A sample of calcium chloride, CaCl2, has a mass of 27.8 g. What mass of chlorine is present in the sample?   A. 6.4 grams B. 15.85 grams C. 17.79 grams D. 10.98 grams

Q: In developing the concept of electronegativity, Pauling used the term excess bond energy for the…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: If 26.2 grams of carbon (grapefruit) and 69.8 grams of oxygen combine to form carbon dioxide, how…

A: The reaction of Carbon and Oxygen to form carbon-di-oxide is--------------- C + O2 → CO2 So 1 mole…

Q: AS > 0 I2(g) + C½(g)–→2ICI(g) →2NO(g) + Br2(g) 2NOBr(g)- CH4(g) + 202(g) AS < 0 CO2(g) + 2H,0(g)…

A: Given reaction with their phase. ∆S means change in entropy. ∆S = is disorder ness of the system.…

Q: K The material labeled K contains elements that do not conduct heat or electricity well The…

A: We have to name the elements from periodic table from given choices of options having similar…

Q: sample

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Q: 16. The mass of an object can vary with the object's location. 17. A mass measurement includes the…

A: Since your question has multiple sub-parts, we will answer the first three sub-parts for you. If you…

Q: Question 20. In another investigation the student added 100 g of each substance to 200 g of water at…

A: A solubility curve indicates the solubility of solutes in water at different temperatures.

Q: 4. Exactly 2 g of steel wool was placed in a 100 g glass jar. After 50 g of water was added to the…

A: Dear student, we are authorised to solve only one question at a time. Please post rest of the…

Q: From 1962 until 1981 pennies were made from 95% copper and 5% zinc and had a mass of 3.1 g. Starting…

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Q: When a 12.259-g sample of a compound containing only copper and oxygen was decomposed it produced…

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Q: Compound A has a density of 4.5 g/cm3. Suppose you plan to mix 197 g Element A (18.9 g/cm3) with…

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Q: 3+(aq) +3 e Al(s) E° = -1.676 V %3D 2+(aq) + 2 e Zn(s) E° = -O.763 V %3D

A: Ecell for the given reaction is

Q: In a lab experiment, 8.21 g of phosphorus reacts with bromine to form 71.75 g of phosphorus…

A: According to the law of conservation of mass, the sum of mass of reactants and the sum of mass of…

Q: Chloroform, CHC13, reacts with chlorine, C12, to form carbon tetrachloride, CO14, and hydrogen.1…

A: Molar mass of CHCl3 - 119.5 g/mol Molar mass of Cl2 - 71 g/mol Molar mass of CCl4 - 154 g/mol Given,…

Q: 1. What is the sum of 89.332 g and 1.1 g? a. 90.4g b. 90.432g C. 90.0g d. 90.43g

A: The significant figures of a given number are those significant digits, which express the meaning…

Q: A sample of trifluoroacetic acid, C2HF3O2, contains 33.733.7 g of oxygen. Calculate the mass of the…

A: The molar mass of oxygen is 15.999 g/mol, so 33.7337g of oxygen converts to 2.10 moles of oxygen.…

Q: topic: matter does each sample have a measurable mass? how do you measure the mass of each sample?…

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Q: What is the percent by mass of F?

A: Percent by mass of F = (mass of F/mass of compound) × 100%

Q: A sample of silver (cs = 0.235 J/(g-°C)) is heated to 84.92°C and then dropped into 31.53 g of water…

A: Specific heat: Amount of energy required to raise the temperature of water by one degree. We can…

Q: On average, people use one teaspoon (2.5 g) of instant tea to make a 8-oz glass of ice tea. The…

A: 1 oz of iced tea contains 10 mg of caffeine.Therefore, 8 oz of iced tea contains 80 mg (0.08 g) of…

Q: Bromine (Br) and mercury (Hg) are the only two elements that occur as liquids at room temperature…

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Q: 22) An 85.5-g sample of Hg in a barometer 23) A 0.251-g Ti metal heart valve 24) A 10.0-g sample of…

A: 22) Given: Mass of Hg = 85.5 g Atomic mass of Hg = 200.59 g/mol.

Q: Determine the mol H20/mol CaSO4 if you have the following data to two decimal places (MM H20 =18.02…

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Q: a. Ca(s) + Cd²"(aq) → Ca²*(aq) + Cd(s) b. Cu*(aq) + Fe3*(aq) → Cu?+(aq) + Fe2*(aq)

A: In this question, we want to determine the cell notation of given cell Reaction.  How we can write…

Q: (a) 2C(s) + O2(s) → 2C0(g) (b) 2NAHSO3(s) Naz503(s) + 502(s) + H2O(g) (c) 2C(s) + 2H20g) CO23) +…

A: Equilibrium constant kc is the ratio of equilibrium concentration of products over the equilibrium…

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

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Q: Complete each of the following equations:

A: The complete reactions are given below -

Q: Identify the elements present in the following molecules(see Table 1.1).

A: (a) H2O Elements present : H and O.       (b) CH4 Elements present : C and H.

Q: Calculate the mass in grams of 1 mole of footballs if one football has a mass of 0.43 kg.

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Q: A 12.5g sample of a hydrate of calcium chloride is found to contain 3.06 g of water. what is the…

A: We have to predict the formula for Calcium hydrate.

Q: For the image attached Draw a graph of the average mass vs. year. Make sure axes are labeled.

A: In the given table, the average mass and year are indicated very clearly and we only need to draw…

Q: that reads 452 g. How much sample is left after half an hour? 5.00 g 90.4 g 14.1 g 75.3 g

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Q: he mass of 1 n

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Q: An iron wire has a diameter of 0.500 mm. What length of this wire contains exactly 1.00 mol of iron?…

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Q: What is the mass, in grams, of 5.23 moles of oxygen gas?

A: Number of moles of the substance is the ratio of mass to molar mass.

Q: We have 12.5 cm of a material. How many g is it? The material has density of 3.50 g/cm O 68.0 g O…

A: Given: Density of material = 3.50 g/cm3. And the volume of material = 12.5 cm3.

Q: A gold wire has a diameter of 1.00 mm. What length of this wire contains exactly 1.00 mol of gold?…

A: Given  Density of Gold = 17.g cm-3 Diameter of wire = 1.00 mm = 0.1 cm  Radius of wire = (diameter…

Q: Mass of watch glass, filter., and CaCO3 13.57 g Mass of watch glass and filter Mass of CaC03 12.43 g…

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Q: 3. Nitrogen, when combined with oxygen, can form various oxides. 3.5 g of nitrogen gas i burned in…

A: We are authorized to solve only first three subparts of a multipart question. Kindly post rest of…

Q: B) 10.01 ohia (NH3, Ks- 1.76×10³) D) 11.12 C) 11.36

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Q: ~xxx se HS04 (A) ☆ (C) (D) Fasit + 4 #504 gl "ye

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Q: An alien from the Planet X uses the units below for mass. How many zigs is 2.5 hums?  3 zigs = 1…

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Q: A solid cube of aluminum (density 2.70 g/cc) has a volume of 0.200 cc. It is known that 27.0g of…

A: Given,  The density of aluminum = 2.70 g/ cc The number of atoms present in volume 0.200 cc. of a…

Q: A) Ag,SO.(aq) + NaCl(aq) - NaSO,(aq) + AgCI(s) B) Ag,SO.(aq) + NaCI(aq) → Na,SO.(aq) + 2A9CI(aq) C)…

A: Both the questions you posted are the same.

Q: Obtain about 0.50 g of aluminum foil. Measure and record its mass accurately. Tear the foil into…

A: The given mass if the aluminum foil is about 0.50 g.

Q: Part 1 N,0(g) + NO,(g) 3NO(g) 2. Choose one: (3 [NO (g)]) 3 K = %3D [N2O (g)] [NO2 (g)] NO (g)] [N2O…

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Q: In a reaction, 33.4 g of chromium(III) oxide reacts with 11.9 g of aluminum to produce chromium and…

A: The reaction taking place is between chromium (III) oxide i.e Cr2O3 and aluminium i.e Al to produce…

Q: An iron wire has a diameter of 0.500 mm. What length of this wire contains exactly 1.00 mol of iron…

A: Given:  Diameter = 0.500 mm = 0.05 cm  So, radius = 0.05/2 = 0.025 cm  Moles of iron = 1.0 mole…

Q: You have a sample of 3.01 x 10^23 atoms of silver. How much does this sample weigh? A. 0.0500 g B.…

A: No of atoms of Silver = 3.01 × 10e23 Weigh of sample = ?

Q: What is the mass of 1 atom of krypton? a-3x10-22 g b-9x10-22 g c-2x10-26 g d-5x1025 g e-1x10-22 g

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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".