Calcium metal reacts with phosphoric acid.  What mass of precipitate (in grams) is produced when 40.5 g of calcium reacts with excess phosphoric acid? Hint:  Write a balanced chemical reaction first.  Record only your final answer with the correct number of significant digits.

Q: sample of oxygen gas occupies a volume of 47.2 L under pressure of 3.24 atm at 298 K. What volume…

A: Given that, a sample of oxygen gas at 298 K temperature has The initial volume is V1 = 47.2 L, The…

Q: The FTIR spectra below is probably... * % transmittance 100 80 60 40 20 Image adapted from…

A: IR spectrum has peaks corresponding to characteristic bond stretches.

Q: b Use curved arrows to show the mechanism of the step below. Make the ends of your arrows specify…

A:

Q: Question #1 ● ● ● # of moles of p-ethyl phenol used: (Show calculations) Amount (moles) of unknown…

A:

Q: It took 2.35 min with a current of 2.05 A to plate out all the silver from 0.250 L of a solution…

A: Given,  The concentration of Ag+ in the solution when 2.05 A current passed in 2.35 min. through the…

Q: For the aqueous [Fe(CN)6] complex K₁=1.00 × 10³5 at 25 °C. Suppose equal volumes of 0.0078M Fe(NO3),…

A:

Q: Which of the following 3+ Zn +2 Fe³+ (a a. Zn(s) b. Cu + (aq) + 2 H (aq) → reactions is spontaneous…

A:

Q: * The FTIR spectra below is probably... * | 100 % transmittance 80 80 95 20 Image adapted from…

A: The IR spectrum shows the characteristic peaks corresponding to the functional group present in the…

Q: 1. Draw the structure of a triacylglycerol made from glycerol and one molecule of palmitic acid, one…

A: we have to draw the structure of triacylglycerol which has glycerol palmitic acid oleic acid…

Q: Predict the product of the following reaction, include stereochemistry if necessary. o

A:

Q: 4. Write out the 10 structure for the following polypeptide: Ο Η OH 요 H₂N-CH-C-N-CH-C-N-CH-COO + T…

A: The primary structure is the linear sequence of the amino acids of the peptides.  When the peptide…

Q: as content is projected and Provide the reagents necessary to complete the following reactions. More…

A:

Q: Determine whether each of the following is true or false for a weak base.

A: According to BRONSTED and Lowery, relationship between the strength of an base and the strength of…

Q: 5.2.65 gram potassium hydroxide was dissolved in water to make a 750.0 ml stock solution. 20.0 ml of…

A:

Q: Chemistry is this a michael, aldol or claisen product? What bond is the first to disconnect with…

A:

Q: Predict the products of the following reactions. Include stereochemistry when necessary. For…

A:

Q: What volume (in L) does a 3.88 mol sample of hydrogen gas occupy at STP? (Do not show your work in…

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

Q: Calculate the pH of the cathode compartment for the following reaction given cell = 3.01 V when…

A:

Q: why H2 is produced at the cathode and not Na+. Can someone explain

A:

Q: Calculate the solubility of AgCl in: Ksp = 1.6 × 10–10 a) 100.0 mL of 4.00 x 10-3 M calcium…

A:

Q: Consider the reaction PC15(g) PCl3(g) + Cl2(g). Calculate the equilibrium constant (Kp) for the…

A:

Q: What is Eº for the following balanced reaction, if Kc = 4.38 x 1010 --> Zn +2 Zn+2 (aq) Fe(s) Zn(s)…

A:

Q: A pH meter is calibrated using a pH 4.00 buffer with 174.48 mV, pH 7.00 with 0 mV and pH 10.0 buffer…

A: To calculate the Molar concentration of HCl solution with electrode potential of 396.31 mV.

Q: calculate the volume in Liters of H₂ gas produced at 27 degrees Celsius and 744 torr from the…

A:

Q: Propose a mechanism for the following transformations: a) b) c) 20+ Br OCH₂CH3 H3O+ H. H H HO NH₂…

A:

Q: Indicators can be used to help approximate the pH of a solution based on the indicator colour. Here…

A:

Q: What is the quantity of GFP (µL) extract needed when provided with a 20 µL of 5X Laemmli sample…

A:

Q: A 2.52 x 10¹¹ M solution of HNO₂ was allowed to reach equilibrium. Ka = 4.1 x 10-4 a. Write the…

A:

Q: The reaction: Al(s) + Fe₂O3(s) → Fe(s) + Al₂O3(s) has AH = -847.6 kJ and AS = -41.3 J/K at 25 °C.…

A:

Q: Calculate the Rf value of the Blue spot on the TLC Plate below. (answer must have * 2 decimal…

A: Calculate Rf value of the blue spot on TLC.  From the figure,  Distance travelled by the solvent…

Q: In the experiment, the TLC plate was submerged in toluene ethylacetate and had spots of cinnamon…

A: Thin layer chromatography is used to know how many components are present in the mixture .To know…

Q: Propose reaction mechanisms between benzoyl chloride with the following reagents: a) H₂O, pyridine…

A:

Q: Data Table: Room Temperature Saturated Solution (25 °C) 100 °C Saturated Solution Volume of…

A: •CONCEPT:--Here in titration we add "HCl" in solution of Calcium hydroxide to find out its…

Q: Nitric acid is a potentially dangerous strong acid that must be handled with great care. A…

A:

Q: ▼ Part A [H3O+]=7 x 10-8 M Express your answer using one decimal place. pH = Submit Part B pH…

A: Since, Negative logarithm of H3O+ ion is known as pH. So,

Q: Arrange the following in order of DECREASING acidity. Type letter codes only of your answer in…

A: +M effecting groups on benzene ring decreases the acidity of benzoic acid and - M effecting groups…

Q: Name: DESPR www.ged C1 4 HNA EX

A:

Q: Rate of reaction (nmol/min) 30 25 20 15 сл O Rate of Reaction (nmol/min) vs Temperature (°C) 10 20…

A: #Part-1: The optimal temperature for an enzyme's activity is the temperature where the rate of…

Q: For the following molecula: CH₂ Н Br CH3 A) Select its diastereomer: Н. -OH H -H CH3 CH3 -OH -Br B)…

A:

Q: Al | AIS (1.00 M) || Pb²+ (1.00 M) | Pb Calculate the cell potential after the reaction has operated…

A: Here we have to determine the cell potential of the following given Galvanic cell when the cell…

Q: 1. Complete the following reaction - assume only one addition occurs NaOH Br₂ HCI Br2

A: Since, you have multiple questions. So, I will solving first question for you in details.  You can…

Q: How many grams of propane gas (C3Hg) are needed to pressurize a 12.2 L container to 3.4 atm at a…

A:

Q: a. (i) Starting from K2₂[PtC14], plan synthetic routes to the two complexes A and B shown below,…

A:

Q: 2. For each of the following reactions or series of reactions, indicate the starting material,…

A: These are addition reactions and chlorination reactions.

Q: he pH of a buffer s O 1.00 3.00 7.00 10.0 14

A: pH of solution is defined as negative logarithm of hydrogen ions present in the solution.

Q: Click the  button within the activity, and analyze the relationship between the two reactions that…

A: Here we are required to find the Enthalpy of the reaction.

Q: What is the reason why Boric Acid acts as a very weak monobasic acid?

A:

Q: 13) Write in the reactants needed to make the following transformations (only one reactant needed…

A: According to the bartleby guidelines for multiple questions, I can solve only first one question. If…

Q: 20. Provide the major organic product of the following reaction. 1. HNO3, H2SO4 2. Fe, HCI 3. NaNO2,…

A: Given organic compound is called as a isopropyl benzene or cumene.  Isopropyl group is ortho or para…

Q: Suppose a 250. mL flask is filled with 1.0 mol of NO₂ and 1.3 mol of NO. This reaction becomes…

A: Given reaction is :  2NO2 (g) <--------------> 2NO (g) + O2 (g)  Volume of solution in mL =…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.