3- a particular body of the material or a alloy ch composition is (are ) recognized as - a. Alloy b. System c. Both a and b d. None of the above

Q: If an air conditioning unit is charged with 7.0x10^22 molecules of R-113 (C2Cl3F3), what mass of thi...

A: Given : Number of molecules of C2Cl3F3 = 7.0 X 1022   

Q: A thin-layer chromatography (TLC) experiement was run using three compunds: benzophenone, benzhydrol...

A: A thin-layer chromatography (TLC) experiment was run using three compounds: benzophenone, benzhydrol...

Q: In terms of mass, calculate the percentage of the active ingredient for each of the following medica...

A: Mass percentage is defined as the total mass of the substance( here active ingredients) divided by t...

Q: Please help me understand how to do this

A: Combustion is the process of burning, an organic compound on combustion gives carbon dioxide and wat...

Q: When ethoxybenzene is treated with a mixture of nitric acid and sulfuric acid, two products are obta...

A:

Q: NH3, NHF2, NF3  which has the highest enthalpy of vaporization? Which has the highest vapor pressure...

A:

Q: Figure shows key steps in the metal-catalyzed (M) hydrogenation of ethylene C₂H₄(g)+H₂(g) →C₂H₆(g):...

A: The adsorption of hydrogen gas, H­2, on the surface of metal takes place.

Q: An amount of coffee with a mass of 244 g is left in an open plastic cup and is allowed to cool irrev...

A:

Q: I hypothesize that my unknown is benzene  based on my density but how do i explain ?

A: The qualitative estimation of the hypothesis of the compound being benzene can be done by chemically...

Q: CONCEPT CHECK! Determine the sign of AE for each of the following with the listed conditions: a) An ...

A: Exothermic reactions are reactions or processes that release energy, usually in the form of heat or ...

Q: Draw the organic products formed when attached allylic alcohol A is treated with following reagent. ...

A: The given alcohol is a primary alcohol. PCC is a mild oxidizing agent. It is used to convert alcohol...

Q: The recipe of carbonate buffer is as follows: 15mM sodium carbonate Na2CO3  35mM sodium bicarbonate...

A: A buffer solution is the one which resist any change in its pH following the addition of small amoun...

Q: (NH4)2 CO3(aq) + CaCl2 (aq) =

A: This is an example of exchange reaction. Ammonium carbonate reacts with calcium chloride to produce ...

Q: What is the difference between Ba, Ba(NO3)2, and Ba+2? Can they be used interchangeably? Why or why ...

A: Barium is one of the most active metal of alkaline earth metal. Barium oxidized it self to Ba2+. Thu...

Q: Electron Pair Molecular Molecule Lewis Dot Structure Arrangement Geometry Polarity H2S .. H- S-H CH,...

A: Only the first 3 can be attempted of all. For H2S  The electron-pair arrangement can be given as: M...

Q: Calculate [H3O+] for a solution with a pH of 4.80.

A: We know that pH of solution = -log[H+] or                                                       -lo...

Q: 4398 mg to kilograms

A: We are asked to convert 4398 mg to kilograms (kg)

Q: What should you do if some M HCl drips down the outside of your graduated cylinder while you are fil...

A: Given : HCl drips down the outside of graduated cylinder while filling it.    

Q: When glucose is burned in a closed container, carbon dioxide gas and water are produced according to...

A: The balanced combustion reaction of glucose is given as  C6H12O6(s) + 6 O2(g) → 6 CO2(g) + 6 H2O(l) ...

Q: What is likely the cause of the radius measured being half the radius?

A: The distance from the nucleus to the farther most point where the electron density can be located in...

Q: Complete the balanced molecular chemical equation for the reaction below. If no reaction occurs, wri...

A: Balanced molecular equation is given by,

Q: A metallic oxide is 40.06% oxygen. The metal has a 4+ charge. What is the metal?

A:

Q: Explain why acetals do not react with nucleophiles.

A: Acetals are organic compound formed by the condensation of two alcohol molecules with the eliminatio...

Q: Calculate the osmotic pressure of glucose solution (50.00 g/L) at 27 oC. The general formula is C6H1...

A: Given: Glucose solution is prepared as =50.00 g/mL Therefore, the Volume of the solution= 1 L The mo...

Q: Complete the balanced dissociation equation for the compound below in aqueous solution. Rb 3PO4 (S) ...

A: A balanced equation is one in which the number of atoms on both side of the equation are same. A bal...

Q: Please explain me this problems! Please don't reject this!! this is just HW problems.  I waited the ...

A: The volume of the unit cell is calculated as shown below.

Q: Draw line angle structures and Newman projections for C-2 and C-3 of (S)-2-amino-3-hydroxy- propanoi...

A: The isomers which are formed by the rotation of single bond is known as conformation isomerism.

Q: Following the rule that each atom of carbon, oxygen, and nitrogen reacts to achieve a complete outer...

A:

Q: ) Draw shorthand structures for three amines that are constitutional isomers and have two degrees of...

A: Amines are the functional group in organic chemistry which is represented by the formula -NH2. Struc...

Q: For the listed solvents provide their structure in bond line notation, draw the overall polarity of ...

A:

Q: Does a fluorine-oxygen bond have a significant dipole moment?

A: A bond is said to have a significant dipole moment if they have a good difference in electronegativi...

Q: Concentrated Potassium Chloride is available in a concentration of 1.49 g of KCL per 50 mL. If a 50 ...

A: 1.49 g KCl in 50 ml  moles of KCl in 50 ml = 1.49 g /74.55g/mol =0.0199 =0.020 mole KCl in 50 ml = 2...

Q: 4) Assign E /Z designation to each double bond where applicable. a) b) N, NH Br c)

A:  Stereoisomers are the molecules having same molecular formula but differ only on the spatial arrang...

Q: For the elements Ba, F, and P, the order of increasing electronegativity is:   a. Ba < F &lt...

A: The electronegativity trend in the periodic table are 1) On moving from left to right along the peri...

Q: Show your all work

A: Resonance occurs only when there is something in conjugation. Conjugation occurs only there are alte...

Q: A doctor orders 2.0 mgmg of morphine. The vial of morphine on hand is 40. mgmg per 2.0 mLmL . How ma...

A: Given : Doctor's prescribed dose = 2.0 mg of morphine And available vial morphine concentration = 40...

Q: How much ethanol will be consumed to provide 7 x 107 kJ/yr?

A: Given, Molar mass of ethanol = 46 g/mol 1 mole of ethanol reacts with 3 moles of oxygen to produce e...

Q: please ....

A:

Q: What is the formal charge on the anionic molecule (BrO3)-?

A:

Q: toluene, a colorless organic liquid, has a density of 0.8669 g/ml at 20 C. determine the spefic grav...

A: Specific gravity is the ratio of the density of a substance to the reference substance (water). Giv...

Q: 4. A 2.0000 g sample of a zinc compound ("ZnX") contains 1.6068 g of zinc. molar mass of the compoun...

A:

Q: The average dosage of oxcarbazepine for an epileptic child between the ages of 4 and 16 is 9.00 mgmg...

A: Given : Dose of medication = 9.00 mg/Kg of body weight  Weight of child = 57.6 pounds And available ...

Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.