Cobalt(II) chloride forms several hydrates with the general formula CoCl2 ·x H2O , where  x  is an integer. If the hydrate is heated, the water can be driven off, leaving pure  CoCl2  behind.   Suppose a sample of a certain hydrate is heated until all the water is removed, and it's found that the mass of the sample decreases by 22.% . Which hydrate is it? That is, what is  x

Q: 1. The gas-phase reaction between methane and diatomic sulfur is given by the equation CH₂(g) + 2…

A: Given, CH4(g) + 2S2(g) ----> CS2(g) + 2H2S(g) Rate constant (k): k1 = 1.1 L/mol.s k2 = 6.4…

Q: 3.50g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A:

Q: For the denitrification [microbiological conversion of nitrite/nitrate (N-containing contaminants)…

A:

Q: The ionic compound, Csl, forms a body centered cubic structure where the anions occupy the corners…

A:

Q: A proposed mechanism for the decomposition of T₂L5 is as follows: slow step T₂L51 TL₂+ TL3 fast step…

A: A chemical reaction can be added or subtracted like an algebraic equation. The given reaction…

Q: If no reaction occurs leave all boxes blank and click on "submit". Predict if a reaction will occur…

A:

Q: 1. Which of the following reactant pairs will produce a double replacement reaction? a. b. Mg(s) +…

A:

Q: Give the chemical name 1. CH3 - CH - CH - CH2 - CH - CH3 2.…

A: The naming of an organic compound can be done with help of rules of international union of pure and…

Q: What is the pH at the equivalence point when you mix 20mL of 0.1M of some acid with 40mL of 0.05M of…

A:

Q: Benzyl amide and benzyl alcohol NH₂ benzyl amine aOH OH benzyl alcohol

A:

Q: 14 Which chemical formula is correct Magnesium Selenide? C. Mg2Se3 D. Mg4Se₂ A. MgSe B. Mg₂Se 15…

A:

Q: please solve step by step. Water vapor can be divided into hydrogen and oxygen at the same…

A: Increment in Internal Energy ...?

Q: The activation energy for a reaction is 552.3 kJ. The rate constant at 51.9ºC is equal to 1.21 x…

A:

Q: What is the Kb for the conjugate base of an unknown acid with a Ka of (5.3x10^-3) Note: Your answer…

A:

Q: Part 1: Make Calibration Standards Data and Calculations 1. Mass of the NaCl added to the 100-mL…

A: The solution B , C and D are made by diluting solution A. So we can use dilution law to calculate…

Q: In order to determine the point group of a molecule, a thorough understanding of their molecular…

A:

Q: How many moles are in 10.0 g of KBr?

A: Answer: 1 mole of a sample always contains 6.022×1023 units and mass of 1 mole quantity of each…

Q: When 9.00 g of a diprotic acid are dissolved in water and titrated with 4.20 M NaOH, it requires…

A: Given - Weight of diprotic acid =9.00 gram  Concentration of NaOH=4.20M  Volume of NaOH= 47.6mL =…

Q: Safety: While these are household items that you could easily purchase at the store, please…

A: #Q.1:  Your calculation for #Q.1 is correct which is 7.95 g

Q: The ligand bpy forms complexes with Ru³+ and Ru²+. The standard potential of the couple is +1.26 V.…

A: Given The ligand bpy complex with  [Ru(bpy)3]^3+ / [Ru(bpy)3]^2+ E° = + 1.26 V

Q: In order to understand how this equation is derived and why it holds true, the product of each side…

A:

Q: Consider the following reaction at 298 K: 4 Fe(s) + 3 O2(g) → 2 Fe2O3(s) Suppose 150 g of iron…

A: The balanced equation is: 4 Fe(s) + 3 O2(g) → 2 Fe2O3(s) ; ∆Ho = ??  First, we have to find the…

Q: True/False: The DNA strands run antiparallel from the 3' phosphate to the 5' hydroxyl to make the…

A: DNA stand from Deoxyribonucleic acid

Q: Endocytosis and exocytosis are both forms of [ACTIVE / PASSIVE ] transport that [ DO / DO NOT ]…

A: Endocytosis is the process of capturing a substance or particle from outside the cell by engulfing…

Q: How many grams of cobalt are required to produce 32.51 g of cobalt(II) bromide trihydrate? The molar…

A: Here, we have to calculate the mass of cobalt that is required to produce 32.51 g of cobalt(II)…

Q: Determine AG for the following reaction: CO₂(g) + 2H₂O(1) CH4(g) + 202(g) Substance AG(kJ/mol)…

A:

Q: Na OC₂H5

A:

Q: Which isomer of 1-tert-butyl-3-ethylcyclohexane would you expect to be more stable?

A:

Q: 3.43 Identify the more stable stereoisomer in each of the following pairs, and give the reason for…

A:

Q: 2. What is the percent error in a measurement of the boiling point of naphthalene (C10Hs) as 231.0…

A: The percent error of an experiment is calculated as follows: For the given experiment the values…

Q: There are 20 amino acids that regularly occur in organisms. What makes each of them unique? the long…

A: The answer to the following question is- Amino acids are organic compounds containing the basic…

Q: Draw the organic molecule(s) which is(are) formed in the following reaction. Do not include…

A: When acid compound is treated with SOCl2 then acid chloride end product formation takes place. Now…

Q: A 7.98 g sample of an aqueous solution of nitric acid contains an unknown amount of the acid. If…

A: Given - mass of aqueous solution of nitric acid = 7.98 g             molarity of sodium hydroxide =…

Q: Draw the propagation steps of the bromination reaction of cyclobutane to its mono-brominated…

A: Given : bromination reaction

Q: The activation energy for a reaction is determined to be 389.9 kJ. The rate constant at 20.5ºC is…

A:

Q: Using equation E0 = (0.0592 V / n) x log K   If you choose an electrochemical reaction that…

A: Here we are required to find the value of equilibrium constant K

Q: Balance the following chemical equations and write the net ionic equation for each reaction: “If…

A: Balanced chemical equation:  balanced chemical equation is the reaction in which number of atoms of…

Q: Why ionic compounds are soluble in polar solvents? On the other hand, covalent compounds are soluble…

A: Ionic compounds are the ones which dissociates into respective ions upon dissolution while organic…

Q: 5. Which salt is least soluble at 40°C?

A: Solubility curve-

Q: Draw the Lewis structure for CO₂ (C is the central atoml O =c;

A: Lewis’s structure: Lewis’s bonding theory is based on the octet rule. The Lewis structure is a…

Q: Which of the following increases the solubility of a gas in solution? increasing gas pressure and…

A: There are various factor which can influence the solubility of the gas in the solution-  1-…

Q: Blue fluorescent dye that identifies DNA. Heoscht Stain Fluorescence Insitu Hybridization O Giemsa…

A: Fluorescent chemical is a compound that can re-emit light upon excitation of light. Fluorescent dyes…

Q: ОН OH IZ NaHCO3 (5%) H2O NaHCO3 (5%) H2O N.R. O Na OH + CO₂ + H2O

A: The given reactions can be used to distinguish the basic strength of bicarbonate . Bicarbonate being…

Q: 6. Supply mechanisms for the following reactions showing all intermediates, all formal charges and…

A: #6: (a): The reactant is an alkene that is right in Pi-electron. HBr undergoes addition reaction…

Q: 3. If you use 10.0 mL of the Sodium Carbonate solution and an excess of Calcium Chloride, how many…

A: Answer-3 This question is based on the concept of limiting reagent. Limiting reagent is the reactant…

Q: Consider the decomposition of methanol, as follows. 2 CH3OH(l) → 2 CH4(g) + O2(g) Suppose 200.0 mL…

A: Here given that, The volume of methanol = 200.0 mL The density of methanol = 0.792 g/mL Then mass of…

Q: OKINETICS AND EQUILIBRIUM Calculating the reaction rate of one reactant from that of another Most of…

A:

Q: D Draw the condensed structural or line-angle formula for the aldehyde or ketone formed when each of…

A: In the oxidative of alcohols, hydrogen atoms are removed .  The primary alcohols produce aldehyde…

Q: 3. Write the letter of the term that correctly completes the sentence. Elements are different…

A: 1.Atom contains electron , proton , neutrons.  2. Nuclei contains  proton and neutron .

Q: What charge does a neutron carry?

A: Neutron are neutral in nature hence neutron carry zero charge or no charge

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".