The compound HSCH,CHNH.,COOH is the amino acid cysteine, a molecule crucial tolife. What is the weight percent of sulfur in the molecule? Select one: a. 11.56% b. 5.82% c. 29.74% d. 26.46%

Q: 1 add water to 100 mL of a 0.15 M NAOH solution until the final volume is 150 mL, what will the…

A:

Q: 23. Find grams of LiCI contained in 220 mL of 0.35 M LICI: А) 0.0033 g B) 67 g C) 1.6 g D) 3.3 g E)…

A: Molarity of solution is defined as number of moles of solute dissolved per litre of solution.

Q: A. Calculate the molarity of a solution that contains 1.65 moles of ethanol in 3.22 of solution. B.…

A: A. Given data: Moles of ethanol = 1.65 mol Volume of solution = 3.22 L

Q: Octane burns according to the following equation: 2C8H18+25O2→16CO2+18H2O Calculate the grams of…

A:

Q: 11. 3.5 L of water containing 0.61 moles of NaOH would have a molarity of- 0.17 M 5.7 M a. 4.1 M 2.1…

A: Given,  Number of moles of NaOH = 0.61 mole  Volume of solution in L = 3.5 L  Calculate the molarity…

Q: The concentration of O3 at sea level and T = 298 K is 5.762 µg/mole of air. a. What is the…

A: The following unit conversions can be used to solve this problem : 1 microgram = 10-6 gram 1 metric…

Q: Determine the empirical formula for a compound that has 60.0% Sulfer and 40.0% Oxygen. If the…

A: Empirical formula is defined as simplest or most reduced whole number ratio of atoms present in a…

Q: 8. What volume of 0.200M HI is needed to neutralize 65.0 g NaOH? c. 13.0 L d. 8.12 L a. 0.325 L b.…

A: Given,0.200 M HI,65 g of NaOH

Q: equation would be [0₂] / [H₂O]²[C1₂]² [C1₂]/HCI][0₂]

A: Equilibrium constant (Kc) is the ratio of the equilibrium concentrations of product over equilibrium…

Q: Be sure to answer all parts. What is the molarity of a solution prepared using the given amount of…

A:

Q: Suppose you test a sample of a carbonated beverage with concentrated nitric acid and 2.5% ammonium…

A: Ammonium molybdate is used as a reagent in various qualitative analysis.

Q: Given 609 milliliters of 0.365 M Ca(NO3)2Ca(NO3)2, calculate the moles of solute present in this…

A: Answer :- A) 0.222 mol Molarity.                M = No. Of mole(solute)/ Solution(L)       609 mL…

Q: 1. a. Imagine that there is a certain copper containing metalloprotein, abbreviated R, which…

A: The concentration of any solution can be given by normality. molality and molarity. For a solution…

Q: Calculate the mass percent of potassium nitrate in each of the following solutions. a. 2.51 g of…

A: The question is about to calculate the Mass percent of Potassium Nitrate in each of the given…

Q: A solution is prepared by dissolving 59.3 g of KI in enough water to make 350mL of solution.…

A: Given :-  Amount of KI (solute) = 59.3 g   Volume of solution = 350 mL  Density of solution = 1.12…

Q: Part A. The molarity of a solution made by dissolving 2.5 g of KOH in 250.0 mL of water is _____ M.…

A:

Q: From the following formula, calculate the quantity of lanolin required to prepare 10 ointment tubes…

A: To determine the quantity of lanolin required to prepare 10 ointment tubes

Q: Calculate the mass of solute (in grams) of a 0.612 m solution that contains 193.44 mL of water. The…

A: Given that ; Molality of solution = 0.612 m Volume of water = 193.44 mL The density of water is 1.00…

Q: 1. Calculate all the elements present in benzoic acid in terms of a % by weight b. Mole %

A: We have to calculate the element present in benzoic acid by weight and mole % .

Q: the

A: Mass of Acetic anhydride = ( Density • volume )  Mass of Acetic anhydride = ( 1.08gmL-1 • 2.06mL )…

Q: A 2.0 L of benzene solution contains 10.0 g of toluene (C7H8). Calculate the molarity of the…

A: We have 10 g of toluene in 2L of solution , we have to calculate the Molarity of solution.

Q: patient received 3.00 L of a 0.250 M glucose intravenous solution in total. How many grams of…

A:

Q: What is the mole ratio of LIOH to CO₂ in the equation? 2LIOH + CO₂ → Li₂CO3 + H₂O A. B C. D. 2 moles…

A: To perform any chemical reaction we must know the ratio of moles of molecules which are reacting

Q: Part One: Reading Solubility Curves Use the graph to answer the following questions. REMEMBER UNITS!…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: At least 25 μg of tetrahydrocannabinol (THC), the activeingredient in marijuana, is required to…

A:

Q: How many grams of sodium phosphate, Na3PO4 can be made from 9.60 g of sodium hydroxide and…

A: The given question can be based on the prior knowledge of the mole concept and the stoichiometric…

Q: How many of the compounds shown below are expected to be readily soluble in water? a. 3 b. 0 c. 2…

A: More polar compounds are more readily soluble in water. While non-polar compounds are insoluble.

Q: B. Calculate how many liters of CO2 are produced 1. For 1.25g sodium bicarbonate 2. For 2.8g sodium…

A: • This is quantitative analysis, in which first of all we can calculate the m-mol of acetic acid…

Q: How many liters of solution contain 2.79 mol of KI if the concentration of the solution is 1.33 M in…

A: Given :-  No. of moles of KI = 2.79 mol  Molarity of solution = 1.33 M or 1.33 mol/L  To calculate…

Q: Aspirin can be synthesized in the lab by combining salicylic acid (C7H6O3)C7⁢H6⁢O3) and acetic…

A: Here we are required to find the percent yield  for the aspirin synthesized

Q: What is the mass of CO2 gas (molar mass: 44.01 g/mol) produced from the complete combustion of 4.80…

A:

Q: 20. Calculate the percent composition of Na in borax, Na2B2O7, used in commercial laundry processes.…

A: Given that -  Borax, Na2B2O7, used in commercial laundry processes    The atomic masses of different…

Q: how many grams KOH are present in 4.59 L of 2.76 M KOH solution? molar mass of KOH= 56.10 g/mol a.…

A:

Q: Which of the following will react with H3PO4 (aq)? A.     Mg(C2H3O2)2 (aq) B.    Ca(OH)2 (aq) C.…

A: Reaction on the basis of reactivity of the metal. Highly reactive metal displaces the low reactive…

Q: 29. What is the molarity of CaBr2 in a solution that contains 1.0×10³ moles of CaBr2 in 2.50L of…

A: The question is based on the concept of molarity.    it is defined as number of moles of solute…

Q: 5. Describe how you would make each of the following aqueous solutions. Indicate the amount of…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: 8. Have cach member of your group "balance" rwo of the equations below. Label cach equation with the…

A: Balanced the equation and write its name of them -

Q: What is the final concentration (M) of a solution prepared by diluting 50.0 mL of a 6.00 M KCI…

A:

Q: Which is NOT true among the following statements? a. Plants take the carbon off the carbon dioxide…

A: In bio-chemical reactions, we study  the biological processes at cellular and molecular level.

Q: How many grams of solution will contain 30.5 g of NaCl if the solution has a concentration of 8.3 %…

A:

Q: 2 Na + Cl2 --> 2 NaCl What is the mole ratio of sodium to sodium chloride? a.  2:1 b.  2:2 c.…

A:

Q: What is the molarity of a solution in which 100.0 mL of 1.0 M KCL is diluted to 1.0 L?         A.…

A: Number of moles of solute present in 1 liter of solution is known as molarity of the solution.…

Q: The products of the reaction 2HNO 3 + Ba(OH) 2 → are:   a. Ba(NO3)2 + H2O2   b. BaO(NO3)2 + H4O…

A: 2HNO3. +. Ba(OH)2 ---> ->When strong acid reacts with strong base then it produces salt and…

Q: If a solute (with molar mass 55 g/mole) in a solution has a concentration of 159% mass/volume, what…

A: The molar mass of solute is = 55 g/mole The mass/volume percent concentration of the solution is =…

Q: d. CH3CI and C2H6 27. What is the molarity (M) of a glucose solution if it contains 46.0 g of…

A: Glucose solutions of mass = 46.0g Volume of solution = 0.250 L Molar mass of glucose = 180.1559 g /…

Q: C2H5OH is an _________ substance and a ___________   a. organi, non, electrolyte b. organic,…

A: Ethanol consists of two carbon atoms, five hydrogen atoms and one -OH group i.e. alcohol group. It…

Q: The carbonate that will not decompose on heating is : a  Na2CO3 b  CaCO3 c  BaCO3 d   SrCO3 e…

A: Alkali metal carbonates (except lithium carbonate) are highly stable and does not undergo…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.