What is the minimum mass of magnetite Fe3O4 , a iron ore, from which  1.0kg  of pure iron could be extracted?

Q: Part A Calculate the concentration of an aqueous solution of NaOH that has a pH of 10.87. Express…

A: Given - 1->pH=10.87 Concentration of aqueous solution of NaOH=? 2-> Conjugate acid of base…

Q: 12.0 10.0 8.0 pH 6.0 4.0k 2.0 00 B C D 05 10 15 20 25 30 mL of 0.1 M NaOH The graph above shows the…

A: The stronger the acid, lower is its pH.

Q: In the laboratory, a general chemistry student measured the pH of a 0.473 M aqueous solution of…

A: Given that,  The concentration of an aqueous solution of ammonia is C = 0.473 M. The pH of this…

Q: ▼ Part A Calculate the equilibrium concentration of H3O+ in the solution if the initial…

A: The 1st part (Part-A & Part-B) answers are given below:

Q: HI can react to form hydrogen and iodine as shown in the reaction below. When this occurs a small…

A: The balanced chemical equation is: 2HI(g) → H2(g) + I2(g)  Number of gaseous moles on the reactant…

Q: Macmillan Learning Organic Chemistry Maxwell presented by Macmillan Learning Select the correct…

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Q: m 2 Which of the two models can be used to describe the vibrations of a diatomic molecule? Explain…

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Q: Which electron configurations of neutral atoms represent excited states? [Kr]5s¹4d5 [Xe]6s²4f¹…

A: we have to select the electron configurations that represent excited states

Q: A solution containing 0.15 M Pb²+, 1.5 × 10¯6 M Pbª †, 1.5 × 10-6 M Mn² +, 0.15 M MnO4, and 0.85 M…

A:

Q: how do we determine the ph of weak acid?

A:

Q: Give the conjugate acid of the following Bronsted-Lowry bases. (Type your answer using the format…

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Q: So why do we use counting words instead of numbers?

A: Counting words instead of numbers have either advantages or compulsions.  Counting words like pairs,…

Q: Question 19 of 23 > obtained when 6.75 mol FeO reacts with an excess of CO? Macmillan Learning FeO +…

A: Given -> 1-> FeO  + CO -----> Fe + CO2 mole of FeO = 6.75 mole  2->  6HCl + 2Al ---->…

Q: many SC mmonium bromide sh e added to 1.00 L of a 1 ammonia solution to repare a buffer with a…

A:

Q: Macmillan Learning Use the van der Waals equation of state to calculate the pressure P of 3.40 mol…

A:

Q: Complete and balance the following half-reaction in basic solution. Be sure to include the proper…

A: We know in a balanced chemical equation there is conservation of mass , number of atoms and charges…

Q: A buffer solution contains and 0.486 M CH3NH2 (m Determine the pH change is added to 1.00 L of the b…

A:

Q: structure of the molecule. As you solve the structure, keep the following questions in nd: What is…

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Q: 4) what is the a method you can use to remove an impurity? When will your method work or not work?

A: To mention the method that can be used to remove an impurity from the given reaction mixture.

Q: Macmillan Learning If a gaseous mixture is made by combining 4.66 g Ar and 4.71 g Kr in an evacuated…

A:

Q: (S) violet light has 4/5 nm. @ what is the frequency? Frequency - [7.22 x 10" S (b) Calcolate Energy…

A: Given: wavelength of light = 415 nm

Q: 2. Calculate K for each of the following reactions N₂O4 (9) a. b. C. + 3 H₂ (9) N₂ (9) + N₂ (9) + O₂…

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Q: For the chemical reaction shown, 2H₂O₂(1) + N₂H₂(1) - 4H₂O(g) + N₂(g) determine how many grams of N₂…

A:

Q: What is the ratio strength (w/v) of an isotonic solution for zinc sulphate SCE 0.15? A. 1 in 16.7 B.…

A: The NaCl concentration of blood is 0.9 % w/V Hence for a solution to be isotonic it should have 0.9…

Q: What are ALL of the products of buta-1,3-diene and bromine water? I know how to get to the major…

A:

Q: What volume of carbon dioxide (in L) will 3.68 g of antacid made of calcium carbonate produce at…

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Q: Write a balanced chemical equation and the net ionic equation for the process where aqueous calcium…

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Q: A mixture of 50 mL of 0.100 M NH3 and 50 mL of 0.100 M NH4Cl will result in A buffer. True False A…

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Q: One question with three parts

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Q: What is the IUPAC name for the molecule shown below? CI (4R,5Z)-4-chlorohept-5-en-2-yne…

A: IUPAC name can be given to the the structure by following IUPAC nomenclature rules.

Q: The combustion of ethane (C₂H₂) produces carbon dioxide and steam. 2C₂H₂(g) +70₂(g) → 4CO₂(g) +…

A:

Q: 1) A solution of Sn(NOs)2 of unknown concentration can be titrated with a solution of acidified KMnO…

A: The answer is given below:

Q: The key to understanding atmospheric structure lies in in­teractions between atmospheric gases and…

A: The energy or frequency of electromagnetic radiations in increasing order is: Radio waves < micro…

Q: The vapour pressure of a condensed phase a. remains the same b. increases C. decreases as pressure…

A: Answer  Vapour pressure of liquid varies with temperature only  So…

Q: What are the products of the neutralization reaction below between an acid and a base found in an…

A: Antacid contains a basic compound which produces hydroxide in aqueous solution i.e. a base. Here…

Q: Question 1 If an octahedral iron(II) complex is paramagnetic, which of the following sets of…

A: Given: An octahedral iron (II) complex is paramagnetic. We have to find the correct condition to…

Q: The standard cell potential E°(cell) is +0.77 V for the redox reaction 2 Fe³⁺(aq) + H₂(g) → 2 H⁺(aq)…

A: Here we are required to find the standard potential for the half reaction.

Q: What is the value of the gas constant, R, in units of (mmHg⋅cm^3)/(mol.K)  a) 6.236 × 104 b) 0.1080…

A: One atm of pressure is equal to the 760 mm Hg of pressure

Q: There is not an experimental method to determine the mass of a gaseous product. True False Answer…

A: We need to find the given statement is true or false. The statement is, There is not an experimental…

Q: لود q Br MgBr (xs), CH3CH₂OCH₂CH3 2. 2. HCI, H₂O 1. NaBH4 (0.25 eq.), H₂O MgBr (1 eq.),…

A: The given problem involves the interconversion of organic functional groups by using wide variety of…

Q: When 0.257 g of sodium metal is added to an excess of hydrochloric acid, 2670 J of heat are…

A: Given amount of sodium metal reacts with excess of hydrochloric acid produces 2670 J of heat.we are…

Q: CI 1. Mgᵒ, CH₂CH₂OCH₂CH3 2. CO₂ 3. HCI, H₂O

A: Given reaction: We have to find the product of the reaction.

Q: Draw the major product from this reaction. Use wedge and dash bonds to indicate relative…

A: -> Alkene can be converted to cyclopropane in presence of CH2I2/Zn/Cu . -> It is Simmons Smith…

Q: Part I (Quantitative): a substitution reaction using the tertiary diol below will produce a product…

A: Guideline message: In case of multiple questions, ideally the first question is answered as per the…

Q: What is missing in the nuclear reaction shown below + An 1 0 10 5 4 B + He→> 2 O 14 7 O 13 7 O 13 7…

A:

Q: 53.5 mol of an ideal gas occupies 79.5 L at 311 K, what is the pressure of the gas? pressure: atm

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Q: Show with appropriate net ionic equations how Cr3+ and Cd2+ can be removed from wastewater by…

A: Introduction to Net Ionic Reaction- The chemical equation known as the net ionic equation only…

Q: Z: N

A:

Q: Water hardens experiment: Results: Sample A: 426.3 ppm Sample B: 18.9 ppm Sample C: 354.9 ppm Based…

A: Water hardness of Sample A: 426.3 ppm Sample B: 18.9 ppm Sample C: 354.9 ppm 1) Tap water: As the…

Q: Select all of the correct statements about equilibrium from the choices below. At equilibrium the…

A: The given problem is based on the concepts of chemical equilibrium.

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.