How many kcal/mol are in 206.16 kJ/mol? Do not put units in your answer. Do use proper significant figures.

Q: A chemist wants to make 6.5 L of a 0.280M CaCl2 solution. What mass of CaCl2 (in g) should the…

A: Molarity of a solution is defined as the number of moles of solute present in one litre of the…

Q: What is the percent by mass NaCl of a solution that contains 86.6 grams of BeO and 127.2 grams of…

A: The solution is a homogeneous mixture of solute and solvent. The solute dissolves in a solvent, in…

Q: If a solution of hydrochloric acid (HCl) has a density of 1.20 g/mL, how many moles would be…

A: Density = MassvolumeMass = Density × volumeDensity = 1.20g/mLVolume = 35.0mLMass =…

Q: One solution contains 44% alcohol, and another solution contains 81% alcohol. How many liters of 81%…

A: Given  One solution contains 44% alcohol, and another solution contains 81% alcohol. We need to find…

Q: How many molecules of cinnamic alcohol are contained in a 0.852−g sample?

A: Number of moles is given by the ratio of mass of the substance by molar mass of the substance.Number…

Q: For the following questions (Q1-Q5), consider the compound tartrazine (Yellow 5 food dye) that has a…

A: Given, 2.487 x 10-4 moles of tartrazine

Q: A chemist prepares a solution of iron(II) bromide (FeBr,) by measuring out 470. g of iron(II)…

A: Given: mass of FeBr2 = 470 g volume of flask, V=450 mL                             =0.450 L We know…

Q: How many milligrams of sodium are contained in 4.50 g of NaCl?

A: We know that,                 1 milligrams=1/1000 grams                 1 grams=1000 milligrams…

Q: A student needs to make 600 mL of a 0.81 M solution of NaCl. How many grams of NaCl should they…

A:

Q: The number of particles in 1 mole of hydrogen gas is __________. Express your answer using three…

A: Given : Moles of Hydrogen gas i.e H2 gas = 1 mol.

Q: Fill in the blanks: A Scotch whisky blend contains 40% alcohol by volume. How many milliliters of…

A: Number of mole is calculated by dividing the given mass with molecular mass.

Q: What is the percent by mass NaCl of a solution that contains 59.9 grams of NaCl and 87.6 grams of…

A: Solution: Here we have a solution contain 59.9 g NaCl and 87.6 g of water. To calculate: percent by…

Q: What is the percent by mass KBr of a solution that contains 54.5 grams of KBr and 100.8 grams of…

A: The concentration of the solution is defined as the amount of solute present in the solution. In a…

Q: What volume (in mL) of 0.849 M CaCl2 is required to deliver 0.31 moles of CaCl2? Report your answer…

A: Given that : Molarity of CaCl2 = 0.849 M Moles of CaCl2 = 0.31 moles Volume = ?

Q: A chemist prepares a solution of iron(II) bromide (FeBr,) by measuring out 125. g of iron(II)…

A: Given-> Weight of FeBr2 = 125 gm  Volume = 350 ml = 0.350 L (1 L = 1000 ml)

Q: cur. How many grams of H2 will be produced? (s) +2 HCI(s) → MnCl2(aq) + H2(g) ease type in your…

A:

Q: How many moles of KClKCl are contained in each of the following?

A: The number of moles of KCl(n) can be calculated using molarity (M) and volume (V) by using the…

Q: Determine the amount of potassium chloride in each solution. 18.5 g of a solution containing 1.08…

A: Since, mass%=mass of solutemass of solution×100

Q: How many kilocalories are present if 81J are produced?

A: Given the energy produced in J = 81 J We have to convert 81 J to kilocalories (kcal). First, we have…

Q: How many molecules of glucose are present in 27.4 grams?

A: The expression for number of moles is given by, Number of moles =MassMolar mass 1 mole of a…

Q: A chemist prepares a solution of silver nitrate (A£NO,) by weighing out 262.7 g of silver nitrate…

A: Given data Mass of Silver Nitrates, w =262.7g Volume of Solution, v       =300mL

Q: Convert 3.97×1010 J to units of kcal.

A: By using relation between J and Kcal we can solve this problem. 3.97×1010J = 9.5 × 106 Kcal

Q: A chemist prepares a solution of barium chloride (BaCl2) by measuring out 40.g of barium chloride…

A: Given,Mass of barium chloride = 40g.Volume of water = 350mL.The moles of barium chloride can be…

Q: you have 125 g of a certain seasoning and are told that it contains 22.0 g of salt. What is the…

A: Given,mass of salt = 22 gmass of seasoning = 125 gSo,mass percentage of salt in seasoning = (22…

Q: A chemist prepares a solution of silver(I) nitrate (AgNO3) by measuring out 389. μmol of silver(I)…

A:

Q: What is the percent by mass NaCl of a solution that contains 85.1 grams of NaCl and 119.1 grams of…

A: Percentage by mass (% m/m or % w/w )=mass of solutemass of solution×100%

Q: A student sets up the following equation to convert a measurement. (The ? stands for a number the…

A:

Q: Express 4.5 μmol.mL-1 s1 is the units of M.min¹ (only type in your numerical value).

A: Unit conversion is required for the given concentration, and solution is the given below.

Q: In quantitative analytical method if the final measurement is weight then it is * O gravimetric…

A:

Q: Why some chlorophyll of some leaves has different values or amount? Explain the content of…

A:

Q: 2860 kcal to kj

A: Following is the appropriate answer of the given questions.

Q: A chemist prepares a solution of silver(I) nitrate (AgNO3) by measuring out 78.μmol of silver(I)…

A: Molarity  :  molarity of a solute is the number of moles of solute present in 1 Lit. of solution. It…

Q: How many grams of solid NaNO3 came out of solution after cooling? Express your answer in grams to…

A: A). Solubility of NaNO​​​3 at 20°C = 88g/100g H​​​​​​2​​​​O 100g of H​​​​​2 O can dissolve → 88g of…

Q: In the lab, 6.07 mL of a 15.8 M HNO3 (63.01 g/mol) solution is diluted to 250.0 mL. What is the…

A: Simply use , M1V1= M2V2

Q: If you determined the average concentration of vitamin C in the fruit juice to be 0.63 mg/mL, how…

A:

Q: If a person has a blood glucose level of 106 mg / 100. mL, a level that can cause brain damage, what…

A:

Q: A chemist prepares a solution of barium chloride (BaCl,) by measuring out 48.6 g of barium chloride…

A: Assume whole volume of flask is occupied. Molecular mass of BaCl2 = 208 g

Q: Drag conversion units onto the boxes in the equation to make conversions. Some boxes can be left…

A: Since the relationship between mass and volume is  density = mass / volume Hence mass / density =…

Q: 4 PPM Moleculan yoomula ;- G# g0

A: C5H11OCl ( DBE = 5- (11+1/2)+1 = 6-6 = 0.

Q: A chemist adds 0.90L of a 1.72 M potassium iodide KI solution to a reaction flask. Calculate…

A:

Q: You have a 0.249 M solution of magnesium chloride. You pour out 541.3 mL of this solution. How many…

A: Consider the given information is as follows; Concentration of magnesium chloride = 0.249 M = 0.249…

Q: How many moles of NaOH are in 26.27 mL of 1.4 M NAOH? Do NOT place the answer in scientific notation…

A:

Q: How many grams are needed to prepare a 5,067 g of CaCl2 of 6 % solution? (Type your answer with the…

A:

Q: The concentration of an HCl solution is 0.567 g HCl/g of HCl solution (the solution containing BOTH…

A: Given the concentration of an HCl solution is 0.567 g HCl/g of the solution it means that 1 g of HCl…

Q: The solubility of magnesium phosphate is 2.27 x 103 g/1.0 L of solution. What is the Kgp for…

A: Molecular weight of Mg3(PO4)2 = 262.9 gm/mol  Weight of Mg3(PO4)2 = 2.27*10^-3 gm  So, moles = w/M =…

Q: Vhat mass ( in g ) of NaCl is needed to make 590 g of a 11.0% NaCl solu our answer to 2 decimal…

A: Given, Mass of Solution = 590 g  Mass % = 11.0 %

Q: How many mL of 0.799 molar magnesium chloride must a scientist pour into a beaker to have 16.1 g of…

A: given, molarity of magnesium chloride = 0.799 molar weight of magnesium chloride = 16.1 g

Q: 0.584 L of a 2.6 M KCl solution Express your answer using two significant figures. ν ΑΣφ ? mol

A: Given data, Volume = 0.584 L Molarity = 2.6 M

Analytical Tools

Analytical tools or analysis tools help one to get into a conclusion or results from the data collected. Analytical tools can be applied for simple data sets and also in the case of big data analytics.