The mass of an unidentified rock is 15.5 grams. Students determine the volume of the rock by placing the rock in a cylinder with water. The students calculate the density of the rock. They determine the identity of the rock based on the density ranges in the table.   The students most likely have which type of rock?

Q: 62. In the process of recrystallization, what is the compound that undergo in this process?" Benzoic...

A: The correct option is:  

Q: 1. Discuss the chemical basis of the positive and negative results of the chemical tests performed i...

A: Oils become rancid.

Q: 4. Assume that a student places 1.0 mol of solid PbBr2 in 1.0 L of 0.0025 M Pb2+. Part of the lead b...

A: Recall the given equation of dissociation that will occur here                 PbBr2s→Pb2+aq + 2Br-a...

Q: 8. Propose a structure for the compound having the mass spectrum shown below. Identify the major fra...

A:

Q: 7. Ethyl Ethanoate dissolved in water. True O False

A: The answer is as follows:

Q: 1. What is the volume (in liters) occupied by 49.8 g of HCl at STP? > II

A:

Q: Which shape and bond angle are predicted by VSEPR theory for H2O? a. linear, 180° b. bent, 120° c. b...

A: The stearic number of water is 4(ie 2 lone pair and 2 sigma bond)

Q: (c) In the Diels-Alder reactions below, explain the product that could be formed. (i) H (ii) OCH3

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

Q: A sample of water with a mass of 764.1g undergoes a temperature change from 41.23oC to 20.82oC. What...

A:

Q: What is a glysodic bond 1,4 mean and 1,6

A: In oligosaccharides and polysaccharides the monosaccharide units are joined by an -O- linkage it is ...

Q: Excess of Cu(s) is added to 2.00M solution of Cr3+(aq). Given that: Cr2+(aq) + Cu+ (aq)  Cu (s) + Cr...

A: Given:  Concentration of Cr+3 = 2.00 M  Kc = 7.20   

Q: Which sentence is false about gravimetric analysis? a. It is used for inorganic b. It is used to a...

A: The statement which is false about gravimetric analysis is, Relative precision 3% to 4%

Q: This graph shows how the vapor pressure of three liquids varies with temperature: 900 800 700 600 50...

A:

Q: 4. Circle the following pairs of structures that do not constitute resonance structures. For proper ...

A: Molecule participate in resonance by delocalization of π electrons with lone pair of electrons in th...

Q: The carbocation electrophile in a Friedel-Crafts reaction can be generated in ways other than by rea...

A:

Q: Please answer questions 1 & 2 and show your work. 1. A 0.77 mg sample of nitrogen reacts with clori...

A:

Q: Compare with explanation the acidity of the following pairs of compounds. (Note: You must draw the a...

A:

Q: The solubility product constant, Ksp, values for some fluoride compounds are given below. Use these ...

A: Given, The least soluble compound in water at 25 °C from the list is:

Q: Procedure: 1. Label the two glasses hot and cold with respect to their temperature to avoid confusio...

A: As the kinetic energy increases the rate of diffusion increases. meanwhile rate of diffusion is dire...

Q: Fill in the blanks: A Scotch whisky blend contains 40% alcohol by volume. How many milliliters of al...

A: Number of mole is calculated by dividing the given mass with molecular mass.

Q: Multiple Choice For each pair of standard cell potential and electron stoichiometry values below, ca...

A:

Q: 1. (a) Draw the structures of A to E in the following reactions. (i) OH 1. LIAIH4 A РСС 2. H2о (ii) ...

A:

Q: How can the relative supersaturation be varied during precipitate formation?

A: RELATIVE SUPERSATURATION IS A TERM THAT INCLUDES FACTORS UPON WHICH PARTICLE SIZE OF PRECIPITATE DEP...

Q: Problems Write the formulas for the components in each reaction and, using the smallest whole number...

A: In a balanced reaction, all atoms of all elements must be equal on both sides. 

Q: A hot 125.0 g lump of an unknown substance initially at 153.0 °C is placed in 35.0 mL of water initi...

A: Given: Mass of substance = 125.0 g. Initial temperature of substance = 153.0 oC Volume of water = 35...

Q: (Q82) The decomposition of gaseous dinitrogen tetraoxide (N2O5) to nitrogen dioxide and oxygen gases...

A:

Q: Provide the correct IUPAC name for the compound shown here.

A: In IUPAC naming select the longest carbon chain which is has more number of substituents. If the sub...

Q: Draw the major product of this reaction. Ignore inorganic byproducts. H 1. CrO3, H2SO4 2. Neutralizi...

A: In ketone and aldehyde both have carbonyl group. Due to the electronegativity difference between car...

Q: How many signals would you observe in the 1H NMR spectra of these molecules? Label all the signals w...

A: The number of signals of a molecule in the proton NMR spectrum is equal to the number of different t...

Q: The ion PCI4 has a structure that would be described as? a. octahedral b. Square planar c. trigonal ...

A: Which of the following is correct

Q: Suppose a 500. mL flask is filled with 0.20 mol of Cl, and 1.5 mol of HCI. The following reaction be...

A:

Q: a) Determine the total order of the reaction. b) You want to increase the reaction rate as much as y...

A:

Q: (c) Nitrobenzene will undergo electrophilic aromatic substitution at meta position, but not at the o...

A:

Q: Draw the shape of a pH curve for the titration of 400 mL of 1.0 M H2SO3 with 0.5 M NaOH. What type o...

A: The titration curve for the titration of 400 mL of 1.0 M H2SO3 with 0.5 M NaOH solution is needed to...

Q: What is the boiling point of pure water in °C? (no decimals and no units needed in answer) Answer: W...

A: The temperature where the liquid and gaseous phase are in equilibrium is called boiling point. 

Q: 67. The figure below is an example of, O porbital O d-orbital O forbital

A: Here we have to determine the types atomic orbitals participate in overlapping during a molecule for...

Q: Calculate the standard free energy change (kJ/mol) for the reaction shown at a temperature of 298.15...

A: Given reaction is :  N2 (g) + 2O2 (g) ------> N2O4 (g)  Change in enthalpy of the reaction = ΔHrx...

Q: 3. Assume that a student places 1.0 mol of solid Pbla in 1.0 Lof water. Part of the lead iodide diss...

A: Number of moles of PbI2 = 1 Mole  Volume of water = 1L Concentration of [I- ] = 0.0052M

Q: b) 1.881x10-3g of copper (II) sulfate in 122mL of solution

A:

Q: Determine the [H*] of the following substances such vinegar, pH=2.65. Hint: [H*] = 10-PH %3D

A:

Q: What is the correct IUPAC name for the compound shown here?

A:

Q: Write the chemical reaction involved in the reactions of hydrocarbon. Experiment: Baeyer's Test Sub...

A:

Q: d. How many grams of potassium metal remain after the reaction? How many grams of water remain after...

A:                 K + H2O ------> KOH + H2   moles     1       1                1       1  Caculate...

Q: Shake the salt shaker several times to add salt into the water (the more you shake, the more salt is...

A: Dear student since it is a multiple subparts questions, according to guidelines here I am solving on...

Q: Complete the right side of the following molecular equation. Assume all salts formed are soluble. Ac...

A: Displacement reaction: when a highly reactive metal displaces the lower reactive metal from its salt...

Q: At constant Tand n, the pressure of a gas can be doubled by: decreasing volume to half O doubling vo...

A: At constant T and n ,the pressure of a gas can be doubled by given answer as below.

Q: 6. Plot aHA- and an for substituent group of histidine which has a pka of 5.97. Include a table of y...

A: The pH can be expressed in the form the Henderson-Hasselbalch equation: pH=pKa+log [A][HA+]

Q: name: Binary liquid - vapor phase diagram (Binary liquid vapor system)

A: Answer is given as per order of question, it is given  two images.  Types answer is also provided bu...

Q: A 50.0 g iron ball (sp ht = 0.473 J/g C) is heated to 35 C and is placed in a calorimeter holding 10...

A: Given, For iron ball: Mass of iron ball (miron) = 50.0 g Specific heat capacity of iron (Cpiron) = 0...

Q: Define the term symmetry operations.

A: Define the term symmetry operations.

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.