If at the beginning of the experiment, you accidentally recorded the mass of your empty beaker to be higher than the actual mass, how would this influence the final calculated percentage of the isolated sample? (Higher calculated %, lower calculated %, same calculated %)? Why do you believe this?
Q: Question 10: Give structures corresponding to each name. a) 2,7-dimethyl-4-octanol b)…
A: we have to draw the structures that correspond to the given names
Q: In a liquid-liquid extraction of benzoic acid and biphenyl using NaOH, which layer will contain the…
A: Liquid–liquid extraction: It is a method to separate compounds based on their relative solubilities…
Q: fill in the boxes with the correct reagent, reactant or product b) c) 3 d) e) f) g) (h) OH OH OH aff…
A:
Q: The pH of a solution made from a 0.62 M acetic acid solution and a 0.72 M sodium acetate solution is…
A: Answer: In this question an acidic buffer solution of weak acid (Acetic acid) and its salt with…
Q: Hello, I keep getting different answers when I submit this question, please help:
A: Solution: Recently spectroscopy especially nrm spectroscopy get great attention because of their…
Q: Calculate the molar mass of acetylsalicylic acid (C9H8O4). How many acetylsalicylic acid molecules…
A:
Q: Write the balanced COMPLETE ionic equation for the reaction when aluminum nitrate and sodium…
A: Solubility rules of hydroxides and nitrates would be used to determine the phase of product which…
Q: ammonium carbonate (heated) All equations should be balance and contain physical states. Write the…
A: Combination reaction: In this reaction, two reactants combine to form a single product; hence the…
Q: 1. Which species is a diprotic acid? Rs 2000drbes A. H₂CO3 B. HCO3 C. CO3²- 2- D. All of the above…
A:
Q: Draw the splitting tree diagram for H₁, H and He given that J = 8.0 Hz and Joc=2.0 Hz. Ho H₂CO H CH₂…
A:
Q: 102- 100- 95- 90- 85- 80- 75- 70- 65- 60- 55- 50- 45- 40- 35+ 4000 Unknown C NEAT 3500 2958.34cm-1…
A: The characteristic peak of carboxylic acid in IR is that it shows a strong and wide brand for -OH…
Q: The answer is ionization
A:
Q: 4. Calculate the pka, of an acid HA if 1.063 M of HA has an equilibrium concentration of HA equal to…
A: the Ka is the acid dissociation constant. pKa is the negative logarithm of the acid dissociation…
Q: Are the following molecules polar? NH3 = [Select] PCI4 = [Select] NOCI= [Select] HNO₂ [Select] SO3 =…
A:
Q: When the 2.5M NaOH solution is added to the solution of 50:50 mixture in diethyl ether (30 mL), a…
A: The use of electron-pushing arrows is vital for understanding chemical reactions. When used in…
Q: Please help. For the following reaction, Kc = 255 at 1000 K. CO (g) + Cl2 (g) ⇌ COCl2 (g) If a…
A:
Q: Threonine Threonine is an amino acid (H₂B* when fully protonated) with pK₂1 = 2.088 and pK₂2= 9.100.…
A: Handwritten calculations are shown below:
Q: (a) s CI CI 2 NaNH,, liq. NH Equivalent 1 NaOCH, CH₂OH (b) (d) CI Jm C 3 NaNH, liq. NH Equivalent…
A: These are the examples of E2 eliminations.
Q: STARTING AMOUNT X What is the change in enthalpy when 0.600 moles of H₂O are produced according to…
A:
Q: 2SO2 + O2 → 2SO3 a. If 90.0 g of SO2 are mixed with 100.0 g of O2, which is the limiting reagent?…
A: To solve this problem we will use the given chemical reaction .
Q: < Question 7 of 18 The electron microscope uses the wave property of electrons to observe very small…
A: Given -> Kinetic energy= E = 4.50 × 10-19 Joule Mass of an electron= 9.11×10-28g = 9.11 ×…
Q: Convert to volum fraction and wight Fraction. Component CI C2 C3 n-Cu wight (lb) 077 0 053 0.169 0 .…
A: There is a small mistake in your question row number 4, which is: n-C4…
Q: chemist crushes a 4.500g sample of the shell to a fine powder and titrates it to the endpoint with…
A: The amount of sample crushed= 4.500g Volume of HCl = 172.mL Molarity of HCl =0.380M The balanced…
Q: Reaction Coordinate Diagrams In her feedback, Eva encourages you to draw out the possible reaction…
A: An enzyme is a catalyst which increases the rate of reaction by decreasing activation energy in the…
Q: Given the reaction below: 2SO2 + O2 → 2SO3 If 90.0 g of SO2 are mixed with 100.0 g of O2, which is…
A: Limiting reagent in a chemical reaction is the chemical species which consumed completely when the…
Q: What is the theoretical yield?
A: Firat we would write a balanced chemical equation for given reaction. Then using the moles of…
Q: Two chemicals A and B are combined to form a chemical C. The rate of the reaction is proportional to…
A: Amount of A is 52 gms Amount of B is 44 gms For each gram of B 2 grams of A used (so total 3 gms of…
Q: Part A NH₂+ (aq) + CN- (aq) NH,* (aq) is the B-L acid: CN- (aq) is the B-L base. NH₂(aq) is the…
A: B-L acid or bronsted Lowry acid : the substance that becomes a base by donating H+ ion to the other…
Q: If the ultimate BOD of two wastes having k values of 0.0800 dand 0.120 d is 280.0 mg/L, what would…
A: Given: The ultimate BOD = 280.0 mg/L values of k are, k1 = 0.0800 d-1 k2 = 0.120 d-1 Find: 5-day…
Q: 19. Manganese-56 decays by beta emission and has a half-life of 2.6 hours. How many mg of a 20.0mg…
A: You have asked multiple type questions, we will solve only first questions (19th ) for you. If you…
Q: Select the correct electronic geometry for each of the following central atoms: NH3 [Select 1
A: Given: formula of compounds. Tip: electronic geometry also consider lone pair of electrons.
Q: What is molarity? Concentration of a solution in moles/kg Density of a solution in…
A: Here we are asked to define the term molarity.
Q: Determine how many moles of O2O2 are required to react completely with 6.2 molmol of C6H14C6H14.…
A: Moles of C6 H14 = 6.2 mol To find how many moles of O2 are required
Q: A student is measuring a sample of sodium bicarbonate on an electronic balance that measures to the…
A: Introduction to electronic balance- An equipment used to measure material weight accurately is an…
Q: In crystalline solids, atoms are arranged in periodic arrays. The atoms themselves are fixed in…
A:
Q: The specific heat of a certain type of metal is 0.128 J/(g. C). What is the final temperature if 305…
A:
Q: Match the pair of compounds with the type of isomerism Choices: a. Functional Isomer b.…
A: Isomerism is shown in compounds that have the same chemical formula but differ in their chemical…
Q: Calculate the number of Br atoms in 2.50 g of Br2 Molar Mass Br = 79.904 grams O 1.88 x 1022 Br…
A:
Q: Question 18 of 18 What is the de Broglie wavelength (in meters) of a 455 g football when it is…
A:
Q: Express the equalibrium constant por this reaction P₁(s) + 6C1₂ (9) = 4P(13 (9)
A: Equilibrium constant expression is the ratio of gaseous product to the gaseous reactant and its…
Q: (x) MF=CsH100 ¹H Decoupled b c 240 B ppm 0 240 DEPT 135° ppm b c 0 240 DEPT 90° ppm
A: The double bond equivalent gives us idea about propable number of double bond ring may be present in…
Q: 0.85 g of hydrogen chloride (HCI) is dissolved in water to make 7.5 L of solution. What is the pH of…
A:
Q: Draw the Lewis structures for each of the following molecules. 1) NH3 2) PC14 3) NOCI 4) HNO2 5) SO3…
A: In Lewis structure all bonds and lone pairs are shown. First of all we have to determine total…
Q: How many moles of N are in 0.205 g of N₂O? moles of N: mol N
A:
Q: Sulty of salt in 100 g10) 12R2RRAR SONEN Ca NA RONAT Dy KOO 180S C2008 1230430407000 100 Tempentue…
A: Answer:- This question is answered by using the simple concept of calculation of mass to dissolve in…
Q: • Question 12. Draw the products formed when each alcohol undergoes dehydration with TsOH, and label…
A:
Q: Given are the standard reduction potentials for the following half- reactions: Mn² (aq)+2e → Mn(s)…
A: In an electrochemical cell, the anode is the electrode that releases electrons to the external…
Q: Review & Preview Which is higher energy? 1s 3s 2p 3d 1s 2s OR OR OR OR OR OR 25 1s 3p 3p 2p 3d…
A: Electrons are filled in a different atomic orbital in an atom. According to the Aufbau rule, the…
Q: A researcher conducted an experiment and needed to use L-Leucine. He is able to scavenge four…
A: According to the given table : The melting point of L-leucine = 293 °C The melting point of L-…
Q: Starting from the structure below (sighting down the indicated bond), rotate the back carbon to…
A:
If at the beginning of the experiment, you accidentally recorded the mass of your empty
beaker to be higher than the actual mass, how would this influence the final calculated
percentage of the isolated sample? (Higher calculated %, lower calculated %, same
calculated %)? Why do you believe this?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- 5. The following contains mass measurements that are typically found with this experiment. Calculate the missing quantities. Be sure to show how you obtained your answers. A. Determination of NH4C1 47.524 1. Mass of evaporating dish #1 and original sample (g) 45.330 M 2. Mass of evaporating dish #1 (g) 3. Mass of original sample (g) 47.260 4. Mass of evaporating dish #1 after subliming NH4CI (g) 5. Mass of NH4CI (g) Calculation 6. Percent of NH,CI calculation8. Calculate the number of grams in the following in 1.77 moles of nitrogen dioxide, NO2. Must Show work with units and correct number of significant digits. Round atomic weight off periodic table to two decimal places. 9. Calculate the number of grams in the following 0.84 mole of 2-propanol, C3H30, rubbing alcohol. Must Show work with units and correct number of significant digits. Round atomic weight off periodic table to two decimal places. 10. Calculate the number of moles in 4.9 x 10³ grams of vitamin C (C6HgO6). Must Show work with units and correct number of significant digits. Round atomic weight off periodic table to two decimal places. 11. Calculate the number of moles of sodium ions in 6.56 moles of Na,S. Must Show work with units and correct number of significant digits. Round atomic weight off periodic table to two decimal places. 12. Calculate the number of molecules in 8.320 moles of Mg3(PO4)2, Must Show work with units and correct number of significant digits. Round…pshotid=2199... NDTAP Q Search this cou Use the References to access important values if needed for this question. Calculate the number of atoms of hydrogen (H) in 394 cm³ of the colorless gas butane at 25 °C and atmospheric pressure, where its density is 2.38×10³ g cm-3. The molecular formula of butane is C4H10- H atoms Submit Answer 4 question attempts remaining
- 7. In weighing by difference: Initial weight of the sample bottle containing the sample:10.0001g.Final weight of the sample bottle containing thesample:__g.Weight of the sample taken from the bottle is 6.0200 g a 3.8901 b 3.9801 c 16.0201 d 16.020Data Tabla 51589 3.053 54.639 52.99 g 52.939 Mass of empty crucible Mass of hydrate Mass of crucible and salt (before) heating Mass of crucible and salt (after: measurement 1) Mass of crucible and salt (after: measurement 2) Mass of water driven off Mass of Anhydrous Salt (Hydrate - Water) In lab a group was trying to determine the hydration number of a sample of Cobalt(II) chloride. In lab they were able to collect the required data (above) but had to finish the lab for homework. Once at home they forgot how to complete the calculation. Would you kindly help them with their calculation? What is the hydration number of this hydrate?The following chemicals will be available in the lab for this experiment: HẸHỘI NH₂ ANH Đ BaCI CaCl₂ FeCly NICI₂ HCI H₂0 K₂ CrO₂ KSCN ANH HEO Give the correct chemical formula for each of the requested chemicals. Enter the subscripts as normal characters. Ex: BaCl2 Be sure to enter any necessary parentheses. Hint: 1. After addition of what chemical will you expect to see iron precipitate from the solution? DMG 2. What chemical will be added to precipitate nickel from the solution? 3. What chemical will be added to selectively precipitate barlum from the solution (leaving the calcium ions in solution)? 4. What color is calcium oxalate? 5. One of the most common mistakes made by students in the lab is not carefully reading the labels on the reagent bottles. In this experiment, students often confuse ammonium carbonate and ammonium oxalate. What is the chemical formula for ammonium carbonate? 6. During the iron confirmation test, what chemical will be added to dissolve the FeCl 7. What…
- Multiple Choice: How many atoms of carbon-14 are in the average human body given the following four facts: 1. Carbon makes up 23% of the human body by weight. 2. The average human body has a mass of 150 kg. 3. There are approximately 83 moles in every kg of carbon. 4. One in every trillion atoms of carbon is carbon-14. a. 1,89 X 10 (exponent 15) b. 1,72 X 10 (exponent 15) c. 1,89 X 10 (exponent 16) d. 1,72 X 10 (exponent 16)If you did not properly dry the beaker before adding the sample, how would this influence the final calculated percentage of the isolated sample? (Higher calculated %, lower calculated %, same calculated %)? Why do you believe this?10. CHALLENGE. You have two distinct gaseous compounds made from element X and element Y. The mass percents are as follows: Compound I: 30.43% X, 69.57% Y Compound II: 63.64% X, 36.36% Y In their natural standard states, element X and element Y exist as gases. (Monatomic? Diatomic? Triatomic? That is for you to determine.) When you react "gas X" with "gas Y" to make the products, you get the following data (all at standard pressure and temperature): 1 volume "gas X" + 2 volumes "gas Y" → 2 volumes compound I 2 volumes "gas X" + 1 volume "gas Y" → 2 volumes compound II Assume the simplest possible formulas for reactants and products in the chemical equations above. Then, determine the relative atomic masses of element X and element Y and suggest identities.
- I do X Tabroom.c X Tuesday 3 X Iné Fanati And Fanati X vault 4n6fix || W Daughter P * || W chemquiz.net/sto/ Prodigy Caddo Mills (SD/Q Google Docs ■Google Slides Gmail Jostens Yearbook A. 1. Problem 2 NH3 + 3 12 → N2 + 6 HI If 1.6509 moles of HI are produced, how many grams of 12 were reacted? 2. F2+2 KCI 2 KF + Cl2 If 3.4983 moles of KCI are reacted, how many moles of Cl₂ will be produce 3. H2SO4 + Fe FeSO4 + H2 4. If 1.93 moles of H2 are produced, how many moles of H2SO4 were reacted C2H4 + H2 C2H6 If 2.0462 moles of C2H6 are produced, how many moles of C2H4 were rea 5. H₂SO4 + Ba(OH)2 → BaSO4 + 2 H₂O 6. If 313 grams of BaSO4 are produced, how many grams of H2SO4 were re- SiC + 2 Cl₂ SiCl4 + C If 350 ms ofA compound is 80.0% carbon and 20.0% hydrogen by mass. Assume a 100.-g sample of this compound. How many grams of each element are in this sample? Enter the number of grams of carbon followed by the number of grams of hydrogen, separated by a comma (e.g., 30.0,70.0). Express this fully so i can understand whats happeningWhich two equations contain Boltzmann's constant? Select one or more: D a. b. C. d. E =k = k1/20 9=k9 r Ad = (2k + 1) (2k +1) 3 U = = NAKT 2 2