A peak clutes from a column at 29.1 min, with a width at half height of 13.8 s. How many theoretical plates does this column have? N= The column length is 12.0 cm. What is the plate height in millimeters? plates mm

Q: Give a Carrect formula between Ca (9) Ca₂1 (b) Calz (e) C92 13 C9312 and I A

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Q: what is the precent mass of oxalat in (K3Fe(C2O4)3·3H2O, 491.3 g/mol)?

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Q: Give the symbol for an element that is 1) a transition metal in the fourth period from the following…

A: The symbol of elements can be written on the basis of the above provided description by using the…

Q: In 1982, the production of a single atom of 266/109  Mt (meitnerium-266) was reported. Describe the…

A: The given element is meitnerium (Mt). It has mass number equal to 266 and atomic number equal to…

Q: Co

A: Isotopes : if two same element have same atomic number but atomic masses are different then we can…

Q: The mass of black copper oxide in grams resulting from the thermal disintegration of J319 grams of…

A: Consider the given balanced equation as;             Mass of copper sulfate (CUSO4) = 319 g…

Q: Calculate the molar mass of Al(C2H302)3. Aluminum is element 13; Carbon is element 6; Hydrogen is…

A: Check the atomic mass for each element and use it to calculate the molar mass of Al(C2H3O2)3.

Q: Which species is being oxidized in the following reaction? 2 Au(NO3)3(aq) + 3 Ca(s)3 Ca(NO3) (aq) +…

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Q: What is the Chamical Name of the follawing: OI 2 Hz ZNO 3..Irclk 12 H, O

A: We have to tell the chemical name of the below-given compounds OI H2ZnO IrCl4.12H2O.

Q: If the formula of an oxide of element X is X₂03, what is the formula of the chloride of X? (A) XC13…

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Q: 66. Which element do you expect to be most like magnesium? Why?(a) potassium(b) silver(c) bromine(d)…

A: Magnesium = Its atomic number is 12, and present in Group 2 in the periodic table.

Q: Calculate the precise mass of each ion to five significant figures. Unless otherwise indicated, use…

A: The compound considered is methylbromide cation, [CH3Br] +

Q: How many neutrons are present in a 137Ba²+ ion? (a) 81 (b) 83 (c) 56 (d) 58

A: Given that: Element = 137Ba2+Mass number = 137

Q: what makes thw difference between the isotopes of an element?

A: an elements having same atomic number but different masses are said to be isotopes

Q: 68. Which pair of elements do you expect to be most similar? Why?(a) Ti and Ga(b) N and O(c) Li and…

A: The elements belonging to the same group exhibit similar properties. This is because the elements in…

Q: Classify each of the following fifth-row elements as a metal, a metalloid, or a nonmetal: (a) Y (b)…

A: The metals are elements that are aligned left side of the periodic table and have a tendency to lose…

Q: Consider the balanced reaction 5 A + 5 B → 3 C + 6 D

A: 1 mole  B = 24.85 g of B 1 mole C = 20.23 g of C

Q: Consider the following equation: The mass number of element X is: 213A + 23B 87C+ (x}x + 3 n

A: this problem is based on the conservation of mass. So mass in reactant will be equal to the mass in…

Q: 3. Based on the band of stability, what is the approximate neutron to proton ratio for vanadium…

A: Given that Zvanadium =23 We have to calculate the the approximate neutron to proton ratio.

Q: A. K2Cr207 + FeSO4 + H2SO4 → Cr2(SO4)3 + Fez(SO4)3 K2SO4 + H2O

A: The unbalanced equation is: K2Cr2O7(aq) + FeSO4(aq) + H2SO4(aq)  ---> Cr2(SO4)3(aq) +…

Q: Naturally occurring lithium consists of 6Li (6.0151 u) and 7Li (7.0160 u). What is the relative…

A: Mass of 6Li = 6.0151 uMass of 7Li = 7.0160 uAtomic mass of Li = 6.941 u

Q: The element xenon (Xe) was the last of the noble gases discovered by Sir William Ramsay, and the…

A: Given information: Atomic volume of argon = 22.56 cm3/mol Atomic volume of krypton = 27.99 cm3/mol

Q: Give the names of the following binary compounds beetween two nonmetals. (a) CC14 (d) PH3 (b) P4010…

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Q: Assume vit K1 makes up 0.052% ( by mass) of cilantro. How many moles of vit K1 is there in your…

A: Vit K1 makes up 0.052% (by mass) of cilantro. 1 tsp of cilantro is used here and volume of 1 tsp is…

Q: Does any element with Z ≤ 92 match the description? An element in period 3 and group 8A.

A: Step 1: Period 3 Elements: The elements in Period 3 of the periodic table are Sodium (Na,…

Q: 4oloctron uminum lóA AlT ఆంం canfiquratioA Ale 3+ lán Al

A: To find out the electronic configuration of an ion at first, find out the electronic configuration…

Q: What is the molecular weight of compound BaCl₂2H₂O in unit amu (atomic mass unit) (U)

A: Molar mass is equal to sum of atomic mass of all elements

Q: A student obtained the following data in this experiment. Fill in the blanks in the data and make…

A: All the values can be calculated using the given experimental data.  Some values would require…

Q: Choose the correct answer. The difference between the massnumber of an isotope and its atomic number…

A: The mass number of an isotope is the sum of the number of protons present in an atom and the number…

Q: A. Write the Xnotation for each atomic depiction: (a) Z 18e 18p* 20nº (b) 25e 25p* 30n (c) 47e 47p*…

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Q: Is 1s22s22p6 the symbol for a macroscopic property or a microscopic property of an element? Explain…

A: Property of a molecule can be macroscopic or microscopic. Macroscopic property represents the…

Q: Predict the reactants of this chemical reaction. That is, fill in the left side of the chemical…

A: Answer: Given two products in the reaction are Ca(ClO)2 and H2O and we have to find out the…

Q: 3) In a far away land and long ago, a series of experiments were carried out. Three samples of…

A: In 2) Use law of constang proportion Divide the both Kalium and pyron masses We see that A same and…

Q: 3. For each of the following symbols, clearly specify the number of protons, the number of neutrons,…

A: ->Number of proton + Number of neutron = Mass number  -> Number of proton = Number of electron…

Q: Anhydrous CuSO4 is converted to CuSO4・xH2O to absorb water from certain liquids. What is the value…

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Q: 16) What's the atomic number of sulfur-34 ? A) 34 B) 18 C) 16 17) In the formula of hydroxylapatite…

A: According to our guidelines we can answer only three subparts

Q: 13. Consider the table below. What is the relative abundance of isotope A? Isotope Abundance A 65 B…

A: Abundance of A (Abd A) = 65 Abundance of B (AbdB) = 115 Abundance of C (AbdC) = 20 Total Abundance…

Q: what is the mass percentage of water in Zn(NO3)2*6H2O?

A: Mass percentage of water = Mass of waterMass of Zn(NO3)2.6H2Ox100There are total six water molecule…

Q: The decay series of Uranium 238 includes 3 isotopes. Which one has the greatest abundance in a…

A: Uranium-238 is a radioactive element that undergoes a complex decay series, eventually transforming…

Q: Prepare Co.IN of wazco3 in ( 250 ml) D. w. Atom:c weight Na - 23 ,C - 12,0=16

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Q: 28. a) 60u Calculate the molecular mass of HNO3 b) 63u c) 65u

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Q: 29. The mass spectrum shown is that of which element? (A) Y (B) Mo (C) Os (D) Zr O m/z Relative…

A: Every element exists as a different isotope and each isotope has a different relative abundanceThe…

Q: 5. The atomic mass of naturally-occurring chlorine is 35.45. From this you can deduce that (A)…

A: Given questions related to the concept of isotopes and kinetic energy of gas molecules.

Q: Naturally occurring silver consists of 107Ag (106.905 u) and 109Ag (108.905 u). What is the relative…

A: The relative abundance of an isotope is the percentage of a particular isotope that occurs in…

Q: mass spectrometer is being used to separate common oxygen-16 from the much rarer oxygen-18, taken…

A: