The elements of Group 1-B (Cu, Ag, and Au) are sometimes referred to as the “coinage  metals.” Why? What properties do they have that make them particularly useful for this purpose?

Q: Are Ca, K, Na spectator ions?

A: In a chemical reaction; the substance which involves in conversion is said to be reactant whereas…

Q: Seawater consists of many important elements in the form of salts dissolved in the water. At 25°C…

A: #Q.1: Mass of seawater, m = 1000.0 g * 1 Kg1000 g = 1.000 Kg density of seawater, d = 1.024 kg/L

Q: Q6. What is the radius (in cm) of a cylindrical silicon block (density = 2.03 g/cm3) with the height…

A: The radius of cylindrical silicon block can be easily determined by its density and the total mass…

Q: copper(II) sulfate sodium chloride potassium sulfite calcium nitrate

A: Ions are charged species which can be both positively or negatively charged. These are of two types.…

Q: Give the chemical formula for the compound Aluminum fluoride Iron(III) sulfide Zinc nitrate Barium…

A: A chemical formula is symbolic representation of composition of compound

Q: An ore is O a mixture of two or more metallic elements. a natural source from which a metal can be…

A: The metals can be extracted from the compounds which are occuring in nature in the earth crest. The…

Q: What is a chemical property of sodium?

A: Sodium is an element with atomic number 11 and represented by the symbol Na.

Q: Elemental phosphorus is used in the semiconductor industry. It can be obtained from an ore called…

A: The reaction above can be correctly written as below: 4Ca5(PO4)3 F + 18SiO2 + 30C ----->  3 P4 +…

Q: What % fraction of the electrons would you have to remove from a 5.0 mg sphere iron in order to make…

A: Given:  mass of Fe sphere = 5 mg = 0.005 g charge on sphere= 3C  we know that, atomic mass of…

Q: Which substance will conduct electricity? o Pure water (H2O) o Epsom salt dissolved in water (MgSO4)…

A: Electrolytes: It is a substance that ionizes or dissociates completely into ions when dissolve in…

Q: 1. Fe + CuSO, → 2. Zn + 0,→ 3. Sil, + Mg

A: 1)Fe + CuSO4  -----> FeSO4 + Cu (a type of displacement reaction in which more reactive Fe…

Q: One kind of metallic material consists of 82% Pb, 15.0% sb, and 3.0% Sn. a) how many grams of alloy…

A: The given composition of the alloy is: metalpercentagePb82%Sb15.0 %Sn3.0 % It states that if the…

Q: Given the following data, calculate the mass percentage of copper in the unknown copper oxide sample…

A: According to the question, Mass of empty test tube:…

Q: Which part of the description of a compound or element refers to its physical properties and which…

A: Physical property: Physical property of an element or compound includes chemical composition,…

Q: Suppose you wish to calculate the mass of sulfuric acid that can be obtained from an underground…

A:

Q: Complete the following table.

A: Symbol number of protons number of neutrons number of electrons atomic number mass number net charge…

Q: Describe the PHYSICAL PROPERTIES of the following Specifically, what type of matter is this? (e.g.…

A:

Q: Fe (s) + CUSO, (aq)

A: According to the Law of conservation of mass " all atoms of different elements must be equal on both…

Q: Match each statement in the left column of the table below with a compound on the right. In your…

A: In the given question properties of species are mentioned in column -1 while in column-II species…

Q: Nonmetals are completely OP Positę to metals in a lot of ways. Usually, nonmetals are $4eays by…

A: Element can be classified as metal or non metal or metalloid

Q: A 67.2 gg sample of a gold and palladium alloy contains 3.55×1023 atomsatoms . A) What is the mass…

A:

Q: Select the property that is a characteristic of the group 14 (4A) element carbon. O it forms…

A: Group 14 consists of the following elements: Carbon, C Silicon, Si Germanium, Ge Tin, Sn Lead, Pb

Q: Ca All the calcium reacted in less than 30 seconds. There was a vigorous production of a gas. Fe…

A: We will write the correct order of reactivity

Q: Match each statement in the left column of the table below with a compound on the right. In your…

A: Different elements combined to form different compounds. These are compounds are held together by…

Q: Is there a chemical reaction between copper and silver nitrate? Which elements react, and what is…

A: The chemical formula is a short term notation which is used to represent the no. of atoms present in…

Q: 1. Zn(s) + Ag*(aq) = Zn²+(aq) + Ag(s)

A:

Q: In the chemical equation: Fe203(s) + 2 AI(s) --> 2 Fe(l) + Al20(s) the (I) means O a. solid O b.…

A:

Q: 11. Cro, 12. Ва(С, Н, О,), 13. ICI, 14. РbS, 15. Са, РО,), по

A: Here we have to determine whether the given compounds are binary or not, covalent or ionic compound,…

Q: The most common minerals found in soils are combinations of which four elements, which are also the…

A: A question about elements that is to be accomplished.

Q: potassium iodide + lead (II) nitrate

A: The reactants given are  1) Potassium iodide i.e KI 2) Lead (II) nitrate i.e Pb(NO3)2

Q: A 5.276 g sample of Al-Mg alloy is digested in nitric acid (to Al*3 and Mg"). The solution is…

A: Given that -  Mass of sample of alloy, Al-Mg = 5.276 g  Mass of alumina, Al2O3 = 1.444 g  Molar mass…

Q: 1. Fe:Os (I) + CO (g) –> Fe (1) + CO2 (g)

A: Answer: In normal oxides, oxygen always shows -2 oxidation number and that will be our basis to find…

Q: 4. Cite two possible applications of silver nanoparticles. Explain the role of its nano-size towards…

A: A nanoparticle is a small particle that ranges between 1 to 100 nanometres in size. Undetectable by…

Q: Mass of watch glass and evaporating dish:67.511 g   Mass of watch glass, evaporating dish, and Mg…

A: We can calculate mass of Mg,Cl, product by calculating mass before and after the reaction.

Q: Calculate the mass percent composition of iron for each iron ore: Fe2O3Fe2O3 (hematite), Fe3O4Fe3O4…

A: a) mass % composition of iron in Fe2O3 (hematite). molecular weight of Fe2O3  = 159.69 g/mol…

Q: What is the mass percentage of Na in NaNO₃?

A:

Q: A mixture of potassium chloride and potassium bromide weighing 3.595 g is heated with chlorine,…

A: Given: weight of mixture = 3.595g  Total mass of Kcl after reaction n= 3.129g  To determine: KBr…

Q: S, O, Se, Te

A: Question 1.  Part A: We know that, In group 16 the melting and boiling point increase down the group…

Q: d. CaCO, Zn(OH), f. Ag,SO, е.

A: The question involves naming of the inorganic compounds. there are certain rules to be followed…

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: 7. Pt(NH;),Cl4 8. Fe(CO);

A: Here I have mentioned IUPAC names for the top two molecules     Pt(NH3)2Cl4-…

Q: g. TiO, h. FeCl, i. P,O,

A: PART 6B (g.) TiO2  So, name of the compound is given by as follows- Titanium dioxide Or Titanium(IV)…

Q: (1) (i-Bu);AlH, hexane, -78 S OCH (2) Н,о

A: The major product of the given reaction is below:

Q: Calculate the percentage of Fe in pure iron(II) ammonium hexahydrate: (NH4)2[Fe(SO4)2] x 6H2O

A: The solution is as follows :

Q: Fe(s) + 0,(g) + H,0(1) → Fe(OH),(aq)

A: Balancing above chemical reaction is

Q: 8. A 2.856-g sample of limestone was analyzed for Fe, Ca, and

A: A 2.856-g sample of limestone was analyzed for Fe, Ca, and Mg.

Q: Give the chemical formula for the compound Aluminum fluoride Iron(III) sulfıde Zinc nitrate

A: "Since there are multiple sub-parts in this question and it is not mentioned that which one has to…

Q: Silver (I) Chloride dinitrogen dioxide Vanadium (v) oxide > >

A:

Q: 4. C,H„O̟ C̟H,O CO, 5. Al CUSO, Cu + Al,(SO,)3

A: Solution :    The balanced chemical equation has an equal number of atoms on both sides of the…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".