a. What is the mass of 1.94 x 1024 atoms of hydrogen? grams b. What is the mass of 3.99 x 1023 molecules of hydrogen? grams

Q: A metallic cube has a side length of 50.00 mm. It is composed of 33.49% of metal A and 46.95% of…

A: Given, Side length of metal cube , a = 50.00 mm=50×10-3 m

Q: Chlorhexidine gluconate is available in different products in concentrations of 4% w/v and 0.12%…

A:

Q: Use the images and symbols to determine the atomic number and mass number for each of these…

A: The given problems are based on the general properties of the elements.

Q: • Glass is formed by heating sand (silica) with sodium carbonate or calcium carbonate. The molten…

A: Pure substances consist of only one type of constituent particles that can be either elements or…

Q: Question 4 The reaction of zinc with aqueous hydrochloric acid has the following unbalanced…

A: unbalanced equation.   Zn(s) + HCl(aq) → ZnCl2(aq) + H2(g)

Q: a. Draw the structure of the compound based on its IUPAC name:…

A:

Q: 1.1.The lemon battery – a simple galvanic cell 1.2. Potassium iodide electrolysis – a simple…

A: A question based on electrochemical cell that is to be accomplished.

Q: When dispensing 50.0 mL of a volumetric solution using a 50 mL capacity burette, why should the…

A: Burets can be used to measure volumes upto 50ml with both precision and accuracy, because they are…

Q: A chemical reaction between 6.0 g of substance A and 8.0 g of substance B, yields exactly 14.0 g of…

A: The concept behind the question is equivalent relationship between two reactants.

Q: Question 56c OH CI Draw the structures of one pair of enantiomers for the above molecule. (Hint: You…

A: A question based on introduction to organic chemistry that is to be accomplished.

Q: Sulfur trioxide has no dipole moment (i.e. is not a polar molecule), but arsenic trifluoride has a…

A: Given : name of compounds

Q: Testosterone is an anabolic steroid. The structure of testosterone is shown below. What is the…

A:

Q: 1. How many moles of cobalt(III) sulfide, Co₂S3, are present in a sample that contains 4.11 moles of…

A:

Q: 1. Balance the following redox reactions using the half-equation method: CI¹+ Br₂ a. Cl₂ + Br¹- b.…

A: Given is  Asked is to balance below Redox reaction by half equation method.

Q: The pH of 300 mL solution made of 0.53 M acetic acid and 1.13 M potassium acetate is (Ka = 1.8 x…

A:

Q: You are performing a transesterification (lik 4) and need to get your reagents ready. You are…

A: Concept based on the usage of significant figures and their importance in dealing with mathematical…

Q: question 57 Draw the structure of the following compound: trans-1-bromo-2-chlorocyclohexane

A: In chair form of cyclohexane bromine and chlorine are present at axial position in trans form

Q: Balance the chemical equation below using the smallest possible whole number stoichiometric…

A: The Chemical reaction follows the law of conservation of mass. According to the law of conservation…

Q: 5. Calculate the normality concentration of 2g Sulfuric acid dissolved in 10mL water. 6. What is the…

A: 5. We know normality is  number of gram equivalent of solute dissolved per litre of the solution .…

Q: Select one: 1 O a. PCI 3 O b. H₂O O C. NO₂ O d. NH3 H 1.008 3 4 Li Be 6.94 9.012 5 11 12 Na Mg…

A:

Q: A newly discovered element lenium (Le) was determined to belong to group 16. What would be the…

A: A question based on molecules that is to be accomplished.

Q: a. Label with asterisks (*) all of the stereocentres in the molecule shown above. b. How many…

A: a.) The IUPAC name of the structure is 2-methylcyclohexanol. it has 2 chiral centers.

Q: What is the electron group geometry of BrO3- and why?

A: To determine the electron group geometry, first determine the valence electron then calculate steric…

Q: H 1.008 3 4 Li Be 6.94 9.012 12 Na Mg 22.990 24.305 11 19 K 39.098 37 20 21 Rb Sr 85.468 87.62 Ca Sc…

A: To find out the molecular geometry we have to calculate the hybridization. For all the species here…

Q: A 1.133 g sample contains only vitamin C (C, HO) and sucralose (C,H,C1, Oy). When the sample is…

A: Firstly calculate the molar mass of vitamin C(C6H8O6) and Sucralose(C12H19Cl3O8),  Molar mass of…

Q: A buffer solution contains 0.205 M NaHSO3 and 0.405 M K₂SO3. If 0.0321 moles of nitric acid are…

A:

Q: Which of the following compounds exhibits resonance? Select one:

A: Given : formula of compounds

Q: 1.0 ml culture O-2 O-3 O-4 0-5 0-6 0-7 O-8 P1 0-9 O-10 9.0 ml 1/10 10-1 0.1 ml P2 9.9 ml 1/100 10-3…

A: Initial volume of the culture used = 1 mL Total volume of culture for each case is 10 mL. With…

Q: What are the two chair conformers for this molecule and which one is more favorable?

A:

Q: Question 55c Complete these equations by drawing the structure of the missing reactants (2)and (3)…

A: -> Reaction of HI with alkene produce alkyl iodide . -> Reaction of Cl2 with alkene give anti…

Q: Which of the following molecular geometries cannot have a trigonal bipyramidal electron group…

A:

Q: 7. What example of an element that is considered diprotic base, monoprotic base, monobasic acid, and…

A: Diprotic, monoprotic and triprotic bases refer to the ability to neutralize number of H+ ions of an…

Q: A reactant decomposes with a half-life of 14.9 s when its initial concentration is 0.184 M. When the…

A: We have to find order of reaction  . Given initial  concentrations And half lifes .

Q: Which of the following statements is TRUE?

A: Given : four statements

Q: Choose from the conjugate acid–base pairs HSO4-/SO42-, HF/F- and NH4+/NH3 to complete the following…

A: Conjugate acid and bases are ions which are coming from an base and acid respectively after removal…

Q: How many sigma and pi bonds does Furfurylamine (C5H7NO) have?

A:

Q: Write the balanced neutralization reaction that occurs between H2SO4H2SO4 and KOHKOH in aqueous…

A: Answer:- This question is answered by using the simple concept of stoichiometry which involves the…

Q: A chemical reaction between 6.0 g of substance A and 8.0 g of substance B, yields exactly 14.0 g of…

A: In the first reaction, 6.0 g of reactant A reacts with 8.0 g of reactant B to produce 14.0 g of…

Q: H 1.008 3 Li 6.94 11 4 Be 9.012 12 Na Mg 22.990 24.305 5 6 13 8 NO B C F 10.81 12.011 14.007 15.999…

A:

Q: Without doing any calculations, match the following thermodynamic properties with their appropriate…

A:

Q: In the reaction shown above, identify which reactant is the nucleophile and which is the…

A: A question based on introduction to organic chemistry that is to be accomplished.

Q: What mass of Li3PO4 is needed to prepare 442. mL of a solution having a lithium ion concentration of…

A:

Q: Select the correct responses to all of the following questions. Which diagram best represents the…

A: Defintion of resonating structure : Resonance structures is nothing but group of two or more Lewis…

Q: The Lewis structure reveals a radical in which of the following species? Select one: O a. N₂0 O b.…

A: Lewis  structure  of following oxides of nitrogen are.

Q: CI mechanism: CH3NH₂ A elimination How do you do this E1 reaction everyone keeps responding…

A:

Q: Which of the following statements involving the properties of matter (physical or chemical) does NOT…

A: Physical property can be observed or measured without changing the identity of the substance.…

Q: 1 Select one: O a. H 1.008 3 Li 6.94 4 Be 9.012 10 sigma bonds, 6 pi bonds 6 8 10 B C NOF Ne 10.81…

A: formal Charge is calculated using following formula: FC=V-N-B2where V=number of  valence electronsN=…

Q: TABLE 12.1 Standard reduction potentials E* at 25 °C Half-reaction Strongest F₂(g) + 2e- oxidising…

A:

Q: A metallic cube has a side length of 50.00 mm. It is composed of 33.49% of metal A and 46.95% of…

A:

Q: H 1.008 3 Li 6.94 11 4 Be 9.012 12 Na Mg 22.990 24.305 19 20 21 22 Ca Sc Ti V K 39.098 40.078 44.956…

A:

Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.