Which of the following processes is a physical change? Burning gasoline O Cooking an egg Decomposing meat Evaporating water Rusting iron

Q: Question 20 Listen A quantitative observation contains a number and a unit does not contain a number…

A: Generally there is two types of observation that are quantitative and qualitative. Here the question…

Q: HO 15 (continued). Fill in the boxes. Write NR for no reaction. DMP 1) TSCI, pyridine 2) Nal -a CH3…

A: OH in the presence of pyridine reacts with tosylchloride to get tosylated product which reacts with…

Q: used by magicians in the Magic Academy of the Northern Vale. Aurora, the queen of the icy continent…

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Q: 1) Which is a triatomic molecule? a) NO2 b) Cl2 c) CuCl 2 d) HBr e) AsH 3 f) NaNO3 g) CaO

A: Molecule which have three same or different atoms are called triatomic molecules. a) NO2 is…

Q: A sample of household ammonia has a pH of 11.9. What are the pOH and [OH-] of the sample?

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Q: H-OH CHO НО HO-H HO-H Н H-OH поп

A: Given a carbohydrate

Q: The following thermochemical equation is for the reaction of H₂S(g) with O2 (g) to form H₂O(g) and…

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Q: Methylamine, CH3NH2, is a weak base that hydrolyzes water according to the equation shown below. The…

A: Given :  Concentration of methylamine = 0.225 M  Kb of methylamine= 5.2 x 10-4

Q: OAc can be used for Sn2 as well  How would this be incorporated into the answer

A: OAc- is a weak nucleophile,  and here solvet is DMSO.

Q: The average molecular speed in a sample of SO₂ gas at a certain temperature is 311 m/s. The average…

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Q: SHOW WORK. Convert the following energy measurement to the unit shown

A: Conversion factor is used to convert 1 set of unit to another set of unit . Steps to convert calorie…

Q: Fill in the missing information for the following isotopes: 34 Si X = X 36 X 6P X=

A: We have been given two isotopes and we have been asked to write missing information.Atomic number is…

Q: Convert the following energy measurement to the unit shown. Answer the questions related to the…

A: Dimensional analysis is used to convert a physical quantity given in one type of unit to some other…

Q: Draw resonance structures for thiazyl fluoride, F3NS.

A: Since you have posted multiple questions, we will provide the solution only to the first question as…

Q: Xylulose has the following structural formula. To what carbohydrate class does xylulose belong based…

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Q: Chemistry M + at m/z = 116, relative height = 14% (M + 1) at m/z = 117, relative height 0.924%…

A: The molecular formula of a compound can be determined by analyzing the mass spectrum of the…

Q: Li 1.28 Be 0.96 The atomic radii of the Period 2 elements and the Period 3 elements are shown below.…

A: The periodic table is a tabular representation of different chemical elements that is arranged in…

Q: Consider the following elementary reaction mechanism where both the forward and reverse reactions…

A: 1. The chemical rate differential equations for the elementary reaction mechanism above are as…

Q: Complete the following non-metric conversions using the table of conversions in the slides. Remember…

A: Dimensional analysis is used to convert a physical quantity given in one type of unit to some other…

Q: Using the following data, which is the correct rate law of the sample reaction? A + 5B + 6C → 3D +…

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Q: Write propagation steps a major product: NBS peroxide

A: This is Allylic bromination reaction in presence of peroxide.

Q: 1 Which of the following is the correct IUPAC name for the following compound? A.…

A: The given compounds contain an alkene functional group. For the IUPAC name of an alkene, first of…

Q: Phenol, C6H5OH, is used as a disinfectant. The pH of an aqueous phenol solution was measured at…

A: pH is measure of acidity or basiciity of a solution.We have been given value of pH and we have been…

Q: An aqueous solution has a hydronium ion concentration of 3.2 × 10-6 M. What is the pH?

A: Hydronium ion concentration is an important parameter of an aqueous solution. The concentration of…

Q: What are the precipitates that were produced during the calcium and chloride ion test? Write the…

A: The precipitate formed when a reagent is added to the solution and a insoluble product is formed…

Q: Vrite a (balanced) equation for a single replacement reaction of Copper (II) sulfate and aluminum…

A: Given : Al and copper(II) sulfate reacts

Q: )Determine the empirical formula for a compound that contains carbon, hydrogen, and oxygen. 100 mg…

A: Given: The total mass of the com[ound = 100 mg The mass of C in the compound = 64.81 mg The mass of…

Q: Which of the following statements is/are true? a. Mixing acetone and ethanol resulted in an increase…

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Q: SCR What amino acid sequence would you expect from the translation of the following mRNA segment?…

A: We need to write the amino acid sequence corresponding to the mRNA segment given. The given mRNA…

Q: I just was wondering why its not 2e- for the second reaction and just e-

A: Given , To balance the reaction .

Q: Which is the more effective buffer? O 2.0 M NaCN/1.0 M HCN O 0.25 M NaCN/0.20 M HCN O 2.0 M NaCN/1.5…

A: Answer:-  This is acidic buffer solution having weak acid HCN and salt NaCN of weak acid HCN and…

Q: What is the density, in g/mL, of a metal that has a mass of 230 mg and a volume of 12 mL? g/mL Is…

A: We are given mass and volume of metal and we are asked to calculate density of metal.  Formula used:…

Q: using curve arrow notation, draw all significant resonance structures for the following molecule.…

A: Resonance structure: If the Lewis structure of a molecule or ion cannot explain by a single…

Q: 2. a b) Write the electron configuration for the Cu atom in condensed (noble gas) format. The…

A: 2. We have to answers the following questions. We have to give the condensed electronic…

Q: a. Be(OH)2 + H₂SO4 → b. H₂B-NH₂ + HBr → c. PC15 (g) + SO2 (g) → d. Al2Se3 (s) + HCl(aq) → e. Cl2(aq)…

A: Finish and balance the following reactions.   Dear student, according to the Bartleby guidelines, we…

Q: 2. Predict which member of each pair will be more soluble in water. Explain the reasons for your…

A: A question based on properties of liquid. Two sets of organic compounds are prescribed for which…

Q: DF OFFIC ANSCR CH3 Classify the amino acid with the R group -CH2-CH-CH3 according to its polarity. O…

A: These amino acids are nonpolar

Q: 1. Give IUPC name for the following compounds a) (CH3)3COH c) HOCH₂CH2OH b) CH₂=CH-CH₂OH d)…

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Q: Consider the following hypothetical chemical reaction: A3 (g) + 4B (g) → C (g). If this reaction has…

A: Kindly refer to attached images.

Q: Molecule H₂S PCI % lonic Character Lewis Structure Structural Formula Shape

A: % Ionic Character: The % ionic character quantifies whether a link between two atoms is covalent or…

Q: species that were reduced and oxidized. + MnO; → HCOO + MnOz CH:OH

A: Oxidation half: CH3OH   ----->  HCOO-    Reduction half: MnO4-  ------>  MnO2

Q: Both answer plz   What is the total sample size (in grams) for a sample of magensium nitrate which…

A: Given ->  Weight of Oxygen= 2.93 gm

Q: 1. What complex ion has the smallest octahedral field-splitting energy? Choices: o [Rh(OH₂)6]³+ o…

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Q: For the reaction below, indicate whether the equilibrium tends "to the left", "to the right" or "no…

A: The given reaction is, N2O4 (g) ⇋  2 NO2 (g) According to Le chatelier's principle if we reduce the…

Q: Provide the necessary reactants to make these following transformations/l 1) 2) 3) H3C H OH NH₂ H₂C…

A: These are aminoacid synthesis from acid, which requires reaction with ammonia at last step as shown…

Q: How do you separate a mixture of naphthalene, biphenyl-4-carboxylic acid, and 4-chloroaniline? Thank…

A: Carboxylic acid react with bicarbonate to produce water soluble sodium salt NH2 group reacts with…

Q: 6. Complete and balance the following redox equation. The sum of the smallest whole-number…

A: For balancing of redox reaction both atom and charge must be balanced.

Q: Using Slater's Rules, calculate Zef for the outermost s electron of vanadium, V(0). Explain. Using…

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Q: Perform the following computation using your calculator: (report your answer to 4 significant digits…

A: Given computation is 4-3 =?

Q: D Question 29 An atom has an outer shell configuration of ns² (n-1)d². Its most likely ion or ions…

A: We need to check the number of electrons lost from s and d-orbital. Then find out the mass of…

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.