Limestone is typically 50.0% (w/w) CaCO3. How many grams of CaCO3 are present in a limestone sample weighing 1.2 kg?

Q: Classify the following chemical reaction: K2S (aq) + Co(NO3)2 (aq) ⟶ 2 KNO3 (aq) + CoS (s)

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Q: Energy Photon E5 (n=5) E4 (n=4) E3 (n=3) E2 (n=2) E1 (n=1) How many possible electronic transitions…

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Q: How many unpaired electrons does Hg[Co(SCN)4] have? Group of answer choices 1 3 2 0

A: Given : Hg[Co(SCN)4]

Q: Starting with the chair conformer shown on the left, provide a potential energy plot for the…

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Q: Part 2: Charges. The atom becomes a monoatomic ion during an ionic chemical reaction. What is the…

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Q: Decide whether these proposed Lewis structures are reasonable. proposed Lewis structure :C=0: :Z: ||…

A: Lewis structure is the representation of valence electrons in the atoms of a molecule or ion. In the…

Q: D For each bond, show the direction of polarity by selecting the correct partial charges. Se-S 0-Se…

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Q: How many oxygen atoms are there in 52.06g of carbon dioxide?

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: Consider the following reaction. (a) Is the reaction exothermic or endothermic? exothermic…

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Q: Upload a drawing that shows the emission process. Please select file(s) Select file(s) Provide an…

A: Please find the below attachments.   Thank you

Q: The pOH of an aqueous solution at 25°C was found to be 11.00. The pH of this solution is The…

A: Since, pH value measure the acidity or basicity of the solution or compound. If pH > 7 then…

Q: Question 3 To make 50. mL of an acidic buffer solution with a pH of 3.6 and the weak acid being 0.10…

A: Answer:- This question is answered by using the simple concept of calculation of amount of acid and…

Q: 3. Thyroxine is a hormone secreted by the thyroid gland and has a formula of C, H, NO,1, How many…

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Q: What will happen if methane is being oxidized in a very clean environment, where NO is at very low…

A: Methylhydroperoxide (CH3OOH  is formed)

Q: A 15.25 gram sample of an organic compound was combusted in oxygen to produce 34.71 grams of carbon…

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Q: Suggest an explanation for the following observations. The carbonyl group of methyl salicylate…

A: Intramolecular hydrogen bonding :  It is special type of hydrogen bonding which acts within same…

Q: What is the energy of one mole of photons of radiation whose wavelength in 340 nm? Group of answer…

A: we have to calculate energy of one mole of photons given : wavelength = 340 nm

Q: ons should be shown of the back of Formula of the Hydrate Weight of Hydrate and Evaporating Dish…

A: Chemical formula of the hydrate is CuSO4.5H2O  Weight of hydrate = 10.884 g  Weight of water in the…

Q: A student performed a series of reactions using 18.5 g of magnesium metal. The expected percent…

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Q: proposed Lewis structure d=8: H-CIN : 0: 0= Is the proposed Lewis structure reasonable? Yes. No, it…

A: While drawing Lewis diagram, first we find the total valence electrons present in the species. The…

Q: Complete and balance the following equation then write the net ionic equation. Fe(NO3)3+ K3PO4 -->

A: Complete and balanced reaction is as follows: FeNO33aq + K3PO4aq →FePO4s + 3KNO3aq

Q: Which carbonyl compound is needed in Step 2 to produce the product alcohol below? H 1) NaNH: 2)?…

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Q: What mass of hydrochloric acid (in grams) can 2.9 g of sodium bicarbonate neutralize? (Hint: Begin…

A: Neutralization reaction :-  The reaction between an acid and a base is known as neutralization…

Q: ormula = Al₂(CO3)3 atom aluminum carbon oxygen number in formula

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Q: 2 NH ₂ (g) = N₂ (g) + 3H₂(g) K= (3.43 × 10-²) (4.28 x 10²3)³ (1.69 x 10-4)2 100

A: Since, Equilibrium constant or Kc is the ratio of the equilibrium concentrations of product over…

Q: The average atomic mass of copper is 63.546 amu. It is composed of copper-63 and copper-65 isotopes.…

A: Given : The average atomic mass of copper is 63.546 The natural abundance of copper-63 (62.9296 amu)…

Q: Cinchonine is more soluble in water when some acid (such as HC1 or H₂SO4) is added. Explain that…

A: Please find the below attachment.

Q: Which of the following cell has highest cell potential at 25°C? Given, (Ksp)AgCl 1 = 10-10,…

A: Given: Ecello of standard hydrogen electrode is zero.

Q: Macmillan Learning Given that K₂ for HClO is 4.0 x 10-8 at 25 °C, what is the value of Kh for ClO at…

A: Since, Multiplication between Ka and Kb is equal to Kw of water. So, Ka × Kb = 10-14 = Kw

Q: Identify each of the above structures as either achiral, chiral, or a meso compound. Structure a:…

A: Chiral or achiral or meso depend upon various things are as follow.

Q: Identify the reagents you would use to convert 1-bromopentane into ethyl hexanoate. 1-bromopentane →…

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Q: The complete reaction of 57.4 g of CaC2 requires consumption of __________ g of H2O.

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Q: One way in which voltaic cells differ from electrolytic cells is that Oxidation occurs at the…

A: Voltaic cells convert chemical energy into electrical energy. Electrolytic cells convert electrical…

Q: 20 Separation of a Mixture lanens?) 4) A mixture weighing 28.516 g contained 4.518 g NH4C1, 15.250 g…

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Q: What is the total spin quantum number (S) for any diamagnetic transition metal ion? Group of answer…

A: Spin quantum number: The orientation (rotation) of the electron spin (in space, is called the spin…

Q: Which of the following description(s) are improperly used related to the process of filtration?…

A: Filtration is the process in which solid particles in a liquid  are removed by the use of a filter…

Q: 1. A balloon is inflated to a volume of 2.50 L in a warm living room (240C). Then it is taken…

A: Note: As per our guidelines, we are supposed to answer only one question when multiple questions are…

Q: Complete the table below by writing the symbols for the cation and anion that make up each ionic…

A: An ionic compound is a chemical compound that is composed of positive ions (cations) and negative…

Q: Write the correct chemical formula for 0.075 M potassium phosphite

A: We have been given 0.075 M potassium phosphite.We are asked to write the correct chemical formula…

Q: of 15 > Chlorine gas can be prepared in the laboratory by the reaction of hydrochloric acid with…

A: Given, 4HCl(aq) + MnO2(s) → MnCl2(aq) + 2H2O(l) + Cl2(g) mass of HCl react = 44.5 g mass of MnO2…

Q: A certain weak base has a Kb of 7.10 x 10-7. What concentration of this base will produce a pH of…

A: The value of Kb for the given weak base is = 7.10x10-7 The pH of the solution is = 10.06 The…

Q: 1. In which of the following pairs do both numbers contain the same number of significant figures?…

A: Significant figure calculation- 1-Zero comes after decimal point and number is more than 1 then 0…

Q: Decide whether these proposed Lewis structures are reasonable. proposed Lewis structure H -C=N…

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Q: CH3CH2CH2CH2CH2CH2NH2 Н H-C н Н н н CH3 с-с-н I I HN H CH3 нн он н-с-с-о-с-с-н II нн H₂C²-CH₂ I н нн…

A: Bond line structure (bond line formula , skeletal structure,skeletal formula) is a representation of…

Q: What is the wavelength, in nm, of light containing 273 kJ/mol of photons? Indicate on your written…

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Q: What is the percent of calcium are in Ca3(PO4)2?

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Q: Rank the following atoms in order of increasing Atomic Size: In, Ga, Sr, S, Cs

A: The periodic table of the elements is a tabular representation of the chemical elements in rows…

Q: [Review Topics] [References) Use the References to access important values if needed for this…

A: Here we are required to find the equilibrium constant for the given reaction.

Q: What is the product(s) for the following reactions

A: Organic reactions are those in which organic reactant react to form organic products. In the given…

Q: the reaction, 2 N2(g) + 5 O2(g) → 2 N2O5(g) The rate of disappearance of N2 is 0.373 M/min. What…

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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".