1. Calculate the average atomic mass of element Rq. This element has two isotopes, 85Rq and $7Rq. Rq has an atomic mass of 84.864 amu and occurs at an abundance of 68.35%. 87Rq has an atomic mass of 86.999 amu and occurs at an abundance of 31.65%. Show your work.

Q: A chemist adds 0.75 L of a 2.4 mol/L silver nitrate (AgNO3) solution to a reaction flask. Calculate…

A:

Q: Propane can be turned into hydrogen by the two-step reforming process. In the first step, propane…

A: A chemical equation can be added, subtracted, multiplied, or divided similar to an algebraic…

Q: 150.0 mL of 0.2105 M HNO3 was added in excess to 1.3415 g CaCO3 (100.09 g/mol). The excess acid was…

A: Given - volume of HNO3 = 150.0 mL             Molarity of HNO3 = 0.2105 M             Mass of CaCO3…

Q: In a clinical study, the drug methotrexate produced a blood level of 6.6 µg of methotrexate in each…

A:

Q: A mixture of 0.500 mol H2 and 0.500 mol I2 is placed in a 1.0-liter stainless steel container at 430…

A:

Q: Complete and balance the following redox equation. What is the coefficient of OH when the equation…

A:

Q: Which is better fractionating distillation or simple distillation?

A: We have asked question about distillation. We have asked that which distillation is better steam…

Q: Analysis of a sewage sludge sample reveals that it contains 0.025 g per Chromium. What is the…

A: Ppm is the concentration of solute in water out of million.It is used as unit of measurement when…

Q: A solution is prepared at 25 °C that is initially 0.17M in nitrous acid (HNO₂), a weak acid with…

A:

Q: What is the charge of the peptide, CGLEV, at pH 7? O +3 +2 +1 00 -1 -2 -3

A:

Q: Enter the correct abbreviation for this nucleotide below. Hint: If a deoxyribonucleotide, use a…

A: In this question, we have to write the correct abbreviation for the given nucleotide.

Q: (2.50 × 10º) (1.56 × 105 9.62 × 104 5.69 × 1061.00 × 10-8 (9.30 × 10-5) (8 = 5) (8.42 × 10- -4) 9.62…

A:

Q: Curved arrows are used to illustrate the flow of electrons. Using the provided structure of…

A: In given compound (serotonin), there are three atoms are present which contain lone pairs of…

Q: For each of the compounds below, two protons are indicated (with letters). Determine which of the…

A: The hydrogen atom attached to high electronegative atom like oxygen has higher acedic nature. The…

Q: 13. (a) For the following condensed formulas draw the Lewis structures. Include lone pairs in your…

A: Lewis dot structure help us to find out possible outcomes to draw a structure of a compound. Depend…

Q: A chemistry graduate student is given 125. mL of a 0.20M chlorous acid (HClO₂) solution. Chlorous…

A:

Q: Balance the following equation by adding the appropriate Coefficients. Do not include Physical…

A:

Q: At 20°C, the vapor pressure of ethanol is 45 torr and the vapor pressure of methanol is 92 torr.…

A:

Q: Use the changes in oxidation numbers to determine which elements are oxidized and which are reduced…

A:

Q: mass 2111 re your answer has a unit symbol

A: Mole can be defined as a standard unit for measuring large quantities of very small entities such as…

Q: 7. A compound contains 32.45 % C, 2.72 % H, and 64.83 % O. (a) What is its empirical formula?…

A:

Q: Fill in the blanks: A. -3 to +2 B. -3 to-2 C. -2 to +3 D. -2 to -3 What changes happened to the…

A:

Q: ill in the blanks: NO3 Nitrogen has the same oxidation number in all of the following except: C.…

A: The oxidation number of hydrogen is + 1.       Usually the oxidation number of oxygen is -2.  The…

Q: DATA Note: Use the videos as references except when data is provided here. Table 1. Selection of…

A:

Q: 10 KNO3 (s) + 8 C (s) +3 S (s) → 2 K2CO3 (s) + 3 K2SO4 (s) + 6 CO2 (g) + 5 N2 (g) If 75.35 grams of…

A: Given -> 10KNO3(s) + 8C(s) + 3S(s) ----> 2K2CO3(s) + 3K2SO4(s) + 6CO2(g) + 5N2(g)  Weight of…

Q: What is the IUPAC name for the compound shown? ⠀

A:

Q: μmol L A chemist must prepare 125. mL of 31.0 µM aqueous mercury(II) iodide (HgI₂) working solution.…

A:

Q: There are 1.2 x 1024 atoms of carbon in a sample of aluminum acetate, Al(C₂H3O2)3. How many moles of…

A:

Q: A reaction calls for 35.02 μL of benzaldehyde (d 1.0397g/mL). You decide to tare an empty flask and…

A: The mass per unit volume of a substance is known as the density of the substance. The density of a…

Q: Why is the ion of lead found in both Group 1 and Group 2?  Explain logically, cohesively in…

A: 1. It is expected that PbCl2 is precipitated in the first group but it is soluble in water and in…

Q: If you were to have a mythical amino acid based on glutamic acid, but one in which the hydrogen that…

A:

Q: Run [S₂08²-], M Reaction time in s 1 0.02 0.0008 48.10 2a 0.02 0.0008 105.20 3 0.02 0.0008 233.10 4…

A: The balanced equation for iodine clock reaction whose data given is: 2S2O32-(aq) + I2(aq)…

Q: The following chemical reaction takes place in aqueous solution: FeSO4(aq) + (NH4)₂S(aq) →…

A:

Q: Question 15 of 26 Fill in the blanks: A. 2 B. 3 H*+ Le _ASH3 + H₂O → _______H3ASO3 + When this…

A: And is C.  The coefficient for H+ is 6.  At first number of atoms in the reactant side and in…

Q: 1. Assign point groups to the following molecules. Choose the most symmetrical configuration…

A:

Q: 15.37 Predict the direction that predominates in this reaction: F¯ (aq) + H₂O(l) — HF(aq) + OH(aq)

A: The equilibrium reaction is: F-(aq) + H2O(l) ⇌ HF(aq) + OH-(aq)  The side (Reactant or product) that…

Q: PREDICT The MAJOR PRODUCT For The Following 1.) 6 2.) 5.) H3Cu CN میں 2000 OCHS ||| 4+2…

A:

Q: 2.24 What are the partial half-lives for the two major modes of decay for Cl?

A: 2.2 Partial half-lives for the two major modes of decay for 36Cl are 3.06 x 105 years and

Q: Consider the following data on some weak acids and weak bases: name acetic acid hydrofluoric acid…

A:

Q: Complete the table with the bond line structure and its respective IUPAC name.

A: Rules for the IUPAC name : Find and name the longest continuous carbon chain. Identify and name…

Q: A substance having a mass 1.5 g is burned in a bomb calorimeter. The temperature started at 20.2 °C…

A: Heat absorbed by bomb calorimeter = C* delta T C = heat capacity of the calorimeter = 15.3 kJ/0C…

Q: A student prepared several solutions of an unknown molecule, each at a different concentration. The…

A: Given: Best fit line y= 0.00626x + 0.00732 Path length= 0.760 cm To find: molar absorptivity

Q: What is the pressure, in Pa, of water vapor in equilibrium with the liquid phase at 396.9 K?

A: Given :-  Temperature of water = T2 = 396.9 K  Vapor pressure of water = P2 = ?…

Q: sample of 0.215 M Co(NO3)2 contains 1.12 x 1022 nitrate ions. The volume of the sample is _______…

A:

Q: Determine the cubic structure of platinum if it forms a unit cell with a volume of 0.0595 nm³. The…

A:

Q: Classify the following reaction: HCl(aq) + Zn(s) - → synthesis double displacement O single…

A:

Q: A chemist must dilute 58.2 mL of 4.65 M aqueous iron(II) bromide (FeBr₂) solution until the…

A: 58.2 mL of 4.65 M aqueous iron II bromide FeBr2 solution is diluted until the concentration falls…

Q: Identify the alkanes corresponding to the Newman Projection. H H #Do H A. 3,5-dimethylhexane B.…

A: The Newman projection represents the dihedral angles of different conformations of a molecule. In…

Q: What is the best estimate of pl of amino acid H? 1. pH-3.5 2. pH 6.0 3. pH 9.5 4. pH 7.5 4 3 2

A:

Q: Suppose a 500. mL flask is filled with 1.9 mol of N₂ and 0.20 mol of NO. The following reaction…

A: Equilibrium molarity of N2 is 3.81 M

Atomic Structure

The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.

Shape of the D Orbital

Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.