13. A certain gas is at a pressure of 1.78 atm at 127.0 °C. What will the pressure be (in kPa) at 180.0 °C assuming no change in volume? A: 204

Q: 50.0 mL sample of a NaCl solution contains 1.10g of NaCl. What is the % (w/v) concentration of the…

A: % (w/v) concentration is defined as the mass percent of solute present in 100 mL of solvent hence…

Q: (Q33) What is the root mean square speed (UrMs) of fluorine gas at -60.3 °C?

A: Given: Temperature= -60.3oC  = 212.85 K  To Calculate: Root Mean square speed of Fluorine gas

Q: 2. What is the best explanation for the difference in shape between the two drops shown below?…

A:

Q: Complete the table below by deciding whether a precipitate forms when aqueous solutions A and B are…

A: Precipitation reactions are those which result in the formation of a insoluble solids..

Q: 7 1 5.3Li +1H → 2 He+ O a. He O b. 2, 1H O C. 3 O On d. 4 4Be

A: A radioactive reaction can be balanced by summing up the atomic number and mass number on both sides…

Q: Use the observation in the first column to answer the question in the second column. oft observation…

A: Well, The amount of energy required for a substance to go into the vapor phase from the liquid phase…

Q: The solubility of oxygen gas in water at 25 °C and 1.0 atm pressure of oxygen is 0.041 g/L. The…

A: According to Henry's law, solubility of gas is directly proportional to the pressure of gas at…

Q: Copper vessels kept for a long period of time get coated with a greenish substance. This greenish…

A: Given,  Copper vessel kept for a long period of time get coated a greenish substance. This greenish…

Q: Using molarity to find solute moles and solution volume Caliyah v Calculate the volume in…

A: Given that : Molarity of Calcium bromide = 3.3 M Moles of calcium bromide = 100 mmol Volume of…

Q: What is the equivalent weight per mole of carbonic acid? a. 4 b. 2 c.1 d. 3

A: Here the formula used will be   Number if equivalents= moles x the n factor  Here the n factor for…

Q: (Q41) For what reason is the meniscus of mercury in a test tube convex? The cohesive forces of the…

A: Cohesive force : the intermolecular force which exists between molecules of one substance.  Adhesive…

Q: Rank O⁻, O²⁻, and O in order of increasingsize.

A: When the number of protons and electrons are not equal, the ions are formed from an atom. When the…

Q: SO3 HNO3 0.1% H2SO4 C10H1403S C10H13NO5S H2SO4 H2SO4 H20

A:

Q: When water and an electrolyte, such as salt, is added, the solution conducts electricity from a…

A: Electrochemistry is the branch of chemical sciences in which the conversion of electrical and…

Q: 2. The speed of a chemical reaction A. is constant no matter what the temperature is. B. is…

A: The speed of chemical reactions are given by the reaction rate. It is defined as the measure of how…

Q: (6.11) Calcium hydride, CaH2 (s), reacts with water to yield H2 (g) and Ca(OH)2 (s)- (a) Write the…

A: Given, Calcium hydride, CaH2 reacts with water to yield H2(g) and Ca(OH)2(s). a) write the balanced…

Q: 5. can be used to treat a range of conditions such as asthma and chronic obstructive pulmonary…

A: A multiple choice question based on general chemistry that is to be accomplished.

Q: What mass of silver nitrate, AgNO3, is requiredto prepar 800 g f350% solution of AgNO3 ? a. 24.6 g…

A: The required mass of Silver nitrate can be calculated as3.50% AgNO3 means 3.50g AgNO3/100 g soln.

Q: Use the following information to answer question 35. An Equilibrium System N₂O4(g) + energy = 2…

A: In the graph initially there is equilibrium between N2O4 and NO2 then N2O4 is added ( as shown in…

Q: If a sample of gas is heated from 100°C to 300°C at constant pressure, the volume will ? by a factor…

A:

Q: . 92.3 ml . 226 ml 4. Solution B was prepared from solution A as shown below. The concentration of…

A: 4) The formula of dilution is  C1V1 = C2V2 Where, C1 and C2 are initial and final concentrations of…

Q: 5. In the Dumas method for determining the molar mass of an unknown volatile liquid, a sample of a…

A: We have find out the molar mass of the unknown and   temperature be when the pressure is 1.20 atm…

Q: These organic solvents are used to clean compact discs:(a) If a 15.00-mL sample of CD cleaner weighs…

A: Density=massvolumeif we know the two of the parameters then wa can calculate the third parameter.

Q: Answer Q48, 49, 50

A: 48. Alcohols reacts vigorously with PCl5, secondary alcohol when react with K2Cr2O7 gives  Z is a…

Q: Water has unique physical properties, i.e. it very effectively dissolves many polar compounds, and…

A: Hydrogen bonding is a kind of intermolecular interaction that is shown by compounds containing an…

Q: 32. Osmosis: a. Is the passage of water and small molecules across a semipermeable membrane from a…

A: We have to choose correct option about osmosis

Q: 48. Name the following alkynes. CH,CH3 GH=CH CH; C=CCH2 CH3 CH;C=CCHCH,CH3 a b а. b. С. 50. Name the…

A: Let us name the given compunds.

Q: How many Calories does a sandwich with 10g of fat, 5g of carbohydrates,and 6g of protein have? A.…

A: The given sandwich contains: fat = 10 g carbohydrates = 5 g proteins = 6 g The amount of calories in…

Q: 16. The concentration of a 1500mL aqueous KCI solution was increased from 25.0 M to 80.0 M by…

A:

Q: (11.7) Identify the number of sigma bonds and pi bonds in a triple bond. O 1 sigma, 2 pi O2 sigma, 1…

A: If there is a single bond between two atom then it is Sigma bond. If there is double bond between…

Q: Photosynthesis in plants converts carbon dioxide and water into glucose (C,H1206) and oxygen…

A:

Q: (Q59) What is the molality of a solution that contains 73.7 grams of strontium fluoride that has…

A: This question is from chapter Solutions. There are many ways of expressing the concentration of…

Q: Dissolution of O₂ (and all other gases) in water is [Select] O2 becomes [Select] Although we haven't…

A: Answer:-This question is answered by using the simple concept of solubility of the gases in liquid.

Q: 314.831624. Report this value to the following number of sig. figs.: a)3 sig. figs.:…

A: a) 314 b) 314.831 c) 3 d)31

Q: 45. Ethanol is a polar compound that readily dissolve in water, so it is A) immiscible 8

A: Given that Ethanol is a polar compound i.e. readily dissolve in water . So, ethanol is miscible with…

Q: The following reaction represents a step in the formation of iron, Fe(!). How many grams of Iron can…

A: The given chemical reaction as follows --- Fe3O4 (s)   +   4 CO (g)   →   3 Fe (l)   +   4 CO2 (g)…

Q: 4. at type of bond promotes solubility alcohols in water? A. Hydrogen bonds B. Dipole-dipole bonds…

A: When the hydrogen atom is attached to a strong electronegative atom, particularly of the second…

Q: (11.4, 11.7)In the Lewis structure of the molecule XY4, all X and Y bonds are single bonds and…

A: From the VSEPER theory we can tell the geometry of the complex.

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.