ᴀ ʀᴏᴄᴋ ꜱᴀᴍᴘʟᴇ ᴄᴏɴᴛᴀɪɴꜱ ᴀ ʀᴀᴅɪᴏᴀᴄᴛɪᴠᴇ ɪꜱᴏᴛᴏᴘᴇ ᴛʜᴀᴛ ʜᴀꜱ ᴀ ʜᴀʟꜰ-ʟɪꜰᴇ ᴏꜰ ₁₀,₀₀₀ ʏᴇᴀʀꜱ. ᴏɴᴇ- ꜰᴏᴜʀᴛʜ (₂₅%) ᴏꜰ ᴛʜᴇ ᴘᴀʀᴇɴᴛ ɪꜱᴏᴛᴏᴘᴇ ʀᴇᴍᴀɪɴꜱ ɪɴ ᴀ ꜱᴀᴍᴘʟᴇ. ʜᴏᴡ ᴏʟᴅ ɪꜱ ᴛʜᴇ ꜱᴀᴍᴘʟᴇ?

Q: What are replicates in Analytical Chemistry? O The component of a sample that repeats over different…

A: Analytical chemistry is the repeated analysis of a single sample and is a measures of the greatest…

Q: Zn+ 2Au(CN)2 → Zn(CN)4+ 2Au What mass of gold would you expect to recover from 2.50x105 gr

A: Zn+ 2Au(CN)2 → Zn(CN)4+ 2Au2 mol  Au(CN)2 produces  2 mol Autherefore,2 g ×Au(CN)2 produces = 2 g…

Q: 2(8), 2(8) N,O;(g) → 2 NO,(g) + ¿ O2(g) ¿0g]/10-² M [NO,]/10-2 M [0,]/10-² M 1.24 0.92 0.64 0.16…

A: Calculate the concentration at 70 min....

Q: A mixture of cyclohexane (b.p 81 °C) and toluene (b.p 110.8 °C) need to be separated and collected…

A: Given that, a mixture of cyclohexane (b.p 81 °C) and toluene (b.p 110.8 °C) needs to be separated…

Q: Question 34

A: Mixture: Combination of two or more different materials in a way that no chemical reaction occurs.…

Q: Mg(NO3)2+ (NH4)2C204→ Ca(NO3)2 + (NH4)2C2O4 – Sr(NO3)2 + (NH4)2C204 Ba(NO3)2 (NH4)2C2O4-

A:

Q: A calibration curve of ZnCl2 conductivity (y-axis) vs concentration (mass percent, x-axis) is made.…

A: In the linear regression plot, the X-axis represents the mass percent of ZnCl2. The Y-axis…

Q: How many Cu atoms are present in a 75.0 cm length of 20 gauge copper wire? A 20 gauge copper wire…

A: Given that Length of wire= 75 cm  Diameter = 0.03196 in  Since 1 inch = 2.54 cm  So  Radius =…

Q: Calculate the surface area in nm^2 of water contained in a watch glass with a diameter of 9.0cm. The…

A: Given,Diameter = 9.0 cm

Q: 6. Fe + C12 FeC13 7. Fe + 02 - Fe203 8. N2 + 02 - N205 9. N2 + H2 NH3 10. NH3 + 02 - N2 + Н20

A: We can balance the chemical equations by counting each elements in reactants side and product…

Q: Draw the product formed in each reaction.

A: The product formed in the given reaction

Q: What is 1.0 mg/cm2 in kg/m2

A: Please find your solution below : Unit conversion is a multi-step process that involves the…

Q: How many sig figs are in the following numbers

A: All non-zeros are significant  Leading zeros are non-significant whereas trailing zeros are…

Q: A sample of 5 lactobacillus bacteria found in yogurt measure 7.9 x 10-6 m in total length. A second…

A: Total length of 5 bacteria = 7.9 x 10-6 m Total length of 3 bacteria = 5.2 x 10-6 m

Q: How many mg does an 830 kg sample contain?     a. 8.30 × 10-4 mg   b. 8.30 × 107 mg   c. 8.30…

A: Dimensional analysis is a method to convert from one quantity to another by using conversion factors…

Q: MnO4−(aq) + 8H+(aq) + 5e−  Mn2+(aq) + 4H2O(l) +1.51 V Cr2O72−(aq) + 6e−  2Cr3+(aq) + 7H2O(l) +1.33 V…

A: In an electrochemical cell, the electrode with higher standard reduction potential acts as a cathode…

Q: List and Define kinds of samples according to size:

A: This is a question from Analytical Chemistry. Sample size means amount of sample taken for analysis.…

Q: 3g. 2Fe203 + 3C ----> 3CO2 + 4Fe 3h. Fe2S3 ----> 2Fe + 3S 3i. 2KI + Pb(NO3)2 · ----> 2KNO3 + Pbl

A:

Q: The mass spectra of 1-methoxybutane, 2-methoxybutane, and 2-methoxy-2-methylpropane are shown below.…

A: a. Analyzing mass spectrum for figure (a)

Q: 462 2 T28 O2s 2 2 62 A 28 T2p O: 020 2 : 02 2 o?: 02 2. 2 T28 2 628 2T2P 1. 2 02 2 つ:020 2 202 2 T28…

A:

Q: A sample is said to be homogeneous if 1. OThe sample has a different composition in different parts…

A: Correct answer is (2.) The sample is completely mixed up. Homogenous mixture has uniform mixture and…

Q: Calculate the mass and volume (mL) of 5.0 mmol triethylsilane Mw: 116.28 g/mol Density: 0.728 g/mL

A: Given :-  moles of triethylsilane = 5.0 mmol  Molecular weight = 116.28 g/mol Density= 0.728 g/mL…

Q: NH2 (c) NH2 (b) (a) NH2 NH2 H2N. CH3 CH3 CH3 CH3 NANH, NH3 CH3 50% 50% 50% 50% CH3 100% NH2 (e) H-N.…

A:

Q: Write the following in Standard form

A: Standard form is used for writing very large numbers or very small numbers

Q: 3.0 liter dye sample with a density of 4.65 g/mL was found to contain 27.5 g of Pb3N2(k). How many…

A: Density = 4.65 g/mL  Volume = 3.0 L = 3000 mL  Mass of Pb3N2 = 27.5 g  Mass of On = ?

Q: C;H,O2 20 1 30 3H t 8.04 1H,s J=7 4 20 2H.9 J=7 3 2 PPM 6.

A:

Q: Draw the products of each reaction.

A: The product of each reaction has to be drawn.

Q: Part A 5100000 g   5.10×106g 5.1×106g 0.510×107g 0.51×107g 5.1×10-6g   Part B 26000 s   2.60×104s…

A: Since Lowest significant digit present in the given questions is also a part of answer means same…

Q: Gwen (а) 2нва сд) = На ед) + бог сд) (1) ke что Кс (ii) ke ke = (B) sFz cg'tch2 c9) = 2CFg (3) (;)…

A:

Q: Am I right? Sample 1 2 3 Calculations for sample 1 Mass of aluminum dish   1.24g 1.26g…

A: Percentage of water  = mass of watermass of anhydrate  x 100

Q: SIC1₂ vapor. proofed by coating it with a silicone layer. This is done by exposing the cloth to…

A: Given as, n(CH3)SiCl 2 +2nOH→2nCl- +nH2O+[(CH 3)2SiO] n ​

Q: a) b) c) d) e) 1) g) h) i) D k) 1) n) MeO it with Jul 8.0 MeO 1.00 8.0 1 L 7.8 I 7.8 ľ K FAK 1 7.6…

A: 1HNMR Spectra given above have signals between 6 to 8 ppm taht is aromatic region .therefore, by…

Q: Co S04 504 Ba Soy 2504 Na 2504

A: As I can see that all the five examples you asked are sulphates. The solubility of sulphates in…

Q: (g) P4(s) + Cl2(g) - PCI3(1) (h) PtCL4 (s) → Pt (s) + Cl2(g)

A:

Q: H Не 1.008 4 Li Be 4.003 6 B CN oF Ne 10.81 12.011 14.007 15.999 18.998 20.180 13 10 5.94 9.012 11…

A: Identify the correct relationship of the following---

Q: (iv) (1) РОСІ3/РMF →? (2) NaHCO3 Br2/CHC13 (v) →? 'N' H.

A:

Q: A method of analysis yields masses of gold that are low by 0.5 mg. This method is used for analysis…

A:

Q: Taking logarithms and antilogarithms is necessary to solve many chemistry problems. For practice,…

A:

Q: Run 0.01 0.0005 1 0.001 0.01 0.0025 0.005a2 0.01 0.01 0.005 3 il reg 4 olo 2nirio 0.02 HM oion 0.01…

A: Let assume the reaction is     A+B=C  The meaning of this equation is 1 mol  of A reacts with 1 mol…

Q: CP- YY - Convert 18.8 TM³ to ZW 3 1 TM = 7.108 DD, using the following equalities: 1 CP = 2.104 BX,…

A: The given value is: 18.8 CP2TM3, and we have to convert the above value to the unit, YY2ZW3.

Q: Calculate Delta H for the reaction

A: The enthalpy change of reaction is calculated as,

Q: David decides that it is better to create a blend containing 50% NaCI, 33% KCI and 17% CaCl2, than…

A:

Q: a. 8.24 m to mm (1 m = 1000 mm) %3! b. 2.67 qt to L (1 qt = 0.947 L) c. 6.1 ft to cm (1 in = 2.54…

A: This question is based on unit conversion.  Thus,

Q: Questions 13 through 16 pertain the following medication order. PHARMACY STOCK Calcium chloride 13.6…

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

Q: Data ) Mass of Sodium Salicylate (g) 115a X 2) Concentration of Sodium Salicylate (M) 287 10M…

A: The concentration of the solution can be measured in various units the commonly used is molarity.…

Q: 1 H 1.008 3 4 Li Be 6.94 9.012 5 7 8 9 BCNO F 10.81 6 24 11 2 He 4.003 14 15 16 10 Ne 12.011 14.007…

A:

Q: Part A - Determining Density and Using Density to Determine Volume or Mass Platinum, Pt, is one of…

A:

Q: Metal Ba²+2e=Ba Cr²+2e=Cr Cr³+ + 3e Cr As + 3H+3e AsH3 Cd²+ + 2e = Cd Pb²+ + 2e = Pb Se + 2H+ 2e…

A:

Q: 2.66 + 4.38 ×10* -1.0835×10 K K JK T -1.2517×10¬ K -2.85 + 6.543×10² K?

A: Now, ∆S298 =2S298oHcl-S298oCl2-S298oH2 ∆S298 =2×186.9-223.1-130.7∆S298 =20Jkmol

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".