Q: How many grams do 3.6x10^24 atoms of boron weight? Answer in Units of g
A: Given data,Number of B atoms=3.6×1024atomsMolar mass of B=10.811g/mol
Q: estion 15 of 27 How many grams of F are in 155 g CaF,? mass:
A:
Q: Determine the mass in grams of 5.28 × 10²¹ atoms of barium. (The mass of one mole of barium is…
A: Given, Number of barium atoms =5.28×1021 atomsmass of one mole of barium =137.33 gwe are asked to…
Q: Part A A salt crystal has a mass of 0.16 mg . How many NaCl formula units does it contain? Express…
A: Mass of NaCl = 0.16mg or 0.00016g Molar mass of NaCl = 23 + 35.5 = 58.5g/mol
Q: How it is useful and important the knowledge of mass percent and morality calculation in healthcare…
A: Mass percent is the measurement of an element in the molecule,compound or tablet in case of…
Q: A compound contains only carbon and hydrogen and has aformula mass of 28.06 amu. What is its…
A: Given data: Molar mass of the compound = 28.06 amu
Q: What is the number of formula units of 5.36 grams of ammonium sulfate?
A: Avogadro's number gives the number of atoms, molecules or ions in one mole of the substance and it…
Q: 2) a. Calcula te the molar mass of water. b. find out the number of moles of water in of water. 20g…
A: We have 20 g of water, the molar mass of water, moles of water in 20g , the number of water…
Q: A compound contains only nitrogen and oxygen and has aformula mass of 44.02 amu. What is its…
A: The atomic mass of Nitrogen, N = 14.01 amu The atomic mass of Oxygen, O = 16 amu The atomic mass of…
Q: 15) How many moles of 0 atoms are in 2.5.19 of CaSO,?
A:
Q: Choose the letters that apply: Suppose we have 2 substances (chloroform and aspirin), in computing…
A: Given : Choose the letters that apply: Suppose we have 2 substances (chloroform and aspirin), in…
Q: What is the percent by mass of H in isobutyl benzene (C10H14)? The molecular weight of carbon is…
A: Given values: The molecular weight of carbon is 12.0107 g/mol. The molecular weight of hydrogen is…
Q: Calculate the number of grams in the following in 1.77 moles of nitrogen dioxide, NO2. Must Show…
A: Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: of 10 ot in Progress oms of carbon are combined with 6.67 moles of hydrogen atoms
A: Given, Moles = 6.67 mol Moles of C = 6×6.67 mol
Q: Unknown c. Volume Sor OEn Unknown dulfate. 100.0ml 20.43.28g mas of Empty Crutible & cover Maai of…
A: 1 mol barium sulfate contains 1 mol of sulfate and 1 mol of barium ion. Also, No of moles = Mass /…
Q: Question 29 of 30 Which of the following contains the most moles of atoms? A) 1 g of helium B) 1 g…
A: Moles of elements can be determine by the following formula Moles = mass of elementmolqr mass
Q: Calculate the mass in grams of 5.5000x10^18 molecules of dinitrogen tetroxide. Please write your…
A: Given that: Molecules of Dinitrogen tetraoxide = 5.5000×1018 molecules Mass of Dinitrogen tetraoxide…
Q: Calculate the number of moles of aluminum, sulfur, and oxygen atoms in 4.00 moles of aluminum…
A:
Q: Calculate the mass of diphosphorus pentoxide (P2O5) that contains a million (1.0x1023) oxygen atoms.…
A:
Q: What is the no. Of atoms present in 46 g of Na?
A:
Q: 2.7 grams of nitrogen can make the maximun mass of how much ammonia
A:
Q: A molecular compound is found to consist of 30.4% nitrogen and 69.6% oxygen. If the molecule…
A: Interpretation: A molecular compound is found to consist of 30.4% nitrogen and 69.6% oxygen. A…
Q: 1. Determine the Molecular Mass of the following compound: NH,C,H,O,
A: Dear student I have given answer to your question in the image format.
Q: What is the molar mass of sugar: C6H12O6? Round answer and elements to the tenths place. (C = 12.0,…
A:
Q: [References] with the empirical formula CH, was found to have a molar mass of approximately 84 g.…
A: Empirical Formula Empirical formula of a chemical compound is the simplest possible integer ratio of…
Q: Mass of magnesum before experiment is 0.33g after is 0.49g Calculate the ratio between the…
A:
Q: One molecule of H2SO4 would have a mass in grams equal to?
A: Given, one molecule of H2SO4we are asked to calculate the mass of one molecule of H2SO4 in grams.
Q: Choose the letter/s that applies: In the periodic table, where Carbon is 12, it is stating that:…
A: Given that : We have to identify which statement is correct for Carbon-12 : a. carbon's weight is 12…
Q: How many moles of calcium atoms do you have if you have 7.92 × 10²¹ atoms of calcium. (The mass of…
A: Given: Atoms of calcium is 7.92 × 10²¹ Mass of one mole of calcium is 40.08 g.
Q: How many moles of oxygen atoms are in 5.0E-1 moles of CO? Only give the numeric value of your…
A: The molecular formula of carbon monoxide ( CO ) suggests that one molecule of carbon monoxide…
Q: How many MOLECULES of dioxygen difluoride are present in 9.22 grams of this compound ?
A: We know, 1 mole of a compound contains 1 Avogadro number of molecules, where 1 avogadro number =…
Q: round answer to three significant figures. The formula of sodium nitrate is NaNO3. determine the…
A:
Q: 3 molecule(s) of dinitrogen pentoxide contains: How many oxygen atoms? How many total atoms?
A: The molecular formula of dinitrogen pentoxide is N2O5
Q: Which of the following has greater mass: 2 atoms of mercury or 3.41 × 10-23 mol of beryllium? 3.41 ×…
A:
Q: Hello, What is the connection between Avogadro's number and the Mole? Please provide an example.
A: Avogadro number is number of unit in one mole of any substance.
Q: what mass of calcium chlorate must be measured if a sample is to contain 4.17g of chlorine (C12)?…
A: Given : Mass of chlorine (Cl2) = 4.17 g Formula of calcium chlorate is CaClO3.
Q: How many moles of sulfur atoms are there in a sample that consists of 1.79e+20 formula units of…
A: Use formulas Mole=mass÷molar mass Total molecule/formula unit=mole×6×1023 Mass= 28.64×10-3gm
Q: What is the mass of PbCl2 (Lead Chloride)?
A:
Q: How do i Calcualate the percent composition for each element in alumnium nitrate?
A:
Q: • Part A How many titanium atoms are in a pure titanium bicycle frame with a mass of 1.12 kg ? ? Ti…
A: 1mole=6.023×1023molecules/atoms/ions.1mole = molar mas of any substance.atomic masy of Titanium…
Q: Calculate the mass of 2.6 moles of magnesium. Answer: _ g Mg
A:
Q: 2a Calculate the formula mass of Mga(PO.)2 2b Use dimensional analysis to convert 1.75 mol Mgs(PO4),…
A: Formula mass of Mg3(PO4) 2 = 3 ( Atomic mass of Mg) + 2 ( Atomic mass of P + 4(Atomic mass of O) )…
Q: Determine the mass in grams of 5.15 × 10²¹ atoms of chromium. (The mass of one mole of chromium is…
A: Molar mass of any substance is the mass of one mole of substance and one mole of substance contains…
Q: Part A What mass of phosphorous pentafluoride has the same number of fluorine atoms as 27 grams of…
A: Given, mass of oxygen difluoride (OF2) = 27 g mass of phosphorus pentafluoride (PF5) = ? Note:…
Q: The molar mass unit is gram per litter t true False
A: Explanation to the correct answer is given below
Q: How many atoms is 48.62 moles of zinc
A: Solution:- The values provided in the question are:- i) Number of moles of zinc = 48.62 mol…
Q: How is the molecular mass of a compound the same as themolar mass, and how is it different?
A: The molecular mass indicates the mass of one molecule and it is obtained by adding the masses in amu…
Q: Question 1 A hydrocarbon icompound that contains only carbon and hydrogen) contains 85.63 % carbon…
A:
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- topic: Proper Use and Calibration of the pH meter Why is it necessary to rinse the pH electrode with distilled water every after pH readings? explain pleaseSituation: The amount of protein in a sample of cheese is determined by a Kjeldahl analysis for nitrogen. After digesting a 0.9814-g sample of cheese, the nitrogen is oxidized to NH4+, converted to NH3 with NaOH, and distilled into a collection flask containing 50.00 mL of 0.1047 M HCl. The excess HCl is back titrated with 0.1183 M NaOH, requiring 22.84 mL to reach the bromothymol blue end point. Questions: Write the reactions involved in the above Kjeldahl analysis? Bromothymol blue is used as the indicator of titration; can you give the reason for this?Solubility question again! Calculate the solubility (in g/L) of Aluminum sulfide (Al2S3) in .1 M H2S solution (standrard conditions) {Ksp for Al2S3 is 1.5×10-27}.
- This is an unknown solution which comprises of several ions possible for analysis. From the given information, determine which ions are present. Use + for positive, - for negative, or ? for insufficient information. An unknown solution containing the ions listed to the right was found: For Group I Cations: 1). A white precipitate was generated when 2 drops of 6M HCl solution was added to the unknown solution test tube. 2). Di water was added to the solution from part 1, and then the ppt was separated from the supernatant. The ppt was then washed with DI water few times to make sure is ppt is clean. 3). On the ppt separated from part 2 excess 6M NH3 was added and as a result all the ppt was dissolved. For Group III Cations: 4). An addition of Excess 6M NH3 led to a basic solution and a ppt. The ppt was then separated from the supernatant. 5). When Excess 6M NaOH was…Question: How do you expect solubility of potassium bitartrate to vary between solutions with and without KNO3?A 0.0515 g pure potassium dichromate was dissolved in water and a large excess of KI was added. The liberated iodine required 45.54 mL of thiosulfate solution. Calculate the molarity of Na2S2O3. Choices: 0.384 M, 0.0231 M, 0.00200 M, 1.050 M
- ANSWER PLEASE HUHU A 100.0-mL sample of spring water was treated to convert any iron present to Fe2+. Addition of 25.00-mL of 0.00250 M K2Cr2O7 resulted in the reaction 6Fe2+ + Cr2O7 2- + 14H+ → 6Fe3+ + 2Cr3+ + 7H2O The excess K2Cr2O7 was back-titrated with 9.40 mL of 0.00951 M Fe2+ solution. Calculate the concentration of iron in the sample in parts per million.One of the components in TAE is 0.5 M EDTA. Answer the following: a. How much EDTA is needed to prepare 100 ml of 0.5 M EDTA? EDTA MW = 372.2 g/mole b. As EDTA dissolves in water, the [H+] will increase (note that full name of EDTAincludes "acetate"). To achieve a pH = 8.0, would you need to add HCl or NaOH? c) When you make your agarose gel, you will need to make 50 ml of 1% (w/v) agarose in 1X TAE. How much agarose is needed to make this solution?PROBLEM: To measure the Ca2+ concentration in human blood, 1.00 mL of blood was treated with Na₂C2O4 solution to precipitate the Ca²+ as CaC₂O4. The precipitate was filtered and dissolved in dilute H₂SO4 to release C₂O42, which was titrated with KMnO4 solution. The solution required 2.05mL of 4.88x10-4 M KMnO4 to reach the end point. The balanced equation is 2 KMnO4 (aq) + 5 CaC₂O4 (s) + 8 H₂SO4 (aq) → 2 MnSO4 (aq) + K₂SO4 (aq) + 5 CaSO4 (s) + 10 CO₂ (g) + 8 H₂O (1)
- In Winkler Method, why starch indicator is added only when the color of the solution appears to be faint yellow?POTASSIUM PERMANGANATE AND SULFURIC ACID Place 10 drops of 0.1M potassium permanganate solution in a test tube. Add 2 drops of 6M sulfuric acid. Add drop by drop 0.1M sodium bisulfite solution until a definite color change is observed. Observations: Balanced chemical equation: H2SO4(aq) + 4KMnO4(aq) + 10NaHSO3(aq) → 6H2O(l) + 2K2SO4(aq) + 4MnSO4(aq) + 5Na2SO4(aq) What substance is responsible for the color change?If the water sample used for titration was buffered with acid instead of alkali, the amount of EDTA required to reach the endpoint will: a. stay constant b. be indeterminatec. increased. decrease