), approximately how many moles do you have? GD COUTE Z #3 How many molecules are in 4.0 moles of glucose (C6H₁206)? 4.0 moles of glucose x 6.02x10^23/1 mole of glucose = 2.408*10^24 glucose molecules 3.58x10^24 molecules/1 of carbon dioxide/1 mole of co2/6.02x10^23 molecules = 5.94 moles of CO2 February

Introductory Chemistry: A Foundation

8th Edition

ISBN:9781285199030

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter2: Measurements And Calculations

Section: Chapter Questions

Problem 104AP: Convert 45 mi/h to m/s, showing how the units cancel appropriately.

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Convert 45 mi/h to m/s, showing how the units cancel appropriately.
nHMAC%3Def41415d9158412623399163083b2ede#10001 Spr. 2021 8 Gu HI, Leira v Sign Out Item 4 I Review | Constants | Periodic Table Alexandra decides to climb Mt. Krumpett, which is 5000 m high. She determines that this will require a total of 2250 kcal of energy for the trip. For her food supply, she decides to take nutrition bars. The label states that each bar contains 50 g of carbohydrates, 10 g of fat, and 40 g of protein. Part A How many nutrition bars should Alexandra pack? Express the number of bars numerically. > View Available Hint(s) ν ΑΣφ bars Submit Previous Answers 0V 12:33
Rank the follwing temperature from highest to lowest; (I) 0.00°F;(II) 0.00°C; (III) 77.00 K; (IV) 260.00 K; (V)-180.00°C. a. I, IV, II, V, III b. II, V, I, IV, III c. II, V, IV, I, III d. II, IV, I, V, III
What is the boiling point of the unknown substance Xin K(Kelvin)? X(t) = X(g) AH-(kJ mol1) S°J mol1K1) X(g) -82.0 238 | X({) | -101 144 Express your answer in decimal notation rounded to three significant figures.
Inbc X (531 X Con X I Bala X Ans X Inbc X CHE X 101 Che X С Ч-С х b My x Unk X Sea X E I ma X app.101edu.co/# Bryant's Gmail Cascadia Canvas Lo... T GSBA Scholarship L... HOMEGROWN TRA... Learn Touch Typing... C The Science of Well... Investor360° ® Login ClickUp Reading list >> Question 7 of 40 Submit Which of the following compounds can form intermolecular hydrogen bonds? A) CH4 B) H2Se C) NH3 D) H2 E) All of these compounds can form hydrogen bonds. 10:36 AM e Type here to search 64°F 小 8/26/2021 (8)
Part D: Food Calories Naked Juice Serving size 240 mL D1. Name of food product D2. Mass of food nutrients in one serving Fat Carbohydrate 33 g, Protein g, D3. Calculations for Calories (Cal) or kilocalories (kcal) per serving kcal (Cal) Carbohydrate Protein kcal (Cal) Fat kcal (Cal) D4. Total Calories (Cal or kcal) per serving kcal (Cal) D5. Calories (for one serving) listed on the label cal (Cal) D6. Percentage of total Calories from carbohydrate % (show calculations) D7. Percentage of total Calories from protein (show calculations) % D8. Percentage of total Calories from fat (show calculations) % Q 4. How does your calculated number of Calories in one serving compare to the Calories listed on the food product nutrition label? Comment on it.
a .ull Asiacel| 10 N 141 N O A box with a volume (V=0.05 m³) lies at the bottom of a lake whose water has a density of (1*10³ kg/m³). How much force is required to lift the box, .if the mass of the box is (1000 kg) 9319.5 N O 9313.9 N O 9391.5 N O 9315.9 N O A future rectangular ship filled with oil. If the dimensions of the ship are (250 m) long, (80 m) wide, and (80 m) high. Determine how far the bottom of the ship is below the sea level? (Consider the total mass of the ship with the oil is (10.2*108 kg), and the .sea density is (1024 kg/m³))
Mg(OH)p(s) → MgO(s) + H;O(1) Express your answer in kilojoues to one decimal place. AZ Al kJ Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining Part C N;O4(g) +4H2(g)→N 2(g)+4H20(g)
Calculate the electrostatic force of repulsion for two protons separated by 93.0 pm. The charge of a proton is q = 1.6 x 10-1⁹ C. Express your answer to two significant figures and include the appropriate units. Fel = μA 2.7.10 6 Submit N Previous Answers Request Answer ? X Incorrect; Try Again; 5 attempts remaining Use the equation Fel = K(Q₁ Q₂/d²) to find the electrostatic force between the two particles. Q₁ and Q2 are the charges on the particles (charge of a proton here), and d is the distance of separation. The constant is given in the introduction and has the units Nm²/C². This means that the distance must be converted from picometers to meters using the relation 1 pm = 1 × 10¯ m. -12
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Why does the x go from:-0.9968x = -0.0025To:x= 0.0025x/0.9968And not:x= 0.9968/0.0025Wouldn't the negatives simply be ignored and the x would remain with:0.9968x and then you divide then 0.0025 without the coefficient x to get the value of x by cancelling out the 0.9968?
osjQib5plVDqEPgxo?. O GASES Solving for a gaseous reactant Jacqueline v The great French chemist Antoine Lavoisier discovered the Law of Conservation of Mass in part by doing a famous experiment in 1775. In this experiment Lavoisier found that mercury(II) oxide, when heated, decomposed into liquid mercury and an invisible and previously unknown substance: oxygen gas. 1. Write a balanced chemical equation, including physical state symbols, for the decomposition of solid mercury(II) oxide (HgO) into liquid mercury and gaseous dioxygen. 2. Suppose 25.0 mL of dioxygen gas are produced by this reaction, at a temperature of 70.0 °C and pressure of exactly 1 atm. Calculate the mass of mercury(II) oxide that must have reacted. Round your answer to 3 significant digits. Explanation Check O 2021 McGraw-Hill Education All Rights Resenved Terms of Uss Privacy Accessibility MacBook Air III