For each reaction below predict the product and write the complete ionic and net ionic equation. 1.  Potassium chromate + lead (II) nitrate 2.  Silver nitrate + potassium phosphate 3.  Barium chloride + potassium hydroxide 4.  Sodium chloride + lithium bromide

Q: Consider reaction: C2H4(g) + H2(g) --> C2H6(g) Delta H = -137.5 kJ Delta S = -120.5 J/K Calculat...

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Q: what is the mechanism UV lamp solvent, r.t., time H-N air 1a 2a За

A: In presence of UV - lamp, 2a acts as nucleophile and carry out nucleophilic addition to carbonyl com...

Q: Choose the correct letter. Explain answer briefly in 2 sentences.   When a strong acid is added to ...

A: A buffer solution is the one which resist the change in pH upon addition of small amount of strong a...

Q: Write the Structure Activity Relationship (SAR) of Nifedipine? Please answer at your own words

A: Nifedipine Used as Calcium channel blocker that used to manage angina ,high blood pressure.

Q: Determine the hybridization state of the underlined atoms in the following compounds: (a) SiBr4 and ...

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Q: The reaction A→ B + C has k = 0.034 s1 at 25° C. If [A]o = 2.4 M, then what is [A] after 4.2 s? Ente...

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Q: Identify the atoms in this Lewis structure. All atoms have a zero formal charge. Z- Y-W=X

A: Lewis structure is used to represent the molecule

Q: Write a balanced chemical equation based on the following description: aqueous iron(III) chloride re...

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Q: Acetylene, C2H2, is used in welding torches.  It releases a lot of energy when burned in oxygen.  Th...

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Q: What are the chemical equations of the following:  CuSO4 + HCl CoCl2 +HCl Ni(NO3)2 +HCl

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Q: Consider this reaction, which occurs in the atmosphere and contributes to photochemical smog: H2(g) ...

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Q: The alkali metal with an electron configuration of [Xe] 6s¹ is:

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Q: 2 HNO3 (aq) + Na2CO3 (s) --> 2 NaNO3 (aq) + H2O (l) + CO2 (g)   Calculate ΔH° for this reaction.  ...

A: For the given reaction - 2 HNO3 (aq) + Na2CO3(s) → 2 NaNO3(aq) + H2O (l) + CO2(g) ; ∆H0f = -467 kJ/m...

Q: For the equilibrium H2O (l) = H2O (g), Aps® = 118.9 J/(mol K) and A,H®= 44.0 kJ/mol. Calculate the v...

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Q: 8 %24 # m 7. 9 4 %23 V 2 IIO L. If a balloon containing 2.6 L of gas at 25°C is cooled to -85°C, wha...

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Q: Starting with the following equation, Fe2O3(s) + C(s) --> Fe(l) + CO2(g) calculate the mass in gra...

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Q: Calculate the energy required to heat 297.0 mg of cydohexane from 24.5 °C to 36.9 °C. Assume the spe...

A: We know that,  q = m.c.∆T  Where, q = heat absorbed c = the specific heat of the substance(cyclohexa...

Q: 2. Why the oscillating plots in the CO2 isotherm at temperature below Te are considered to violate B...

A: Answer -

Q: E. Precipitation (Double Replacement) Reactions The subscripts on specific ions in the products are ...

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Q: Use the octet rule and formal charges to select the best Lewis structure for CH,CONH,. B E

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Q: For the analysis of unknown soda and vinegar samples, 25.0 mL soda and 1.0 mL vinegar samples were d...

A: During the process of titration, titrant is added to the solution of analyte until the number of mol...

Q: oxidation numbers

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Q: 2. Assume that 5.60 L of hydrogen gas at STP reacts with copper (II) oxide according to the followin...

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Q: A sample of chloroethane, C,H,CI, contains 0.274 mol of the compound. What is the mass of the sample...

A: Number of moles = mass ÷ molecular mass Mass of compound=  number of moles× molecular mass For chlor...

Q: Describe the hybridization state of phosphorus in phosphorus pentabromide (PBr5).

A: Describe the hybridization state of phosphorus in phosphorus pentabromide (PBr5).

Q: Compounds Theoretical Value of Surface Calculated Surface Tension at Tension at 20°C, dyne/cm 20°C, ...

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Q: Write the Structure Activity Relationship (SAR) of Nifedipine?  Please answer at your own words

A: IUPAC name of Nifedipine - 3,5-dimethyl 2,6-dimethyl-4-(2-nitrophenyl)-1,4-dihydropyridine-3,5-dicar...

Q: 7. Use the curved arrow notations to show the flow of electrons in the given reactions. • cr b. * OH...

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Q: o Which of the following solvents is the best to use for recrystallization of Solute A? а. Water b. ...

A: The best solvent for recrystallization (which will give the highest yield) is the one which has maxi...

Q: Sodium chloride, the table salt (NaCl) is added in cooking to enhance the flavor of the food.  When ...

A: specific heat capacity is defined as the amount of heat required to raise the temperature of a subst...

Q: Europium has two naturally occurring isotopes: Eu-151 with a mass of 150.9198 amu and a natural abun...

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Q: 8. 9. 6. 7.

A: Molecules (6) and (8) are ester Molecule (7) is an ether Molecules (9) and (10) are acid halide  

Q: Suppose a piece of iron with a mass of 21.5 g at a temp of 100.0 °C is dropped into an insulated con...

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Q: Which of the indicated protons in the following molecule will produce the most upfield shift in the ...

A: Ha proton will be most upfield compared to Hb.  Because this proton is more shielded due to resonanc...

Q: %24 3. w/ 6. 8. ) 7. 5. & 4. $4 IIO 23 2 What is the partial pressure of 02 and CO, in the final mix...

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Q: Why do you need to swirl the flask constantly during the titrimetric analysis? a. To look cool durin...

A: Titration: It is an analytical method to find out the concentration of a solution with a known volum...

Q: Acetylene may be produced from the reaction between calcium carbide and water.  How many moles of ac...

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Q: Fill in the orbital energy diagram for phosphorus. 3p A 3s E 2p 2s 1s > > > > > >

A: Fill the given energy orbital diagram---

Q: Acetylene, C2H2, is used in welding torches. It releases a lot of energy when burned in oxygen. Th...

A: We have given the combustion of 1 g of acetylene releases 48.2 kJ. heat capacity of bomb calorimeter...

Q: According to the ideal gas law, a 9.556 mol sample of argon gas in a 0.8165 L container at 503.4 K s...

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Q: The heat of combustion of CH4 is 890.4 kJ/mol and the heat capacity of H2O is 75.2 J/mol×K. Find th...

A: heat of combustion of CH4 = 890.4 kJ/mol    heat capacity of H2O = 75.2 J/mol×K.

Q: Distinguish which among the following chemical reactions is (are) combustion reaction(s): a) 2H2 + ...

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Q: A gas has a volume of 42.0 L at STP conditions. What will the volume be at 2.5 atm and 20.0 C?

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Q: What is AS in one mole for ideal gas Helium from reaction equation below Не (298 К, 1 bar ) Не (100 ...

A: Entropy  is calculated  using basic Entropy  formula shown in next step.  

Q: What is the molarity of a solution containing 2.0 grams of citric acid with a molar mass of 192.124 ...

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Q: Complete the following synthesis with the missing reagent(s) or major product(s). OH MCPBA OH CN Hin...

A: Here we have to write the reactant, reagent and products-

Q: What is the relevance of the reading card and the white sheet of paper in titration? Define an endp...

A: 1. A buret reading card with a black rectangle can help you to take a more accurate reading. Read th...

Q: 3. Which of the following is a nonpolar compound but contains polar bonds? a. HCN b. NF3 c. SiF. d. ...

A: a) HCN is polar compound. b) NF3 is a polar compound. c) SiF4 is a non-polar compound and consist of...

Q: An NMR spectrometer that operates at a frequency of 60 MHz for 13C NMR spectra. The instrument opera...

A: Correct option : E  

Q: what difference between convectional cell primitive cell what difference between the crystal struct...

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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.