do you solve for density before or after you add liquid?

Q: a block of metal weighing 65 grams was heated to 100.0 C. The warm metal was quickly transferred to…

A: Weight of metal block = 65 g Initial temperature of metal = 100 0 C Weight of water  = 75 g Initial…

Q: A prednisolone solution contains 15 mg prednisolone per 10 mL. What is the percentage strength (w/v)…

A: percent of strength (w/v) of the prednisolone in this prescription means how many grams of…

Q: See Figure 3-7. Spectrum A has the functional group Spectrum B has the functional grou Spectrum C…

A: The alkyne -C≡C- stretching has IR frequency around 2100-2140 cm-1. The stretching of terminal C-H…

Q: 7) from 2.50 s¹ at a temperature of 22.0°C to 12.5 s¹ at a temperature of 35.0°C. Calculate the…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: A reaction mechanism has the following proposed elementary steps: Step 1: A ⇌ B + C Step 2: A + B →…

A: The given steps of the reaction are: Step 1: A⇌B+CStep 2: A+B→DStep 3: 2A+D→C+E In chemical…

Q: MARK EACH CHIRAL CENTER WITH AN ASTERISK OH 2 oth ot HQ ott V Ho oft N oft

A: we have to mark the chiral centers in the given structures

Q: 11. Calculate the change in internal energy for the combustion of 1.0 mol of propene given that the…

A: The change in enthalpy is given to be -2058 kJ. The number of moles of propene combusted is 1.0 mol.…

Q: 9.18 Calculate the value with which you divide molar magnetization Mot in emu/mol in order to get…

A: Molar magnetization(Mmol) in emu/mol is divided by 9.27400968 x 10^-24 to get the amount of bohr…

Q: A solution is made up by dissolving 15.0 g MgSO4.7H₂O in 60.0 g of water. What is the molality of…

A: The given data is as follows:     The mass of MgSO4.7H2O = 15.0 g The mass of water = 60.0 g = 0.060…

Q: ATOM Zinc (Zn) Lithium (Li) Lead (Pb) Platinum For which component of the battery is this element…

A: ATOM   What evidence suggests chemical changes is happening to the individual atom? What chemical…

Q: An unbalanced equation for the reaction of methane gas (CH4) with oxygen is shown below. CH4 + O2 →…

A: given unbalanced chemical equation CH4 +   []  O2 → 2CO2 + 4H2O to find  number of oxygen molecule's…

Q: Bromine has two stable isotopes: 79Br and 81Br with masses of 78.9183371 amu and 80.9162906 amu. If…

A: In this question we have to tell the the Mass of 79Br in 10 gram of Br which has 79.904 amu mass.

Q: Which of the following is an alcohol? OH H3CC0 OH3C-NH₂ O NaOH H3C-C-CH3 CH 3 CH 2 OH

A:

Q: What is the major product of the reaction below? a. H- H3C- CH3 CN -H CH₂CH3 b. H H3C NC- H3C- CH3…

A:

Q: The Haber process is used to synthesize ammonia (NH3) on a large scale by the reaction of nitrogen…

A:

Q: If I wanted to find a specific heat for this sub- stance, which segments of the heating curve might…

A: 3) Specific heat : It is the quantity of heat required to raise the temperature of one gram of a…

Q: A chemical reaction is run in which 260 Joules of heat are generated and 581 Joules of work are done…

A: Introduction Energy cannot be created or destroyed; instead, it can only be converted from one form…

Q: The decomposition reaction M H rightwards arrow M to the power of plus plus H to the power of minus…

A:

Q: The mass of the average boysenberry is 0.28 ounces. The average Tesla weighs 4900 lbs. If one were…

A: Given: mass of boysenberry = 0.28 ounces = 0.28 x 28.3495 g = 7.938 g mass of Tesla = 4900 lbs =…

Q: (c) Explain in chemical terms why treatment of ethanol with H₂SO4 and heat is not the best way to…

A: The Williamson ether synthesis is a chemical reaction used to synthesize ethers from alcohols and…

Q: 6) Draw an energy profile diagram with AH = - 10 kJ and E. (Activation Energy)=+ 25 kJ. Label:…

A:

Q: What is the freezing point of an aqueous solution that boils at 104.1 ∘C?   Express your answer…

A: The given information is as follows: The boiling point of solution Tb = 104.1 °C The freezing point…

Q: Sodium pertechnetate (Tc-99m) is a radiopharmaceutical used as a diagnostic agent with a half-life…

A: Given  Half life ( t1/2) for the sodium pertechnetate i.e.    t1/2 = 6.01 hour The decay of sodium…

Q: 3 steps ОН nobchadua Ene ograbnu w bruogmoo

A:

Q: What differentiates the Group 3A Cations from the Group 3B cations How do we prevent the…

A: Qualitative analysis is a branch of analytical chemistry that is concerned with the identification…

Q: Calculate the initial [S₂O32] on the paper ([S₂O3²-]o), assuming the amount of S₂O3²- you added…

A: To find out the initial concentration of S2O32- on the paper, assuming that the amount of S2O32-…

Q: be care, you T Calculate the volume of gas in liters produced at 470. C and 1.00 atm when 348 grams…

A: According to the question, The mass of the ammonium nitrate is given by = m = 348 grams The…

Q: If an oxide of carbon is 40% oxygen by mass, what is its empirical formula?

A: we have to determine the empirical formula of the compound

Q: 1.2 g of n-pentanol is combined with 1.5 g of sodium fluoride and 4.5 g of sulfuric acid. The…

A: Solutions- For the above reaction we have to determine the various parameters.

Q: What are intermolecular forces and how are they related to the solubility and properties of liquids…

A: Intermolecular forces (IMFs) are the forces of attraction or repulsion between neighboring molecules…

Q: he enthalpy change for the reaction of hydrogen gas with iodine to produce hydrogen iodide is 53.1…

A: Given reaction is,   H2(g)   +   I2(s)   ----->  2 HI(g)     ΔH = 53.1 kJ

Q: Give instructions for preparing 500 mL of a 0.15 M solution of NaCl

A: Please find your solution below : Molarity of a solution is a measure of concentration which is…

Q: Propose syntheses to carry out each of the following conversions. Assume ortho and para isomers can…

A: In this question, we will give the synthesis of the final product from the starting material…

Q: If 7.90 kJ of heat is needed to raise the temperature of a sample of metal from 15 °C to 20. °C, how…

A: The heat transfer is given by q = m x c x ΔT where: q = heat gained or lost (in Joules) m = mass of…

Q: The density of an (NaCl) ionic solid is 3.34 g/cm3 and the length of an edge is 482 pm.   a. How…

A: Given: density of an (NaCl) ionic solid = 3.34 g/cm3  length of an edge (a) = 482 pm…

Q: what is number of 3d electrons of the transition metal ion in [Ni(acac)2(OH2)2]

A: Transition metal complex  [Ni(acac)2(OH)2]

Q: Calculate the mass percent of solute in the following solutions: 1.) 6.50 grams of NaCl dissolved in…

A: It is based on the concept of mass percentage of solute . Here we are require to mass percent of…

Q: What is the correct name of the following aromatic compound? (the abbreviations at the beginning of…

A:

Q: Standardization of Sodium Hydroxide (NaOH) Solution Mass of KHP used (g) Initial buret reading (mL)…

A: “Since you have posted multiple questions, we will provide the solution only to the first question…

Q: small amount of HCl(aq) is added to this buffer system 1- NO3 + H₂0 OH¹ + HNO3 the pH rises only a…

A: A buffer system is a mixture of a weak acid and its conjugate base, or a weak base and its conjugate…

Q: How many calories are required to heat the following? 52.7 g of aluminum from 100 ̊C to 285 ̊C

A: Given data, Mass of Al = 52.7 g Initial temperature = 100oC Final temperature = 285oC Data taken…

Q: 10. то ОН HCI

A: Introduction Tertiary alcohols are organic compounds in which a hydroxy group is attached to a…

Q: The two compounds in A ar The two compounds in Bar the same molecule skeletal isomers functional…

A:

Q: Calculate the boiling point (T), in degrees Celsius, for a solution that contains 110.0 g of AICI,…

A:

Q: 8 ounce (237 ml) bottle of an energy drink provides 360 calories for a health weight management. if…

A: According to the question, The volume of the one bottle is given by = 8 ounces = 237 mL One bottle…

Q: 4) Ozone depletion can also be catalyzed by the bromine atoms. The overall reaction is given below.…

A:

Q: Using the information in the table, the value of the rate constant for the reaction 2 A(g) + B(g) →…

A:

Q: 15. What reagents produce the product shown below? SO3H HNO3 H₂SO4 heat A H₂SO4 heat B Br₂ FeBr3 C…

A:

Q: What is the multiplicity expected in the hydrogen NMR spectrum for the hydrogen atoms marked by a…

A: Given : structure of molecule  Tip : multiplicity in NMR = n+1       n = adjacent hydrogen

Q: Give typed answer with explanation number of 3d electrons of the transition metal ion in…

A: This question is related to coordination chemistry. Coordination compounds are those in which a…