The weight of helium in a balloon can be estimated by calculating the volume of a sphere with the same diameter as the balloon's width. Helium has density about 0.165 oz/ ft3. What is the weight of helium in a balloon with width 10 in., rounded to the nearest hundredth of an ounce? OZ

Q: In each of the molecules drawn below one chemical bond is colored red. Decide whether this bond is…

A: Given molecules are :-  N2 , HBr , BrF  Electronegativity order :-  F > O >  N = Cl > Br…

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Q: A multivitamin sample has a label claim of 500 mg ascorbic acid (176.12 g/mol). According to quality…

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Q: Write a chemical equation to show vitamin C is oxidized by iodine.

A: Ascorbic acid is known as vitamin C.

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Q: An ingredient of Tiger Balm salve is composed of C, H and O.  A 0.1005 g sample of the ingredient is…

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Q: How much ml of ethanol is needed to make 2000ml of an aqueous 15% (v/v) solution? A. 3000 mL B. 300…

A: Given: Volume of solution = 2000 mL v/v% of aqueous solution = 15%

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Q: What is the effect of performing titration between 80-90 degrees Celsius?

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Q: 3. Consider the spectral data for 3-nitrophthalic acid. a. In the functional group region of the IR…

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A: The cell given is, Given: Volume of cell = 1.00 L And current = 26 A

Q: Determine the value of AG°rxn for the target equation by using the three reactions provided. Target…

A: Target equation :-  2B + D ----> A + 5/2 C  We have to find ∆G° reaction for above given…

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Q: Write the reducing product of mannose sugar, the reducing agent, sodium borohydride, NaBH4?

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Q: 5. If a hydrocarbon compound has a formula mass of 16.04g, what is its empirical formula? О СН2 O…

A: Given :-  Empirical formula  CH2  CH4  C2H2  CH3 Empirical Formula mass = 16.04 g  To identify :-…

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Q: Determine the total number of sigma bonds and the total number of pi bonds in the compound below

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Q: Provide an IUPAC name for the compound below. ball & stick labels (Specify (E) or (Z)…

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Q: A (3.6500 g) of impure ammonium aluminium sulfate (NH4AI(SO4)2)) was treated with ammonia (NH3(aq))…

A: Given: Mass of sample = 3.6500 g. Mass of Al2O3 formed = 0.4935 g.

Q: lodine-131 is used to treat Graves disease, a disease of the thyroid gland. The amount of 1 used…

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Q: Ses an isotope produced from atmospherc testing of maclear bombs. lf nucler testing was stopped in…

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Q: A 9.0 g sample of iron (specific heat= 0.44 J/g °C) heated to 60°C eventually cools to  30°C. What…

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Q: A completely made up compound of fluoride, XCl2, is found to have a molar solubility of 8.31 x…

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Q: Estimate the mass of KHP (KHC8H4O4)  that will require 20mL of 0.10M to reach the equivalence point…

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Q: What was done to ensure that there are no more chloride ions present in the precipitate? A Addition…

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Q: 1. H2CrO4 2. SOCI2, pyr. 3. (CH,CH2)2NH (xs) HO-

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Q: 4. Aspirin is one of the products when you mix Salicylic acid and Acetic anhydride. One kilogram of…

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.