Name: Peer Leader: Date: For all problems involving calculations, show your work. Carry the units through each calculation and follow significant figure rules. Use scratch paper to practice. 1. Fill in the empty boxes with the correct information. Atom/Ion Al Be2+ Name Magnesium Module 2 Worksheet Elemental 13 Aluminum ion Copper (2+) ion # Protons # Electrons #Neutrons #Nucleons Net Charge 5 13 15 27 14 27 31 9 0 0 2 0

Q: What are two or more elements scientists should investigate, which could substitute for two of the…

A: There are various elements present in the atomic table that are essential for life. These elements…

Q: An incomplete Lewis structure is shown below. The structure only shows the atoms and how they are…

A: •Given:-   •Lewis structure:- Lewis structure represents that structure of molecule with bonds,…

Q: How many grams of Cl2O7 contains 2.85 x 1021 molecules of Cl2O7 in it? Show work.

A:

Q: A scientist isolates an unknown organic acid through a series of experiments and intends to…

A: Answer:- This question is answered by using the simple concept of chemical reactions of acids with…

Q: What are the formal charges on these I am lost

A: Formal charge is charge assigned to the atoms in a molecule after formation of bonds.

Q: (a) hv CH₂ + Cl₂ (b) 3 CH3CH₂Br + 4 Li + CuBr (c) 2 CH3CH₂Br + 2 Na → CH₂Cl + HC1 CH3CH₂CH₂CH3 +…

A: We need to write mechanism of given reations

Q: How many atoms of all kinds are contained in 42.1 grams of calcium carbide (Ca2C)? Ans: 8.25 x 10^23…

A: Given :                Mass of Ca2C = 42.1 gm                 Molar mass of Ca2C = 92 gm mol-1…

Q: 5 6 2 8 3 7 9 4 ammonium phosphate 14. Write the correct name or formula for the following. Compound…

A: Note: Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: Question 3: Using the Wittig reaction (and working backwards), show how you would make the following…

A: In this question, we will use the wittig reaction for the formation of the given product.  Given…

Q: If chemical reaction A requires 270 kJ/mol of activation energy and chemical reaction B requires…

A: Activation energy of the reaction :  The minimum amount of extra energy required by reacting…

Q: hat is the best way to draw a molecular orbital diagram for 1,3-cyclopentadiene, identifying the…

A: Number of molecular orbitals is equal to number of sp2 carbons present in the compound. In…

Q: How do you make 340mL of a 4M solution from a 20 M stock solution?

A: Given : final volume = 340 mL            Final   Molarity = 4 M  Stock solution molarity = 20 M

Q: Given the following data C₂H4 (9)+302(g) → 2 CO₂ (g) + 2H₂O(l) 2C₂H6 (9) +702 (9)→ 4 CO₂(g) +…

A:

Q: Given the equation 2N₂(g) + O₂(g) = 2N₂O(g) Kc = 1.2x10-¹2, what is Kc for the equation 4N2O(g) =…

A:

Q: Cyclohexene has the formula C6H1o and the structure shown in Figure 4-4. When cyclohexene is treated…

A:

Q: Which of these substances can act as a Lewis acid? CI™ H₂O NH3 Cu²+

A: Lewis acid is a substance which can accept a lone pair of electrons

Q: Knowing that DHyap for water is 40.7 kJ/mol, calculate Pvap of water at 58°C X 4 5.3 torr 456 torr…

A: Answer: This question is based on Clausius-Clapeyron equation. Given data: T2=58°C∆Hvap=40.7kJ/mol

Q: 14 15 16 Unlike a graduated cylinder, a buret reads starting with zero at the top and going down.…

A: In the given picture, measure the appropriate volume reading and write down in the answer.

Q: 6. The heat of formation of Fe2O3(s) is -826.0 kJ/mol. Calculate the heat of the reaction 4Fe(s) +…

A: The given reaction is as follows: 4Fe(s) + 3O2(g) → 2Fe2O3(s) The heat of formation of Fe2O3(s) =…

Q: Arrange the molecules in decreasing strength of intermolecular forces. (Strongest = 1; Weakest = 4).…

A: In general intermolecular forces depends on the types of compound.

Q: Ochem bond line structures Please draw the bond line structures for the following compounds:…

A: Introduction Bond line structures, also known as line-angle formulas, are an effective way of…

Q: 5. Identify the nature of the following bonds between the atoms of the formula unit: NaCl Li₂O _bond…

A: To solve this problem we have to explain the type bond formation in the given compounds.

Q: Identify the main organic reaction shown as either condensation, hydrolysis, oxidation, or…

A: Given reaction:-

Q: A compound contains 75.69 g of Carbon; 8.80 g of Hydrogen and 15.51 g  of Oxygen. Find the empirical…

A: Answer: When atoms of each element present in the molecule are represented in the simplest possible…

Q: If 0.500 mL of an 0.214 M NaCl solution is added to 100.0 mL of pure water.  what is the…

A:

Q: For the cell shown, the measured cell potential, Ecell, is -0.3559 V at 25 °C. Pt(s) | H₂(g, 0.767…

A:

Q: Which of the following reactions would proceed as shown? A) B) C) D) S S & NaNH, Naº, NH3 NaNH2 Naº,…

A: Birch reduction of electron-deficient aromatic ring.

Q: Q3/A) How many signals 'H NMR be expected in the following molecules? ( 1) 5-methyl-3-hexanone 2)…

A: Given : name of compounds Tip : no. of 1H NMR signal = types of hydrogen

Q: Standard Enthalpy of Formation and Hess's Law 15. Consider the following data: ΔΗ° (kJ) -62.8 -635.5…

A: Hess's law describes that regardless of the multiple stages or steps of a reaction, the total…

Q: e. f. DO O H₂C- H- Ph -CI -OH CH₂CH3 CH3O* CH,O

A: Organic transformation

Q: 11. Consider the following processes: 2A (1/2)B+C - (3/2)B+4C2A+ C + 3D E +4A C Calculate AH for: a.…

A: Since,According to Hess's law change of enthalpy in a chemical reaction is same regardless of…

Q: 1 The solubility of phthalic acid in water varies greatly with temperature. At 14°C, the solubility…

A: We have find out the answer.

Q: Но, ОН 1. Swern 2. acid 0 1. CH3MgBr 2. H30+ ОН

A:

Q: Using the functional groups listed below, indicate the functional group that best describe the…

A: Given : structure of reactant

Q: The Quantum Mechanical Model of the atom was proposed by:

A: This model explains the recent understanding about any atoms, which is  commonly described as wave…

Q: 10.93. Arterial Blood Arterial blood contains about 0.25 g of oxygen per liter at 37°C and standard…

A: Introduction Henry's Law can be expressed in the form of an equation, where C is the solubility…

Q: hich of the following describes a double replacement reaction? 4Fe + 30₂ → 2Fe₂O3 2AgNO3 + H₂S →…

A:

Q: 3. Arrange the following in order of decreasing basicity (strongest 1st) (23 A -OK strongest CNNa B…

A:

Q: 3. a. Draw the structures of both of the major products for the following reaction. + H-CI b. Draw…

A:

Q: solve these problems 1. Determine the work done by the system against a pressure of 7.3 atm given a…

A:

Q: True or false: Hemicelluloses form weaker intermolecular bonds than cellulose. Select one: O True O…

A: We need go to tell , does Hemicelluloses form weaker intermolecular bonds than cellulose. The answer…

Q: A current of 3.69 A is passed through a Fe(NO3)2 solution. How long, in hours, would this current…

A:

Q: synthesis

A:

Q: The scene below represents a portion of a mixture of four gases: A (purple), B (black), C (green).…

A: Introduction The pressure of an individual gas in a mixture of gases is known as partial pressure of…

Q: Calculate Mn, Mw and the polydispersity index for a hypothetical polymer sample that contains…

A: The molecular weight of a polymer is an important characteristic that determines its physical and…

Q: You need to make 100mL of a 0.2 molar sucrose (C12H22O11) solution. How much sugar do you need to…

A: A molar solution of a substance is a solution that contains a defined number of moles of solute per…

Q: Which one of the following is NOT broken down by the amylase enzyme? options: Sucrose Starch…

A: Amylase is an enzyme that catalyzes the hydrolysis of internal alpha-glycosidic linkages in starch…

Q: 9. Write the correct formulas for the following compounds and state if they are molecular or ionic.…

A: we have to fill the given table

Q: particular element has two naturally occurring isotopes. The first makes up 20.000% of the total and…

A:

Q: Calculate the cell potential for the reaction as written at 25.00 °C, given that [Cr²+] = 0.768 M…

A: Given data :  Cr(s) + Fe2+ (aq) ==> Cr2+(aq) + Fe(s)  From table :  E(Fe2+/Fe) = -0.44 V…

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.