What is the mass of 4.50 x 1022 Cu atoms? Multiple Choice O 4.75 g O 63.55 amu O 63.55 g O 7.47 x 102 amu O 747 x 1029

Q: If 2.00 mL of 0.900 M NaOH are added to 1.000 L of 0.450 M CaCl,, what is the value of the reaction ...

A: NaOH and CaCl2 reacts together to form NaCl and Ca(OH)2. So, 2 NaOH + CaCl2 -> Ca(OH)2 + 2 NaCl  

Q: What are the metric prefixes from largest to smallest?

A: The metric prefixes  are shown below from the largest to smallest  Mega = 106 Kilo = 103 hecto = 100...

Q: 1. 3C2H5OH) + 2O2ig) 5CO2(9) + 2H2O(@) 2. 2NO2(9) 2NO(9) + O2(9)

A:

Q: ) Febrz + kzC0s 5) K2 C03+ Baliz CO(OH)3 + HNO3 + > #Cl and KOH to 9 HBr and Fe(OH)s ->

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

Q: Calculate: 1) Create a buffer solution of pH= 4.00 from 1M acetic acid (HA)and 1 M sodium acetate (N...

A: Answer: Buffer solution is the type of solution in which addition of small quantity of acid or base ...

Q: FORMULA QUESTION In one standardization trial, 0.069 g of potassium hydrogen phthalate were neutrali...

A:

Q: Name the following compound. Be sure to answer all parts.

A: To write the IUPAC Name 

Q: 4. What weight (in grams) of lactose (C12H22011 , MW= 342 g/mole) is required to prepare each of the...

A: Note: As per company policy we are supposed to attempt first three subparts only. Please repost othe...

Q: What is the molar solubility of NiS if the Ksp is 3.0 × 10-20? NiS(s) ⇌ Ni2+(aq) + S2−(aq)

A: Given,  NiS(s) ⇌ Ni2+ (aq) + S2- (aq)  The Ksp of NiS is 3.0× 10-20  The molar solubility of NiS is:...

Q: Which of the following processes is exothermic, given the following N2lg) + 202lg) - N204) AH"=9.67 ...

A: Any reaction that gains energy is endothermic while exothermic reaction looses energy. So, for exoth...

Q: Determine the empirical formula of a compound containing 2.76 g of silicon and 13.9 g of chlorine.

A: Given, mass of Si=2.76 g, molar mass=28 g mol-1 mass of Cl=13.9 g, ,molar mass=13.9 g , molar mass=3...

Q: A 22.0 g block of copper at 45°C absorbs 2.50 kJ of heat. Given the specific heat of Cu is 0.385 J/g...

A:                                       Answer  Calculate final temperature of the Cu        Q = m Cv ...

Q: order of elution of the three halocarbons with respect to: a) Molecular size alone b) Boiling point ...

A: Molecular size order :  Carbon tetrachloride (CCl4) > Chloroform (CCl3) > Dichloromethane (CCl...

Q: 2. A quart of water weighs 4.05 pounds Calculate: a. Mass in slugs b. Mass in kilograms С. Volume in...

A: Given mass in pound

Q: need help with making an ir spectrum Analysis for Cyclohexanol  that includes in a table: Ir absor...

A:

Q: 3. How many water molecules are in 2.00 liters of water? The density of water is 1.00 g/mL.

A: Density of water = 1.00 g/mL It means 1.00 mL water contains 1.00 g

Q: boron trifluoride: partial pressure: Your answer is incorrect. • Total pressure in tank: Your answer...

A:

Q: points? I. The end point of a titration is reached when the titrant and analyte are stoichiometrical...

A: Equivalence point is defined as the point where the concentration of titrant is equivalent to the co...

Q: A reaction in which A, B, and C react to form products is zero order in A, one-half order in B, and ...

A:

Q: What is the pH of 2.24 M HCI solution?

A: Given :- concentration of HCl solution = 2.24 M  To be calculated :- pH of solution

Q: Which of the following is the characteristic of London dispersion forces? A. The electron cloud of ...

A: London dispersion forces : It is a kind of intermolecular forces which results form formation of dip...

Q: i. 4-ethoxy-2-methyl-hex-1-ene j. 3-isopropoxy-butan-1-ol

A: Given,  i) 4-ethoxy-2-methyl-hex-1-ene  j) 3-isopropoxy-butan-1-ol 

Q: How is the solubility of oxygen in water affected by increasing temperature

A:                                   Answer    How is the solubility of oxygen in water affected by inc...

Q: How many subshells are in the n = 3 shell? subshells How many orbitals are in the n = 3 shell? orbit...

A: given :- n =3 (n is the principle quantum no.)  To find :-  number of subshells  number of orbitals...

Q: A penny has a mass of 2.50 g and the Moon has a mass of 7.35 x 10 kg. 22 Use this information to ans...

A:

Q: CH CH3 ON CH3 HNO, CH HSO, .CH CH NO2

A: ->If electron donating group present then ortho ,para product is major. ->If electron withdraw...

Q: The names and chemical formulae of some chemical compounds are written in the first two columns of t...

A: Ionic compounds dissolve in water to form cations and anions. In the aqueous solution, the concentra...

Q: Four unlabeled beakers in laboratory are filled with solutions of the following compounds: Na,S, Na,...

A: In the given problem we are provide with four unlabeled beakers consisting of any of the following s...

Q: Decide whether each molecule or polyatomic ion is polar or nonpolar. If the molecule or polyatomic i...

A: ★ F2 :  F2 is homonuclear diatomic molecule which is non polar . A homonculear diatomic molecule F2 ...

Q: 2. How would you carry out each of the following syntheses? Each may require more than one step.

A: Please see the attachment

Q: Ammonium perchlorate (NH,CIo,) is the solid rocket fuel used by the U.S. Space Shuttle. It reacts wi...

A: Mass of NH4ClO3 = 4.0 g MW of NH4ClO3 = 117.5 g/mol

Q: Please answer all (2)

A: True and False.,    

Q: . If Gallium-68 has a half-life of 1.13 hours, how much of a 10.0 mg sample is left after 5.69 hours...

A: 1.  given :-  initial amount of sample = 10.0 mg  half life of Gallium-68 (t1/2) = 1.13 hours  To ca...

Q: Exam What mass of C6H1206 (glucose) is needed to prepare 450. mL of a 0.650 M solution of glucose in...

A:

Q: 2. A gas sample is found to contain 39.10% Carbon, 7.67% Hydrogen, 26.11% Oxygen, 16.82% P, and 10.3...

A: Given amount of elements are as follows C = 38.10% H = 7.67% O = 26.11% P = 16.82% F = 10.30% Atomic...

Q: What is the pH of a 0.320 M solution of Ca(NO₂)₂ (Ka of HNO₂ is 4.5 × 10⁻⁴)?

A:

Q: Question 9 Which one of the following statements is FALSE? In a TLC experiment with amino acids, if ...

A:

Q: NaOMe OMe and MeOH Br reflux bu are trying to maximize the yield of the alkene product, but are stil...

A: The alkene product is an elimination product. To increase the selectivity of alkene product over sub...

Q: If ferric sulfide reacts with oxygen, how many moles of ferric sulfide is required to produce 6g of ...

A: 4FeS +7 O2 = 2 Fe2O3+ 4 SO2

Q: What is the pH of a solution with a hydrogen ion concentration of 4.70X10 6 M? Your Answer: Answer

A:

Q: What kind of solvent ingredients is usually used in the concentrations of 4-10 percent in skin care ...

A: Some chemical are used in skin care product ;some of their function is to soften the skin cell and l...

Q: What volume (mL) of a concentrated solution of sodium hydroxide (6.00 M) must be diluted to 200 mL t...

A:

Q: Which option correctly describes the reactants and products of a chemical reaction? The mass of...

A: In this question, we have to describes the correct statement about reactants and products of a chemi...

Q: Enter your answer in the provided box. When coal is burned, the sulfur present in coal is converted ...

A: Molar mass of S = 32 g/mol Moles of S = mass / molar mass = 2950g/(32g/mol) = 92.1875 mol The molar ...

Q: A 0.3423 g sample of pentane, C5H12. was burned in a bomb calorimeter. The temperature of the calori...

A: The heat released by the combustion of pentane is absorbed by the water and calorimeter.

Q: Consider the hypothetical cations, A' and C* and anions, B and D'. Calculate the AG when 20.0 mL of ...

A:

Q: What is the pH of a solution with a hydroxide concentration of 3.80X10-5 M

A:

Q: 5. Look at this figure from Blankenship's book, Molecular Mechanisms of Photosynthesis. You can see ...

A: To predict the hybridization state and shape of the particular carbon centre , one has to determine ...

Q: Which of the following is NOT true about equivalence point and endpoint? O a. The endpoint approxima...

A: Titration is a method to determine the concentration of an unknown solution by using the solution of...

Q: What is the Molarity of a hydrochloric acid solution that has a volume of 1800 mL and contains 441 g...

A:

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.