When 4.00 g of sulfur are combined with 4.00 g of oxygen, 8.00 g of sulfur dioxide (SO2) are formed.   What mass of oxygen would be required to convert 6.00 g of sulfur into sulfur trioxide (SO3)?

Q: In Example 2-1, we established that the mass ratio of magnesium to magnesium oxide is 0.455 g…

A: We have been provided with the ratio of magnesium to its oxide. Let us calculate other required…

Q: Do both members of the following pairs have the same number of protons? Neutrons? Electrons?…

A: An element is represented by the symbol XZA, where A is the mass number and Z is the atomic number.…

Q: a 500-mg antacid tablet has 105 mg calcium carbonate (MW = 84.3139 g/mol). What is the %(w/w) of…

A:

Q: What THREE elements are rare-earth elements? calcium neodymium rhenium niobium samarium thallium…

A: In the above question the elements which are rare earth metal  among the option provided are…

Q: Which elements are alkaline earth metals?(a) rubidium(b) tungsten(c) magnesium(d) cesium(e)…

A: Alkaline earth metals are the elements present in the group 2 of the periodic table. Their general…

Q: 1. How many calories are released when 100. g of steam condenses? The heat of condensation for water…

A: Given: Mass of water = 100 g The heat of condensation for water = 540 Cal/g

Q: Which of the following elements is the smallest? Oxygen, O (#8) Carbon, C (#6) O Sulfur, S (#16)…

A:

Q: What is the molecular mass of Sodium hydroxide given by the chemical formula “NaOH”. Atomic masses…

A: According to the question the chemical formula of sodium hydroxide is "NaOH"  Molecular mass is the…

Q: Given a 240.0 g sample of sulfur trioxide, how many grams of oxygen are produced, assuming the…

A: Number of moles of SO3 = mass / molar mass Number of moles of SO3 = 240 g / 80.066 g / mol = 2.99…

Q: 8. Which pair of elements do you expect to be most similar in their chemical properties? a) K and Fe…

A: Most similar in their chemical properties

Q: 8 S and S8

A:

Q: 2). How many of the following elements are metalloids? Te Si Xe In Pb Ge

A: Metalloids are those chemical elements which possess the characteristics of both the metals and…

Q: atoms

A:

Q: 1. Atomic Structure. 106 a) 46 Pd*2 b) 232 92 U

A:

Q: 8. A 2.00 g sample of FeF2 x H2O is dried in an oven. When the anhydrous salt is removed from the…

A: Given: mass of FeF2.xH2O=2.00 gmass of FeF2(anhydrous)=0.789 gmolar mass of H2O=18 g/molmolar mass…

Q: Give the noble gas shorthand notation (ex: [He] 2s2 2p1) for U+2

A:

Q: The hydroxides formed by three elements of period 3 are given in the following table. Write the…

A: Period 4 elements for group 1A--K, Potassium                                                2A--Ca,…

Q: Which pair of elements would you expect to exhibit the greatest similarity in their physical and…

A: Periodic table represents the systematic arrangement of elements in which the properties of these…

Q: A hydrogen atom, which has one electron, has a radius 0.7 x 10-10 m. The radius of its nucleus is…

A: Atomic number of hydrogen atom is 1 and consists one proton in the nucleus. And one electron is…

Q: Calculate the number of protons, neutrons, and electrons in 16 g of Si-28. The isotope Si-28 has a…

A: Moles of Si present = mass of Si taken / Atomic mass of Si = 16 / 27.977 = 0.572 approx  Hence the…

Q: When 0.220 g of iron (atomic weight %3D 55.85 g/mol) is burned, 0.341 g of iron oxide is obtained.…

A: Given, Mass of iron = 0.220 gm Mass of iron oxide = 0.341 gm Mass of oxygen = mass of iron oxide -…

Q: 14. Which of the following has 58 neutrons, 45 protons, and 45 electrons? Mo (A: 103; Z: 45) Tu (A:…

A: The number of electrons in an atom is always equal to its atomic number . According to quantum…

Q: What element is “X" give the chemical symbol? а.) X 1s°2s°2p® b.) X²+ 1s°2s°2p°3s°3p®

A: We have to identify  the  element 'X' for the  given two electronic configurations.

Q: Give the name of the elements in each group of three element symbols. a. Au, At, Ag b. N, Na, Ni c.…

A: The name of the given element symbols in each group has to be given.

Q: Rank the masses of the elements from lightest to heaviest. To rank items as equivalent, overlap…

A: Atomic masses of the elements: B : 11 u Cr: 52 u Li: 7 u

Q: Predict the chemical formula for the ionic compound formed by the elements Sr and Cl. 3. Predict the…

A:

Q: Locate each element in the periodic table and classify it as a metal, nonmetal, or metalloid. a.…

A: Titanium belongs to group 4 and is present in d block. It is a metal. Chlorine belongs to group 17…

Q: Which of the following elements is the largest? O Aluminum, Al (#13) O Indium, In (#49) Antimony, Sb…

A: We are authorised to solve only one question at a time. Please post rest of the question separately.

Q: Elements of which of the following groups on the periodic table always occur naturally as monatomic…

A: The groups given are, A) Noble gases B) Halogens C) Chalcogens  D) Pinctogens E) Group 4 A (14)…

Q: An atom is 1.3x10-10 m in diameter. If an atom was 1cm in diameter, how tall would you be (1.78m).

A: The height of a person is 1.78 m when the diameter of an atom is 1.3x10-10 m or 1.3x10-8 cm. Now…

Q: Is the underlined part of the macroscopic domain, or the microscopic domain of chemistry ? A carbon…

A: The term macroscopic refers to the objects that can be seen by the naked eyes. Macroscopic is just…

Q: Gallium has an average atomic mass of 69.72 amu and has two common isotopes 69Ga and 71Ga. If the…

A: An atom is the basic and fundamental unit of matter. An atom consists of electron and the nucleus in…

Q: i do know what else to do, that is the question

A: The law of definite composition states that any chemical compound will always contain a fixed ratio…

Q: 4. The following data were collected for several compounds of nitrogen and oxygen: Compound Mass of…

A: Compound Mass of Oxygen reacts  with 1 g of nitrogen W 0.5711 g X 1.142 g Y 2.284 g…

Q: There are protons, neutrons, and electrons in 147₁ Hs+5

A: Atom is composed of three subatomic particles, which are electrons, protons and neutrons.  Protons :…

Q: Consider a rectangular piece of printer paper that is 8.5’’ x 11’’ (’’ denotes inches). In order to…

A: Given, Dimension of paper  = 8.5’’ x 11’'

Q: A fictitious element X has a molecular weight of 9.46 g/mol. If the volume occupied by one atom of…

A: We have given that the a fictitious element X has a molecular weight of 9.46 g/mole and the volume…

Q: The element Neptunium has a density of 19.60 g/ml. What is the radius of a sphere of this material…

A: Given: Density = 19.60 g/ml = 19.60 g/cm 3 Mass of sphere =70 kg= 70 x 1000 =70000 g  Because one…

Q: if the density of an element 1.5 g/ml with volume 1.8 L, its mass will be .. 2700 O 2.7 O 1200 1.2…

A: Given question is asking about the mass of substance, if density and volume of solution is present .…

Q: Consider the atoms 16O, 18O, 18F, 18Ne, and 20Ne. Some of the following questions may have more than…

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

Q: 5. Which of the following is a species with 12 protons and 10 electrons? a) Ne?* b) Ti2* c) Mg? d)…

A: Number of proton = atomic number Number of electrons =( atomic number) +- charges

Q: What is the symbol of the element in Group 4A(14) and Period 2?

A: Given,  Group number of the element = 4A that is 14  And  Period number of the element = 2  What is…

Q: The mass percentage of oxygen in 5.5 g M9SO.7H;0 equals : a. 57.7% 71.5% c. 63.5% d. 55.8%

A: Mass percent :- The mass (in grams) of an element present in 100 grams of the compound is defined as…

Q: What is the atomic weight for the element that is in group 2A and period 4? What is the atomic…

A: (1) The element in group 2A and period 4 is Calcium whose atomic weight is 20 a.m.u.

Q: A sample of an oxide of antimony (Sb) contained 39.5 g of antimony combined with 13.0 g of oxygen.…

A: Given: Mass of antimony (Sb)= 39.5 g Mass of oxygen= 13.0 g

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

A:

Group 14 Elements

The following elements come under group 14 of the periodic table.