Add the following: 1.23 + 0.42000 + 1.00923 Include the correct number of significant figures.

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Q: Emma is synthesizing carbon dioxide by means of a combustion reaction of cyclopentane. She uses 15.7...

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Q: Suppose 3.85 g of chlorine, Cl2, are used to prepare dichlorine pentoxide, Cl2Os. How many moles of ...

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Q: Calculate the volume in mL  of the potassium dichromate stock solution that the chemist should pour...

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Q: Calculate the degree of unsaturation. Assign the relevant peaks in the IR spectrum. Assign the peaks...

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Q: How many moles of S are in one mole of Al2(SO4)3? O 4 mol S O 3 mol S O 1 mol S O 2 mol S

A: We know that,  Number of mole = Given mass / Molar mass  Mass = Number of moles X Molar mass   

Q: A certain reaction has an equilibrium constant of 10.1 at 25oC. A ⇄ B Determine its ΔG, in kJ/mol,...

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Q: Which of the following assumptions are made by the kinetic molecular theory of gases? I. Gas molecul...

A: in this question find out the correct option for kinetic theory of gasses 

Q: 21.33 g of an ideal gas in a 2L container at 300K has a pressure of 2 atm What is the identity of th...

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Q: Question 17 of 17 > Draw the products of the reactions. + Н,О H+

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Q: Give the number of peaks expected in the 'H NMR for the indicated protons in each of the following s...

A: Spin multiplicity =2nI+1    where n=no of hydrogen     and I=nuclear spin ,for hydrogen nuclear spin...

Q: Q2. Determine the following for the cobaltocene a. Total number of microstates possible. b. All the ...

A: Cobalt is in +2 oxidation state. Due to that two rings present around it. 

Q: A liquid and a solid of the same substance coexist in a flask as shown in the diagram below. The sys...

A: A question based on matter that is to be accomplished.

Q: Which of the following is technically considered a nonpolar covalent bond? A. C – H B. O – N C. P –...

A: we can decide whether the bond is polar or nonpolar on the basis of their electronegativity. If the ...

Q: Given the reaction: 6CO2+ 6H2O→ C6H12O6 + 6O2  ΔG°f CO2 = −394.39 kJ/mol ΔG°fH2O = −237.14 kJ/mol ...

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Q: A compound is found to contain 39.12 % carbon , 8.772 % hydrogen , and 52.11 % oxygen by mass. To an...

A: We have to predict the empirical formula and the molecular formula.  

Q: How would How would you Seperate A, B, and C below and they were mixed using eanipment. an extractio...

A: The answer is as follows:  

Q: H. CN-N H + 2 F2 → 4 HF + N2 H.

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Q: 2. Consider the cell reaction: MnO4+ Fe2* → Mn²+ + Fe³* SRP: E° Fe*/Fe²* = +0.77 V; E° MnO,/Mn²* = +...

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Q: 4. The following compound undergoes an intramolecular Diels-Alder reaction. Show the mechanism and e...

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Q: Writing a concentration equilibrium constant expression ? QUESTION Write the equilibrium constant ex...

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Q: Give the following information for the encircled element in the molecules as shown below

A:   According to VSEPR (Valence shell electron pair) theory  geometry of covalent compounds depends u...

Q: Find the pH of a solution at 25°C in which [OH"] = 2.5 x 10-4 M. %3D

A: Given :- [OH-] at 25°C = 2.5 × 10-4 M  To calculate :- pH of solution 

Q: The following mechanisms have been proposed for this reaction: Mechanism I Step 1: N:O:(g) → NO:(g) ...

A: A question based on kinetics of reactions in solution that is to be accomplished.

Q: Every double bond has _____ sigma and _____ pi bonds, whereas every triple bond has _____ sigma and ...

A: There are basically two types of covalent bonds found in most of the organic molecules i.e. sigma an...

Q: 1. How many MOLECULES of nitrogen monoxide are present in 3.82 moles of this compound ? molecules. 2...

A:  no of molecules = mole× No

Q: Use a Fischer projection to describe the stereochemistry of (R)-2-dhkorobutane by dragging the funct...

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Q: One spring Sunday, my children asked me to put the inflatable pool that measures 1m × 2m x 0.6m, but...

A: A question based on general chemistry that is to be accomplished.

Q: Calculate the pH of a solution formed by adding 2.00 grams of solid potassium cyanide, KCN, to 180.0...

A: Given,  adding 2.00 grams of solid potassium cyanide, KCN, to 180.0 ml of 0.340 M hydrocyanic acid s...

Q: Write the electron configuration for barium.

A: Electronic configuration....

Q: An unknown compound contains nickel, phosphorus, and oxygen. When analyzed, a 100.0 g sample was fou...

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Q: How many grams is needed to prepare a 0.045 molal NaOH and 185.00 mL of water? (Molar mass = 40.00 g...

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Q: The periodic table of elements contains groups of elements that have very similar reactivity. This r...

A: Answer is attached below

Q: a. Calculate the pH of a 0.2 M acetate buffer (a solution containing 0.1 mol L-l acetic acid and 0.1...

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Q: Exercise 2 Consider the three sp? hybridized orbitals, 1 25 + V3 1 2s - V3 2pz +2px 1 43 = V3 1 2Px ...

A: We have the following wave functions that we will be using during our calculations: ψ1=ψ1*=132s+232p...

Q: An unknown compound contains nickel, phosphorus, and oxygen. When analyzed, a 100.0 g sample was fou...

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Q: Suppose 3.33 g of copper are reacted with excess nitric acid according to the given equation, and 6....

A: Given data: Mass of copper = 3.33 g Mass of Cu(NO3)2 = 6.32 g Standard data: The molar mass of co...

Q: What mechanism predicts the same rate law as the data? (Can be multiple or neither)

A: The slowest step of the reaction is the rate determining step of the reaction. Rate law of the react...

Q: balanced using the smallest possible integers Li (s) + O2(g) = Li2O(s)

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Q: Balance the following chemical reaction and determine the coefficients of H2O and AIK(OH)4, respecti...

A: The Chemical reaction follows the law of conservation of mass. According to the law of conservation ...

Q: How many moles of S are in one mole of Al2(SO4)3? O 4 mol S O 1 mol S O 3 mol S O 2 mol S

A: H2 -----> 2H  1 mole of hydrogen gas contains 2 mole of atomic hydrogen  NH3 ------> N + 3H  1...

Q: Exercise 1.I Compo Question 5 of 20 A0.6834 g sample of nicotine was analyzed and found to consist o...

A: Given, Mass of sample of nicotine = 0.6834 g Mass of carbon (C) = 0.5060 g Mass of hydrogen (H) = 0....

Q: What is the molar absorptivity of a 2.50 x 10-4 M solution if its absorbance at 550 nm is 0.500? The...

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Q: An analytical chemist is titrating 221.9 mL of a 0.8100M solution of diethylamine ((C,H3),NH) with a...

A: Given that, 221.9 mL of a 0.8100 M solution of diethylamine [(C2H5)2NH] is titrating with a 0.7200 M...

Q: Calculate the mass of 1.92 x 1018 atoms of Mg. O 1.08 x 10 10g O 2.73 x 10 10 g O 7.75 x 105g O 1.62...

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Q: To manufacture S03 with the reaction 2S02(g) + 02 - > 2S03(g) A H° = -99 kJ, one way to increase the...

A: We have to predict the one way to increase the product amount at equilibrium.  

Q: What is the atom ratio between C and H in C2H5OH? O 1/5 O 2/1 O 2/6 O 2/5

A: Given, C2H5OH      Required,                   The atom ratio between C & H in C2H5OH.

Q: 1-pentanol + NaBr/H2SO4 -> 1-bromopentane Is this substitution reaction reversible? In other words,...

A: A reversible reaction attains an equilibrium state at a time t.

Q: a leaking UST has been contaminating the vadose zone with toluene for the last few years. calculate ...

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Q: E2C.8(b) Estimate AH®(750 K) for the reaction N,(g) + H,(g) → NH,(g) from the listed value of the st...

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.