A student determined that the mass of four pennies was 18.5grams. Use this information to calculate the number of pennies in a box that contains 3.5pounds of pennies. Rouund your answer to the nearest whol

Q: The following data were collected at 25°C for the reaction of nitrogen dioxide with ozone which is o...

A:

Q: What is the formula for iron (II) nitrate? Hint: for CO2, write CO_2

A: To write Formula for iron (II) nitrate:    Symbol of Iron = Fe   Nitrate is a polyatomic ion with mo...

Q: 8. Assume that the following exchangeable cations are present in a 25 gram sample of a soil Cation С...

A: The solution of the question is given below:

Q: 4. Provide a synthetic route for each of the target molecules below, starting from the given startin...

A:

Q: Agent Precipitate Precipitate Ag+ Insoluble Dilute HCI chlorides Insoluble chlorides Pb2+ Dilute HCI...

A: We have to find the formula of the precipitate and color of precipitate.

Q: Element Molar Mass (/ 14.01 16.00 24.31 32.07 55.85 1. The molar mass of sulfur is 32.07 s/mol. This...

A:

Q: Complete the following solubility constant expression for CaF2. K sp

A:

Q: Consider the following Cu(II) complexes and place them in order of increasing stability. Fully justi...

A:

Q: Classify the following compounds as chiral, achiral (but not meso), or meso. H HO. 1st structure: ac...

A: Chiral compounds are those which have non-super imposable mirror image. For identification of chiral...

Q: depicted in the reaction scheme is the one used to form the semicarbazone and not the other NH2 grou...

A:

Q: In the test for ammonium (NH4+) ion, why should you take care that the litmus paper is not wet with ...

A:  ammonia gas can be detected by its pungent odour (it smells a lot like cat pee) and it will turn da...

Q: For H3PO4, Ka1 = 6.9 x 10-3, Ka2 = 6.2 x 10-8, K,3 = 4.8 x 10-13 What is the pH of a 0.13 M solution...

A:

Q: Balance the following reactions and classify each reaction. i. Al (s) + O2 (g) --> Al2O3 (s) ii. Fe2...

A: According to the Law of conservation of mass " all atoms of different elements must be equal on both...

Q: For a 0.450 mol L-1 solution of formic acid (HCOOH) answer the following questions. The Ka of formic...

A:

Q: Select all of the elements that are members of the alkaline earth metals. calcium chlorine strontium...

A: Answers are written below

Q: Complete the following solubility constant expression for Ag, CrO4. K. sp

A: Write solubility expression for Ag2CrO4 --

Q: Carbonic acid CHe Cog) react in water to produce Hso" according to Pe cquation. cag) a) Determine Th...

A: Given reaction: H2CO3(aq) + H2O(l) ⇌ H3O+(aq) + HCO3-(aq) We have to determine the acid, base, conju...

Q: What would happen to an individual if the hydrogen ion concentration in their blood were to suddenly...

A: If the hydrogen ion increases in the blood of an individual then the pH level of the blood will decr...

Q: View Poličiėš Current Attempt in Progress A 53 kg person walking 5.7 km/hr requires 997 kJ of energy...

A: Energy required to walk 5.7km = 997 kJ 1 kJ = (5.7 /997 )km  

Q: What volume in L of a 0.724 M Nal solution contains 0.405 mol of Nal ?

A: Given, Molarity of NaI solution = 0.724 M = 0.724 mol/L moles of NaI in the solution = 0.405 mol Vol...

Q: 3. There are several methods for preparing alkenes. A Wittig reagent was used in this experiment. Tr...

A:

Q: A1 liter solution contalns 0.403 M acetic acid and 0.537M potasslum acetate. Addition of 0.201 moles...

A: Given data : Moles of acetic acid = Concentration × Volume = 0.403 M × 1 L = 0.403 mol Moles of pota...

Q: Which of these statements is true? As wavelength increases frequency decreases. II. As energy increa...

A: The wavelength and frequency relation is described below  Wavelength = speed of light / frequency He...

Q: What is the relationship between absorbance and the shift in equilibrium?

A: According to Le-chatelier's principle, if any type of stress is applied at equilibrium, then equilib...

Q: How many grams of oxygen are required to react with 25.8 grams of lead sulfide

A: Given, 25.8 grams of lead sulfide reacted with oxygen.

Q: A 1.00 L buffer solution is 0.200 mol L-1 in C6H5COOH and 0.250 mol L-1 in C6H5COOLI. The Ka for C6H...

A:

Q: How many grams of solld ammonium chloride should be added to 0.500 L of a 5.15x10-2 M ammonla soluti...

A: Given,  Molarity of  ammonia = 5.15 × 10-2 M.  Volume = 0.500L. The pH of the buffer is 8.730  The m...

Q: 2. · Both CCI4 (carbon tetrachloride) and CS2 (carbon disulfide) are liquids used as solvents in spe...

A: Given reactions:

Q: E)Calculate the enthalpy for the combustion of 1.0 mol CH4, at 25 °C and 1 atm. AH° (kJ/mol) CH4(g) ...

A: CH4(g) + 2O2(g)----> CO2(g) + 2H2O(l)  

Q: Question 11 The following test data were obtained for an aqueous solution of calcium chloride. Mass ...

A:

Q: Binary Covalent Polyatomic or ionic or ion? name If ionic, charge on the cation formula acid Formula...

A:

Q: Chemical Equilibrium ) Consider the following reaction occurs: 3 Al;Cle (g) D 2 Al,Cl, (g) a) In an ...

A:

Q: In a cationic exchange reaction, how many grams of K+ will replace 1 gram of Са?

A: In cationic exchange reaction, 2 moles of k+ will replace Ca2+ (because k has 1 positive charge and ...

Q: Provide the IUPAC name for the condensed structural formula shown here. CH2 CH CH3 CH2-CH2 | H3C „CH...

A: In this question, we have to give the IUPAC name of the given compound

Q: he change of the entropy for a process of dissolving the polymer in certain solvent is S = -0.07- mo...

A:

Q: Please research the following and reference your sources: 1. The environmental impact of disposing o...

A: Question 1 - - > Environmental impact of disposing of plastics -  Long-term use of plastics and p...

Q: What is the line structure and structural formula of 2-bromo-3-ethyl hexanal?

A: line structure and structural formula of 2-bromo-3-ethyl hexanal 

Q: How many milligrams of solute are there in 100 uL of a 50mM NaCl solution (MW 58.44 g/mole)? Show yo...

A: Mass of solute required to prepare 100 uL of a 50mM NaCl solution is given below

Q: A student carried out a similar experiment to the one in this lab, but used a hydrate of cobalt (II)...

A: * To determine % error, you will require previously determined value of n also. Then, % error = Prev...

Q: What is wrong with the Lewis structure depicted below? [Image description: A Lewis structure with a ...

A: The Lewis structure given is,  

Q: Calculate the energy for each level of the H and He". HYDROGEN Orbit Energy N= 1 n=2 n =3 n = 4 N =5...

A: We have to calculate the energy for each level of the H and He+ in this question:

Q: 8. Glycolysis involves ten biochemical reactions. The first two reactions of the glycolysis cycle ar...

A: Given that, two reactions are given below (1) C6H12O6(aq) + ATP(aq) ↔G6P(aq) + ADP(aq), ∆H1 = -19.74...

Q: Points to discuss: • Discuss the relationship between the concentration of the standard solution and...

A: Points to discuss: • Discuss the relationship between the concentration of the standard solution and...

Q: Which one of the following is an aromatic co CH,CH2CH=CHCH3 H-C-OH HO A B O A O B OC

A:

Q: 2) Provide plausible stepwise mechanisms using curved arrow notation to explain the elementary steps...

A:

Q: P = P2O5 × 0.44 P2O5 = P × 2.29 K = K2O × 0.83 K2O = K × 1.21 1 tonne = 1,000 kg 1 ha = 10,000 m2 Us...

A: Given that, P = P2O5 × 0.44 P2O5 = P × 2.29 K = K2O × 0.83 K2O = K × 1.21 1 tonne = 1,000 kg 1 ha =...

Q: The following IR spectrum corresponds to which compound? Explain. Tranamittance, %

A: Given IR data : 2969 cm-1 belongs to sp3 C-H Stretch of alkane 1715 cm-1 belongs to C=O stretch of ...

Q: 11. Cro, 12. Ba(C,H,02)2 13. ICI,

A: Please find the below attachment.

Q: If 25.0 mL of 0.18 M methylamine (CH3NH2) (K = 4.4 x 10) is titrated with 0.048 L of 0.70 M HBr, the...

A: Since you have posted multiple questions, as per our company guidelines we are supposed to answer on...

Q: What is the predicted major product for the reaction shown? Fuming H,SO, ÓCH3 SO;H SO3H SO3H осн ÓCH...

A: ->OCH3 is electron donating group due to +R effect it is ortho ,para directing. ->CH3 is elect...