If a physician prescribed 4 grams of aspirin to be taken by a patient daily, about how many 5 grain tablets should the patient take each day?

Q: For the following reaction: CO₂ (g) + H₂(g) = CO(g) + H₂O(g) AH = +41.2 kJ Which of the following…

A: Le Chatelier’s Principle: When factors such as concentration, pressure, temperature, inert gases…

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Q: If a can of diet soda contains 0.185 28.1 how many N, O, C, and H atoms are present in this amount

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Q: The diagrams show particle diagrams. Use the diagrams in the boxes below to answer the questions. 8…

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Q: A local fm station broadcasts at a frequency of 702 kHz. Calculate the energy of the frequency at…

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Q: Review Topics] Select the most acidic hydrogen in the molecule below. [References) . Gray C; white =…

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Q: (a) The standard reduction potential for X/X and Y/Y at 285 K are 0.52 V and 0.37 V respectively.…

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Q: What is the volume (liters) of 75.8 g of H2 at STP?

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Q: Suppose the stockroom made a mistake and gave you a mixture of potassium chlorate and potassium…

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Q: Was your average experimental mass percent of oxygen in potassium chlorate higher or lower than the…

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Q: 3. Predict the reactants and/or products of the following reactions. If the reaction will occur,…

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Q: Consider the physical process at 1 atm pressure: Br2 (l) -->  Br2 (g)   where  ΔHo = 31.0 kJ/mol and…

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Q: Q1. How many sigma bonds and pi bonds are there in each of the following molecules? HH H- :ċi: :2:…

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Q: 10.2. Show that, for an ideal gas: (a) A = [Cydr - dT dT-nRTln V-const. T+ const. TSC / AT 1 (b) G=…

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Q: 2. A 1.1324 g sample of an iron ore is dissolved in acid. The iron is oxidized to a +3 state and is…

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Q: Please provide names for the following two compounds, A. بلاء B. Lo

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Q: In(Concentration) Time (s) on these graphs the reaction would be wh second order. third order. zero…

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Q: An acid has a hydronium ion (H+) concentration of 4.6 x 10-3 M. The pH of the acid is 4.6 2.3 6.7…

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Q: Relative Intensity 100 80 20 0 MS-NW-1589 25 Question 2: Predict the structure of the unknown…

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Q: Following is H-NMR of compound A . Compound A is comprised of H, C and O atoms. In mass spectrum,…

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Q: Why is a titrant of very low concentration (0.002 M) used in this experiment? The experiment is the…

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Q: (25) Consider the following equilibrium that currently has a purple color: Heat + Co(H₂O)6 2+ +4 CI…

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Q: Consider this reaction: 2HI (g) → H₂(g) + 1₂ (g) At a certain temperature it obeys this rate law. =…

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Q: [H3O+] 3.2X10-7 6.9 x 10-8+ Inf0% 8.7 x 10-7 [OH-] 2.4 x 10-¹0 pH 1.7 7.16 6.06 11.1 Acidic, basic…

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Q: How many milliliters of silver nitrate is required in the standardization? If wt. of silver…

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Q: Classify the following molecules (based on molecular behavior) whether they are: A. Arrhenius acid…

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Q: How many moles of nitrogen atoms are in 21.40 mol of TNT? Trinitrotoluene or TNT: C7H5N306

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Q: A study of the system, 4NH3(g) +70₂(g) = 2N₂O4(g) + 6H₂O(g), was carried out. A system was prepared…

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Q: Classify these salts according to Strength and Role in the Buffer system 1. Calcium carbonate…

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Q: 3. Show the complete reaction mechanism that would make N-butylhexanamide from butane.

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Q: Calculate the percent error between your average experimental value and theoretical value for the…

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Q: When the following equation is balanced properly under basic conditions, what are the coefficients…

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Q: Which of the following is not one of the five factors that influence reaction rates? O The presence…

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Q: A reaction A(aq) + B(aq) = C(aq) has a standard free-energy change of -3.64 kJ/mol at 25 °C. What…

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Q: Q1 (a) 3.2 g of sulphur was produced in a reaction between 6.0 L of hydrogen sulfide gas with excess…

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States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.