A brick has a mass of 4.0 kg and the Earth has a mass of 6.0 x 102 g. Use this information to answer the questions below. Be sure your answers have the correct number of significant digits. What is the mass of 1 mole of bricks? g How many moles of bricks have a mass equal to the mass of the Earth?

Q: How do intermolecular forces relate to the physical properties of substances? (ou will examine sever...

A: Intermolecular forces of attraction are the forces of attraction that takes place between two molecu...

Q: A silver block, initially at 51.0 °C, is submerged into 100.0 grams of water at 25.3 °C in an insula...

A: q = m c ∆T q = Heat change in the reaction m = mass c = specific heat Ti = initial temperature Tf = ...

Q: One component of a solid mixture weighing 73.00 g is barium chloride (BaCl2). After being dissolved ...

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Q: Clikk in the ansner bes to activate the palette. Halance the equation representing the reaction hetw...

A: Answer: Balancing of a chemical reaction is based on concept of conservation of mass and for that at...

Q: When the alkyl bromides (listed here) were subjected to hydrolysis in a mixture of ethanol and water...

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Q: You started with 1.000 g of unknown and isolated 0.9550 g of metallic Cu. What is the calculated for...

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Q: Draw condensed structural formulas for all unique constitutional isomers of the monochloro derivativ...

A: The answer is as follows:  

Q: 4. A 0.5843-g sample of a plant food preparation was analyzed for its N content by the Kjeldahl meth...

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Q: What conversion factor would you use to convert 72.9 g Cl to moles of Cl?

A: given, the mass of Cl = 72.9 g the molar mass of Cl = 35.5 g.mole-1

Q: Answer the following questions about the Lewis structure for calcium hydrogen carbonate, Ca(HCO3)2 T...

A: Lewis structure of HCO3- ion is given by,

Q: Provide methods for synthesizing the following compounds. In each case, ethylmagnesium bromide must ...

A: Detail mechanism for every conversion is shown below

Q: 16.04g

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Q: NH2NH2 ? H Mild Acid N-Me Vicodon Мео. Мео. H H N-Me H* H N-Me N NH2 Me HN в A Meo, Meo. H H N-Me H ...

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Q: 100-g of MgSO4*7H2O is dissolved in 900 g of water. If the density of the solution is 1.047 g/mL, wh...

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Q: 1. What is the weight of pyridine. CaHN that must be dissolved in 250 ml of solution to produce a hy...

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Q: The distribution ratio of iodine between an organic solvent and water is 8.00. If 50.0 mL of 0.100 M...

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Q: CH4 instead of water. The enthalpy Imagine a person sweats for evaporating liquid CH4 is +8.2 kJ/mol...

A: A question based on chemical thermodynamics that is to be accomplished.

Q: Determine DG0 for the reaction: 2CO(g) + 2H2(g) ---> CO2(g) + CH4(g) DH0 = -247.3 kJ/mol DS0 = -256....

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Q: 1) NaOH, H2O 2) РСС H H.

A: Given reaction is aldol condensation followed by oxidation with PCC

Q: A sulfuric acid (H2SO4 d=1.83g/mL) aqueous solution having 5.8321 Molar Concentration with a density...

A: The mole of solute present in a one-liter solution is known as the molarity of the solution. The mol...

Q: Joey adjusts the pressure exerted on a balloon from 38.5 psi to 72.5 psi. As he does so, the volume ...

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Q: When B2H6 reacts with oxygen to form HBO2 and H2O, what mass of B2H6 will be needed to burn 36.1 g o...

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Q: A sample of gas is manipulated so that its temperature (in K) triples and its volume is reduced to o...

A: An ideal gas will follow the ideal gas equation. The ideal gas equation is given by PV=nRT, where P,...

Q: What would be the final concentration if a 7.56 mL solution of 12 M NaCl solution is diluted to a vo...

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Q: The product (name) in the reaction with H20/ acid catalyst and H9SO4. Pls draw the whole reaction an...

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Q: 4. Calculate the molar concentration of a 20.0% solution (w/w) of KCI that has a specific gravity of...

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

Q: The molar heat of combustion, A H, of methane is -890.7 kJ mol-1. If 0.0500 moles of methane is comb...

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Q: A 0.0670-g quantity of acetic acid is dissolved in enough water to make 50.0 mL of solution. Calcula...

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Q: A 2.987-g sample of a monoprotic acid was dissolved in water. It took 23.78 mL of a 0.1238 M NaOH so...

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Q: Which of the following solutions will, when mixed together, produce a precipitate? O Cacl, (aq) and ...

A: Given options are : a). CaCl2 (aq) and Na2CO3 (aq)  b). LiOH (aq) and NaOH (aq)  c). Pb(NO3)2 (aq) a...

Q: Arrange the measurements in ascending order: 0.001 m, 0.001 km, 1 pm, 0.1 mm, 10 cm, 100 um, 1000 nm

A: Arrange the measurements in ascending order--

Q: The molar heat of combustion, A Hi, of sucrose is -5643.4 kJ mol-1. If 0.250 moles of sucro: reactor...

A: □Hrxn = n × □Hc  =0.250 × (-5643.4) = -1410.85 kJ □Ssurr. = -□Hrxn/T

Q: A sample of gas occupies 36.3 ml at a pressure of 783.3 torr. What is the new volume if the pressure...

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Q: Describe the similarities and differences in the energy profiles for exothermic and endothermic reac...

A: Exothermic reaction are the chemical reactions in which energy is released and Endothermic reactions...

Q: Pentaborane BgHgls) burns vigorously in O2 to give B203s) and H2O0. Calculate AHren for the combusti...

A: Moles of B5H9 = 5 mole  

Q: To wire your stere0 equipment, 325cm of speaker wire is needed, which sells for $0.15M. How much wil...

A: Length of speaker wire = 325 cm

Q: Question 2: Based on the ES electronic configuration of N and O; a) Write all the possible hybrid o...

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Q: Each sketch below shows three objects with an electric charge. In each case, decide whether there is...

A: The net force can be calculated based on the type of charge and it's magnitude alongwith the distanc...

Q: How do you write out a balanced chemical equation?

A: To write a balanced equation, the reactants go on the left side of the arrow, while the products go ...

Q: One drawback of lithium is that it also reacts favorably with O2 in the air to produce Li, Balance t...

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Q: In order to optimize acetylcholinesterase inhibition, a set of benzylamine derivatives were studied,...

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Q: For a solution in which u = 8.0 x 10, calculate K', for s. Pbl,. The thermodynamic constant of the s...

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Q: In each box please fnd and then write the correct element by name, its atomic number, atomic mass, a...

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Q: In squash soup: what are the browning reactions in squash

A: Browning reactions are complex reactions which occur when food is processed. In some cases brown col...

Q: Calculate the pH of the buffer system made up of 0.17 M NH3/0.47 M NH,CI.

A: Given : buffer solution of 0.17 M NH3 and 0.47 M NH4Cl  To calcxulate :- pH of  given buffer.

Q: polar

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Q: H,CO A B H. E

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Q: t the major and minor products of the reaction. Name the products using syst H+ CH,CH,CH=CH, + H,O →...

A: Alkene with H2O in presence of H+ , electrophilic addition reaction mechanism takes place.i.e. hydra...

Q: 45.00 mL of 0.010 M HCI(aq) was mixed with 65.00 mL of 1.0 M Ba(OH)2(aq) in a Styrofoam cup calorime...

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Q: What is the mass of oxygen atoms are in 4.36g of FeSO4?

A:

Introduction to chemistry

Chemistry is a branch of science that deals with the analysis of material and the substances that comprise it. It also manages the properties of these substances and their reactions to form new substances. It is basically centered on particles and atoms that make up components and mixtures. These chemical species will in general connect using bonds.