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Q: Substance Specific Heat Brick 0.20 Ethanol 0.58 Wood 0.10 culate the amount of heat, in calories, th...

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Q: 2 Volume HCI Added (mL) Strong Base//Weak Acid Strong Acid/Strong Base Strong Acid/Weak Base Weak Ac...

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Q: 0.0471 kg of biphenyl (C12H10) is dissolve in benzene (C6H6) to create a solution with a total volum...

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Q: The standard free energy of formation of ammonia is -16.5 kJ/mol. N2(g) + 3H, (g) 2NH, (g) 2nd attem...

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Q: Rewrite this number in nonscientific notation, to the correct number of significant figures. 5.15 x ...

A: The nonscientific notation of the above number is given below

Q: A solution contains 0.134 M sodium nitrite and 0.305 M nitrous acid. The pH of this solution is Subm...

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Q: Predict the product and balance  redox reaction As2S3 + conc HNO3  =

A: The product of the reaction is, As2S3 + conc.HNO3→H3AsO4+H2SO4+NO2 ​       ​   ​  

Q: но What is the chemical formula for the limiting reactant in the reaction shown? chemical formula:

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Q: Determine the pH change when 0.119 mol NaOH is added to 1.00 L of a buffer solution that is 0.438 M ...

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Q: A catalyst provides an alternate pathway for a reaction to occur. The alternate pathway has a lower ...

A: The stoichiometry of the reaction does not change because when a catalyst is present in the reaction...

Q: Question 3 Calculate the amount of heat absorbed by 10.0 grams of ice at-15.0°C as it is converted t...

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Q: O=Z

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Q: How many grams of water can be heated from 11 oC to 32oC using 14,530 Joules?

A: Given : q = 14530 j

Q: Explain how alcohols and phenols are prepared to be used as  disinfectants. Answer in 2-3 sentences ...

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Q: Assuming ideal solution behavior, what is the molar mass of a protein if a solution of 0.02 g of the...

A: given :-  mass of protein = 0.02 g  volume = 25.0 mL  osmotic pressure = 0.56 torr  temperature = 25...

Q: 14. A student wants to determine the concentration of a AgNO3 solution. 200.0 mL of the AgNO3 soluti...

A: Calculate concentration of AgNO3 in term of Molarity...

Q: 11. Cro, 12. Ва(С, Н, О,), 13. ICI, 14. РbS, 15. Са, РО,), по

A: Here we have to determine whether the given compounds are binary or not, covalent or ionic compound,...

Q: Vanadyl trichloride (VOCl3) is a liquid that is used as a catalyst in the manufacturing of batteries...

A: Given data : Mass of VOCl3 = 21.34 g Molar mass of VOCl3 = 173.3 g/mol melting point: -77°C  boiling...

Q: For a 0.00554 mol sample of H2 and a 0.00912 mol sample of N2, total pressure is 23.44 torr. What is...

A: Given, moles of H2 = 0.00554 moles Moles of N2 = 0.00912 moles Total pressure, pT = 23.44 torr

Q: Predict the products for each of the following reactions and provide an explanation for the stereoch...

A: Diels-Alder reaction: The Diels–Alder reaction is a pericyclic reaction (cycloaddition) between a co...

Q: Construct the expression for Kc for the following reaction. 3 NO(g) = N20(g) + NO2(g)

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Q: A nonvolatile solute is dissolved in benzene so that it has a mole fraction of 0.147. What is the va...

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Q: If a buffer solution is 0.410 M in a weak acid (K, = 5.9 x 10-6) and 0.210 M in its conjugate base, ...

A: Note : Since you have posted multiple questions, we are entitled to answer the first only. Please re...

Q: Identify the type of reaction using the following abbreviations: C = Combustion; D Decomposition; %3...

A: Given,  Mg(s) + 2HNO3 (aq) -------> Mg(NO3 )2 (aq)+ H2 (g)  The type of the reaction is:

Q: 1. What chemical reaction was performed to study the effect of temperature on the reaction rate? Sho...

A: Rate of reaction depends upon - the concentration of reactant, temperature, pressure, physical state...

Q: Find the oxidation number for each element in the following substance. Br2  1. Br =

A: Given :- chemical formula of substance = Br2  To identify :- oxidation no. of Br in Br2

Q: Perfect gas AS = nR ln(V/V,) Entropy of isothermal expansion

A: To prove this equation , we would use law of thermodynamics and perfect gas law. 

Q: The bombarded fragments forms a radical is represented by a mass charge ion ratio  known as (_)?   ...

A: In mass spectrometry,  a molecule is ionised and fragments are created on the basis of m/z. 

Q: calc . the equilibruim concebtration if k = 1.2 x 10^-5 4 If 0.50 mol of NO, is placed in a 2.0L fla...

A: If 0.50 mol of NO2 is placed in a 2.0L flask to create NO and O2 calculate [if keq = 1.2 x 10-5.  

Q: Calculate the actual dissolve oxygen (DO) at a downstream location of 1500 m in a river from a waste...

A: We have find out actual dissolve oxygen.

Q: Write the charge of each ion using the format +1 or -1. You must put a positive or negative sign Wha...

A: Write charge of each ion of the following---  

Q: Experimental value: 0.010 mol/L Literature value: 0.00798 mol/L What might cause the solubility to d...

A: Two major factors affecting solubility are- 1. Temperature 2. Pressure

Q: does the substituent F __ have an electron withdrawing-effect, or a electron-donating effect?

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Q: in analysis of copper, the cathode of hollow cathode lamp is a? -Zinc -Tungsten -Lead -Copper

A:                                 Answer in analysis of copper, the cathode of hollow cathode lamp is ...

Q: At a certain temperature, the solubility of strontium arsenate, Sr,(AsO,)2, is 0.0630 g/L. What is t...

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Q: Draw a bar diagram on your sketch paper based on the table below and determine the non-carbon hardne...

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Q: Use the Bond Energies Table to estimate the enthalpy change in the following gas-phase reaction. (Hi...

A: CH4 + 2O2 --> CO2 + 2H2O Values of bond energy is not provided in image .the values taken here fr...

Q: What is the retention factor of a sample when after injectiion the void time (tM) took 4.18 sec? The...

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Q: When K2S is added to a saturates solution of FeS, what happens to the solubility of FeS? (a) More F...

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Q: If 3.21 mol of a gas occupies 56.2 Lat 44 °C and 793 torr, 5.29 mol of this gas occupies __________ ...

A: Given :-  Initial moles = 3.21 mol Initial volume = 56.2 L  Final moles = 5.29 mol  To calculate :- ...

Q: Q.1(a) Outline the retrosynthetic analysis and the designed synthesis of the following target molecu...

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Q: The following model represents the carbocation intermediate formed in the addition reaction of HBr t...

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Q: which significant information can be provide by the mass spectra? identity of the compounds molecul...

A: mass spectrometers can be used to identify unknown compounds via molecular weight determination, to ...

Q: gas (pure or mixture) 1 solute P/P(o) solvent c/c(o) pure solid or liquid

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Q: 6. To study the reaction between ammonia and oxygen, 4NH3(g) + 702(g)52N2O4(g) + 6H2O(g), A flask wa...

A: Given that , initially concentration of [NH3] = 2.40M [O2] = 2.40M And at equilibrium ,  [N2O4] = 0....

Q: pH for the 0.1000M acetic acid (HC2H302) = 2.93

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Q: In the following acid-base equilibrium, which one of them are acid, base, conjugate acid and conjuga...

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Q: 1. Quantum leap is the phase where electrons tend to jump from one orbit to another. 2. Ther...

A: * Electron is considered as quantum in quantum chemistry.

Q: A buffer solution is 0.357 M in H2 C204 and 0.399 M in NaHC204. If Kal for H2 C204 is 5.9 x 10-2, wh...

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Q: Vanadyl trichloride (VOCI3) is a liquid that is used as a catalyst in the manufacturing of batteries...

A: The mass of vanadyl trichloride is = 15.73 g The heat of vaporization of vanadyl trichloride is = 36...

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.