Select the single best answer. Which of the following has more atoms: 2.49 g of hydrogen atoms or 18.4 g of gallium atoms? 18.4 g of gallium O 249 g of hydrogen

Q: A 13.6 mL solution of 0.100 mol L-1 CH3COOH is titrated using 0.150 mol L-1 NaOH. What is the pH of ...

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Q: 2. Using the data in Part B, calculate the following and complete the table below. (See pg 5 in Lab ...

A: Answer: Dissolution process of NaHCO3 in water is an exothermic process and in the question we have ...

Q: The sulfur in an 3-tablet shape of captodiamine C21H29NS2 was converted to sulfate and determined gr...

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Q: if the change in pH after addition of 1.0mL of 0.10N HCI is 0.09, what is the total buffer capacity ...

A: Given-> Volume of HCl = 1.0 ml Normality = 0.10 N Change in pH = 0.09  Volume of solution = 20 ml...

Q: A mixture of xenon and hydrogen gas is compressed from a volume of 93.0 L to a volume of 89.0 L, whi...

A: Given, Initial volume (Vi) = 93.0 L Final volume (Vf) = 89.0 L Pressure (P) = 75.0 atm Work done on ...

Q: A pictorial representation of an electronic configuration is shown.   Give the full electron confi...

A: Given,  Based on pictorial representation of an electronic configuration the name of the element is ...

Q: In general, native (folded) proteins are in equilibrium with denatured (unfolded) forms: Protein(fol...

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Q: What is the average mass, In grams, of one Zn atom? Multiple Choice O 394 x 10259 O 65.39 amu O 1661...

A: Calculation of mass of zinc:

Q: Something is wrong with all 7 of these hypothetical responses for acids and bases. Your job is to fi...

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Q: Consider the following reactions and associated equilibrium constants: A(g) C(g) K. = 1.700 *104 D(g...

A: Answer: This is the question based on the in depth understanding of equilibrium constant expression.

Q: Click in the answer box to activate the palette. Determine the empirical formula of a compound conta...

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Q: Wh e following desribes Exuoida A Enzymes that eleaves starch and glyeegen at the a -6 linkages 4 En...

A: According to guidelines we supposed to answer only three  Please post rest of the parts as separate ...

Q: What is the role of cation during ion-dipole interactions? A.  it distorts the electron distributio...

A: Ion dipole interaction: It is defined as the interaction between ion and a molecule with permanent d...

Q: 10- 0.02 g of AGNO3 in 100 ml of water express the concentration in ppm ? 20ppm 200ppm

A: Given values-> Weight of AgNO3= 0.02 gm Volume of water = 100 ml  

Q: BASES: Base is one of the four classification of compounds. (Sentence 1: Bases will turn red litmus ...

A: Bases-  Any substance which contains OH ion or donate the lone pair of electron. 

Q: Part B 8.10x10 kJ/mol Submit Request Answer • Part C 1860 kJ/mol t

A: E= hc/wavelength

Q: What is the molar solubility of NiS if the Ksp is 3.0 × 10-20? NiS(s) ⇌ Ni2+(aq) + S2−(aq)

A: Given,  NiS(s) ⇌ Ni2+ (aq) + S2- (aq)  The Ksp of NiS is 3.0× 10-20  The molar solubility of NiS is:...

Q: What is the Ksp for the following reaction if the concentration of La3+ was measured to be 9.2 × 10-...

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Q: Answer each of the questions pertaining a. Is this an endergonic or an exergonic reaction? b. Which ...

A: When a n enzyme is used then activation energy decreased and rate increases.  

Q: Aqueous hydrochloric acid (HCI) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium ...

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Q: I need help with making an ir spectrum Analysis for Cyclohexanone  that includes in a table: Ir ab...

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Q: need help with making an ir spectrum Analysis for Cyclohexanol  that includes in a table: Ir absor...

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Q: Decide whether each molecule or polyatomic ion is polar or nonpolar. If the molecule or polyatomic i...

A: ★ F2 :  F2 is homonuclear diatomic molecule which is non polar . A homonculear diatomic molecule F2 ...

Q: When 0.7521 g of benzoic acid was burned in a calorimeter containing 1,000. g of water, a temperatur...

A: Mass of benzoic acid burned is = 0.7521 g The heat of combustion of benzoic acid s= -26.42 kJ/g

Q: How is the solubility of oxygen in water affected by increasing temperature

A:                                   Answer    How is the solubility of oxygen in water affected by inc...

Q: Calculation of Phosphate Buffer Solution using Henderson-Hasselbach equation

A: Henderson-Hasselbach equation is given as:                                    pH = pKa + log [Conjug...

Q: Calculate the expectation value of the radius (r) at which you would find the electron if the H atom...

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Q: What kind of solvent ingredients is widely is usually used in mouthwash, perfumes  and spray A. Eth...

A: Solution is made up of two components: solue and Solvent. Component which is present in major amount...

Q: Scientists can determine the age of ancient objects by the method of radiocarbon dating. The bombard...

A: a) Dinosaur fossils are too old to be reliably dated using carbon-14. Suppose we had a 67 million ye...

Q: If a plot of 1/[A] versus time produces a straight line with a positive slope for the reaction A B +...

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Q: How would the calculated molar concentration of the analyte be affected if the burette is rinsed wit...

A: Before starting any titration it is very important to rinsed the burette with the corresponding solu...

Q: Calculate the E and identify the type of electrochemical cells of the following: (a) Ag|AgBr (a=0.10...

A:                                            EBr-/AgBr/Ag0 = 0.10 VECl-/AgCl/Ag = 0.22 V Anode:       ...

Q: The decomposition of XY is second order in XY and has a rate constant of 7.00×10−3 L mol−1 s−1 at a ...

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Q: Which of the following statements does NOT explain why KHP is a suitable primary standard in an acid...

A:   KHP is a suitable primary standard in an acid-base titration. Here we have to find out the stateme...

Q: Terminal alkynes react with Br2 and water to yield bromo ketones. For example: Br2, H20 CH2Br Propos...

A: Alkyne gives an electrophilic addition reaction with bromine water to form alpha bromoketone.

Q: List at least three (3) physical or spectroscopic methods that can be used to differentiate between ...

A: In analytical chemistry, qualitative analyses deals with identification and quality of the compounds...

Q: 1. 3C2H5OH) + 2O2ig) 5CO2(9) + 2H2O(@) 2. 2NO2(9) 2NO(9) + O2(9)

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Q: Argon gas is collected by water displacement in an eudiometer. The gas volume is 29.2 mL. The liquid...

A: Given: Gas volume (V1) = 29.2 mL Temperature (T1) = 21 oC = 294 K Total pressure of Argon gas (P1) =...

Q: 4- Titrimetric methods : are quantitative methods that are based on determining the mass of a pure c...

A: This question is related to titrimetric methods where a solution of a known concentration is used to...

Q: Tobramycin sulfate is a 7-ion electrolyte and has a molecular weight of 1425.45 g/mol. Assuming that...

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Q: The following reaction is known to have a very large equilibrium constant. 4 NH;(g) + 5O2(g) 4 NO(g)...

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Q: 3. How many water molecules are in 2.00 liters of water? The density of water is 1.00 g/mL.

A: Density of water = 1.00 g/mL It means 1.00 mL water contains 1.00 g

Q: Calculate the pH of an acetic acid/acetate buffer after the addition of 21.60 mL of a 0.200 M NaOH t...

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Q: Noting the curved arrows, draw all the product(s), organic and inorganic, of the following reaction....

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Q: Directions: Use solution stoichiometry to answer the following problems. Show your complete solution...

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Q: order of elution of the three halocarbons with respect to: a) Molecular size alone b) Boiling point ...

A: Molecular size order :  Carbon tetrachloride (CCl4) > Chloroform (CCl3) > Dichloromethane (CCl...

Q: 5. Calculate the vapor pressure of water above a solution prepared by adding 22.5 g of lactose (C12H...

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Q: НО NaOH (CH3),N (CH3),NCH,CH,CI Can you show this mechanism please?

A: Nucleophilic substitution biomolecular reaction (SN2): The bimolecular nucleophilic substitution rea...

Q: c. 1.520M HCN solution, KA= 4.12x 10 d. 3.85 x 10° M CH,NH, solution that is 0.900% ionized e. 2.35 ...

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Q: Describe the effects of cooling an exothermic reaction at equilibrium.

A: Given it's a exothermic reaction. 

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.