Q2 State the number of significant figures in each of the following measurements: 4.5 m 0.0004 L 805 lb 1.5 cm 0.0782 in. 1 sig fig Q3 Indicate the estimated digit in each of the following measurements: 2 sig fig 48.231 g 204.52 g 625.000 mm 6 sig fig 34.80 km 4500 mi 42.50 g 8.07 lb 5 0 estimated digit is the last sig fig No. for exmp. 4500. 4 sig fig est. digit is 0.

Q: Calculate the dosage in milligrams per kilogram body weight for a 170 lblb adult who takes two…

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Q: The reaction CO2(g) + H2O(l) ⇔ H+(aq) + HCO3-(aq) has ΔH° = -12.65 kJ mol-1 and ΔS° = -192.5 J mol-1…

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Q: $BONUS QUESTION Question: Benzoic acid is a simple aromatic carboxylic acid. The salts and esters of…

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Q: Explain why alkenes are more reactive compared to alkanes.

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Q: Some H2PO4- and HPO42- are added to water such that the concentration of each is the same value,…

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Q: The element potassium forms a The symbol for this ion is The number of electrons in this ion is with…

A: Potassium is a metal and its symbol is K. Its atomic number 19. It has one valence electron. The…

Q: Define normality and molarity.

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Q: 2. Calculate the length of the line, in meters, that models octatetraene (m-8) L= m Submit Answer…

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Q: Propose a mechanism for the synthesis of a polycarbazole using Yamamoto coupling. Apply details.

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Q: Calculate the index of hydrogen deficiency for the molecule shown: CH₂ 24 H₂C-N. Type your numeric…

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Q: Complete the following table: Cation Formula Anion Formula Compound Formula Mn²+ Co²+ Pb4+ I CI ion.…

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Q: A solution of carbonate (pKa = 6.3, 10.3) contains 0.0100 mol HCO3- and 0.00500 mol CO32-. Calculate…

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Q: X. Circle and name each functional group in the following structure. H -OH cortisone acetate (active…

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Q: [Review Topics) [References] Use the References to access important values if needed for this…

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Q: Calculating a Heat of Formation Using Hess’s Law As discussed in lecture, the simplest and most…

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Q: b) Determine the standard enthalpy change and std. Gibbs free energy change of | reaction at 400 k…

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Q: A reaction 2A —> P has a third-order rate law with kr = 4.30x10^-4 dm^6mol^-2sec^-1. A. Derive the…

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Q: try to do it using line or the constitutional structures

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Q: Consider the following reaction: 4 PCl3(g) - ->P4(g) + 6 Cl2(g) If the initial concentration of…

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Q: P12.19 The following data were observed in an experiment on the photoelectric effect from potassium:…

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Q: How many moles of Si are there in a sample of Si that contains 3.74x1024 atoms? moles

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Q: Which of the following complexes is a coordination isomer of [Pd(bipy)2][Pd(OH)4]? Group of answer…

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Q: a) b) Dienophiles F LL FF Stable resonance structures

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Q: If you make up a solution of 100mL of 0.15M Tris-Base, what will be the pH?

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Q: A 1.147 g sample contains only vitamin C (CH₂O) and sucralose (C₁₂H₁, Cl,O). When the sample is…

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Q: if 0.1L of 0.1M NaOH is added to 0.9 l of 0.50 M acetate buffer at pH 4.76 what is the resultant PH?…

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Q: Define normality and molarity

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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.