2. Which statement about silicon is false? It is a metalloid. b. It behaves as a semiconductor when pure. a. It is extremely rare in the earth's crust. d. c. It has a smaller atomic radius than aluminum.

Q: Purple spheres represent iodine atoms, white spheres represent hydrogen atoms, and all of the…

A: Given:  Purple atom = Iodine (I) White atom = Hydrogen (H)

Q: 1. What is atomism? 2.  What is alchemy? 3. What is protoscience and pseudoscience? 4.What is atomic…

A: Social atomism also called as atomism can be defined as the notation given by scientist for atomic…

Q: What is protoscience and pseudoscience? What is atomic theory?

A: Science is the study of nature. It describes the fact that how physical world work. Four main…

Q: Draw the product formed when pentanal (CH3CH2CH2CH2CHO) is treated with each reagent. With some…

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

Q: In Section 1.10, it was stated that 1 mol of sand grains would cover the state of Texas to several…

A: SOLUTION: Step 1: Simple Volume of 1 sand grain = (0.10 mm)3 = 0.001 mm3. 1 mole of sand =…

Q: We experimented on various elements: Mossy Zinc, Aluminum Turnings, Copper Turnings, Activated…

A:

Q: 2. Show that volt per meter is the same as newton per coulomb.

A: Given:- Show that volt per meter is the same as newton per coulomb.

Q: The radius of a lead atom is 175 pm. How many lead atoms would have to be laid side by side to span…

A: Given: Radius of each lead atom = 175 pm = 175 X 10-12 m                          (Since 1 m = 1012…

Q: 12(s) + Zn(s) 21 (aq) + Zn2*(aq)

A: In the Spontaneous reaction,  substance have higher reduction potential is reduced while lesser…

Q: Use the standard entropy data to determine the change in entropy for each of the reactions listed (…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: e mass of 1

A:

Q: aper + watch glass 45.79 46.28-9 whem ed lihw mwo 460d/ g filter paper + copper 1st time filter…

A: Given that,  Mass of hydrated sample, m1 = 1.02 g Mass of dehydrated sample, m2 = 0.91 g Mass of…

Q: D. Empty Volume Determination of Aluminum A sample of aluminum weighs 27.0 g and has a volume of…

A:

Q: 32. In which group do all the elements have similar chemical properties? a) P, S, Cl b) Ag, Cd, Ar…

A: In which set of element have similar chemical properties ?

Q: The radius of a lead atom is 175 pm. How many lead atoms would have to be laid side by side to span…

A: Initially we need to convert Picometer to Millimeter.

Q: The radius of a tantalum atom is 142 pm. How many tantalum atoms would have to be laid side by side…

A: Given: Radius of tantalum atom = 142 pm And total distance given = 2.85 mm.

Q: Complete the table below.

A: Since you are asked for multiple elements, we are entitled to solve first three for you.

Q: a) If sea water contains 3.5% NaCl, by mass, how many grams of NaCl can be obtained from 1.00 gallon…

A: Density of sea water = 1.02 g/mL

Q: Arrange each group in or-der of increasingstandard molar entropy (S°). Explain

A: Entropy is the major of disorderness or randomness.so a gaseous species will have more randomness or…

Q: On average, people use one teaspoon (2.5 g) of instant tea to make a 8-oz glass of ice tea. The…

A: 1 oz of iced tea contains 10 mg of caffeine.Therefore, 8 oz of iced tea contains 80 mg (0.08 g) of…

Q: 7. Name the following compounds a. CI X Br Br b. C. d.

A: According to IUPAC nomenclature, select the longest chain of hydrocarbon which contains the maximum…

Q: (a) CACO; is the chemical formula for calcium carboaate. (b) An acid reacting with a carbonate…

A: 21. (a) CaCO3 is the chemical formula for calcium carbonate.

Q: There are 1.699 x 1022 atoms in 1.000 g of chlorine.  Assume that chlorine atoms are spheres of…

A: Number of atoms in 1 g chlorine = 1.699 × 1022 atoms Number of atoms in 0.5 g chlorine = 0.5 × 1.699…

Q: The radius of a aluminum atom is 143 pm. How many aluminum atoms would have to be laid side by side…

A: Given : Radius of Aluminium atom = 143 pm And length of line to be made = 4.38 mm  Since 1 pm =…

Q: A pure substance A is found to change upon heating into two new pure substances B and C. Substance…

A: A pure substance A is found to change upon heating into two new pure substances B and C. Substance…

Q: Q/ 0.1 g a NaCL , qul Moarity2 L. Na = 23 . CI = 35.45 *

A: Kindly post question in english language from next time. I can't understand your language but…

Q: The radius of a rhodium atom is 134 pm. How many rhodium atoms would have to be laid side by side to…

A: We have to calculate the number of rhodium atoms.

Q: How many of the following elements are metals? Ca Al Sn S As Bi

A: The properties of metals are--- Metals are solid in room temperature (except mercury), they are…

Q: Complete the table below

A: Since you have posted multiple parts, the answer for first three parts are given below. Kindly…

Q: 1. Which is true about the Law of Conservation of Mass? 3. What was one of the tests that Lavoisier…

A: 1. D. Atoms cannot be created or destroyed, only rearranged. The Law of Conservation of Mass implies…

Q: In the figure shown, is a chemical reaction occurring? Yes, because the atoms have rearranged to…

A: A reaction in which reacting atoms chemically combine with each other to form a new substance is…

Q: 4. Who discovered the neutron in 1932? A. Democritus C. Ernest Rutherford B. James Chadwick D.…

A: Mass number Mass number gives the number of protons and neutrons in an atom.

Q: gas. D. Matter with a defined shape and defined volume. E. The formation of new substances by…

A: We have to match the right answer

Q: 2 .What is the 2nd most prevalent element in soil (name, not symbol)?   3. What is the name of the…

A:

Q: The physical basis for life is the carbon atom. This atom   a. is more abundant than silicon.   b.…

A: Carbon is a chemical element with the symbol C and atomic number 6. It's non metallic and…

Q: The radius of a barium atom is 217 pm. How many barium atoms would have to be laid side by side to…

A: Given that,radius of barium atom = 217 pm distance between one atom to another = 2.78 mm 1m = 1x1012…

Q: b. (i) A Group in the modern Periodic Table is completely missing from Newlands' Table. What is the…

A: Comparing Newlands table (law of octave) with modern peridic table, we can easily find these…

Q: The density of MgO is 3.6 g/cm3. The atomic masses of magnesium and oxygen are 24.31 g, and 16 g,…

A: Given that Density of MgO = 3.6 g/cm3 Molecular weight of MgO = (1* 24.31) + (1 *16) = 40.31 g/mol

Q: Explain the process that allowed you to take measurements of mass and volume and determine the…

A: The process that allowed you to take measurements of mass and volume and determine the identity of…

Q: Calculate the mass of Cu in g from 8.20 kg CuFeS2

A: From the chemical formula it is clear that 1 mole CuFeS2 contains 1 mole Cu. Molar mass of…

Q: 1. What is the mass of the water used for this experiment?

A: To solve this problem we will use the mass of empty can and the mass of can and water .

Q: 2 N205 (s) 54 NO, (g) + 02 (g) AG;° (kJ/mol) N2O5 (s) 117.7 NO2 (g) 51.8

A: From the standard Gibbs free energy data □G° = [Total Gibbs free energy of products] - [Total Gibbs…

Q: The nature of the elemental matter depends on which factor in the atom and what factors are added to…

A: Valence electrons are the electrons present in the outermost shell.

Q: A piece of copper contains 6.7×108 atoms. What is the mass of the sample, in units of kilograms

A: molar mass of Cu = 63.55 g/molThis is mass of 6.022×1023 atomsuse:mass of 1 atom = molar…

Q: The radius of a tantalum atom is 142 pm. How many tantalum atoms would have to be laid side by side…

A: The radius of tantalum atom =142 pm=142 x 10-12 m 1 pm = 10-12 m Diameter of tantalum atom =2 x 142…

Q: 65. Name each of the following compounds: c. Ag,S d. MnO, a. CsF b. LiN e. TiO, f. Sr,P2

A: Since you have posted multiple questions with multiple sub-parts, we are entitled to answer the…

Q: The radius of a tungsten atom is 137 pm. How many tungsten atoms would have to be laid side by side…

A: Given :- radius of tungsten atom = 137 pm  To calculate :- number of tungsten atoms in 1.99 mm

Q: Which statements are true? A. There are 11 elements represented in the periodic table by letters…

A:

Q: What is the process that allows you to take measurements of mass and volume and determine the…

A: Answer: Mass Determination: To determine the molar mass of an unknown metal chemically, first, we…

Stereochemistry and Isomerism

Stereochemistry deals with the three-dimensional structure and properties of molecules. It explains the arrangement of atoms and their manipulation within a molecule in a 3D structure. Stereochemistry can be dealt with all types of molecules. Based on the stereochemistry of a molecule, the physical and chemical properties of the molecules vary.