One gram of metal burns in air to give 1.27 g of tin oxide. What is the formula of the oxide?

Q: What is the mass percent of iron in iron(II) phosphide

A: Fe2P Molar mass of Fe2P=142.66gm/mole Atomic mass of Fe = 55.85gm/mole

Q: The explosion of an atomic bomb releases many radioactive isotopes, including strontium-90.…

A: The position of the element strontium in the periodic table is marked in the diagram of the periodic…

Q: The lanthanide elements react with oxygen to give compounds of the type Ln2O3 (where Ln stands for a…

A: Empirical formula :- The simplest formula which shows only the relative number of atoms of different…

Q: How many electrons make up 0.75 coulomb of charge?

A: The charge of electrons is quantized. The charge on one electron is given by: charge on one electron…

Q: The U.S. Environmental Protection Agency (EPA) sets limits on healthful levels of air pollutants.…

A: The number of lead atoms can be calculated as follows:

Q: Write the chemical formula for the following compounds. a. barium nitrate b. strontium chlorate…

A: [a.] Ba(NO3)2 [b.] Sr(ClO3)2 [c.] (NH4)3PO4 [d.] CoS [e.] HgI2 [f.] CuCN

Q: 4. A sample of 2.12 g of copper was heated in an oxygen atmosphere until no further change took…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: Distinguish between molecular substances and ionic substances in terms of their composition?

A: Ionic compounds have strong ionic bonds while molecular substances have covalent bonds. Molecular…

Q: A 0.455 g sample of magnesium is allowed to burn in 2.315 g of oxygen gas. The sole product is…

A:

Q: What is the chemical formula for each substance mentioned? (A). Sodium hydrogen carbonate  (B).…

A: What is the chemical formula for each substance mentioned?

Q: A metal (M) forms an oxide with the formula M2O. If the oxide contains 16.99% O by mass, what is the…

A: The given data contains, mass of Oxygen = 16.99 g. Thus mass of M= 100-16.99 = 83.01 g.

Q: What is the mass percentage of phosphorus in a sample of 8.53 phosphorus oxychloride containing a…

A: Mass percentage of phosphorus = 20.16 %

Q: Which of the following are poor conductors of heat and electricity? O Transition elements O Halogens…

A: Elements can be classified into 3 forms, that is metals, non-metals, and metalloids. Metals are the…

Q: A chemist heats a 6.4 sample of hydrated calcium sulfate, and finds that in the process, 3.4 grams…

A: Given data Ammount of hydrated calcium sulphate = 6.4 g Amount of water vapour lost = 3.4 g Reaction…

Q: The chemical formula for calcium bicarbonate is: Ca(HCO,), Са How many carbon atoms are in each…

A:

Q: atoms

A:

Q: Write chemical formulaS (a) Na" and NO, (b) Fe+ and CO, (c) Ba* and NO, (d) Al and CIO,

A:

Q: Name the following: CI, CIO, CIO, CIO ambined with other elements) I, (Br,I,N,CI,H,O,F.) NAMU

A: ate ----> ic  ite ----> ous  ide -----> hydro -ic  We have to name the following acid given…

Q: What is the Process that produces elements in the stars? Give at least 10 sentece

A: Elements are formed by nuclear fusion. Stars create new elements in their cores by squeezing…

Q: Which two of these elements would you expect to show the greatest similarity in chemical and…

A: The elements which are expected to show the greatest similarity in chemical and physical properties…

Q: Write the correct formula to distinguish between calcium sulphide and calcium hydrogen sulphide?…

A: Molecular formula of calcium sulphide is CaS.Molecular mass of CaS = molar mass of Ca + molar mass…

Q: How many of the following elements are nonmetals? F Са H Ве Ne 4 3 O 1 2

A: How many elements are  non- metals among the following : F, Ca , H , Be , Ne , O  = ?

Q: How do I calculate the theoretical mass percent of barium in a sample of BaCl2*2H2O?

A: Generally, the %mass is determined by dividing the species mass with total mass of sample which then…

Q: Determine the number of atoms that would make up a 78.8 g sample of Tellurium.

A:

Q: Nitrogen forms more oxides than any other element. Thepercents by mass of N in three different…

A: Empirical Formula: The empirical formula of a compound is the simplest whole number ratio of each…

Q: If you forget to account for the vapor pressure of water in your buret, how will this affect your…

A: Consider a chemical reaction between the Mg and HCl, one mole of H2 produced when 1 mol of Mg reacts…

Q: Calculate the number of atoms in sample. 1.87 g Bi

A: Calculate the number of moles of Bi Number of moles of Bi = Given mass of BiMolar mass of Bi= 1.87…

Q: a. What would be the formula of the compound formed by a reaction of chlorine with calcium (Ca)? b.…

A: We have reaction of chlorine and calcium , chlorine with strontium , we have to predict the formula…

Q: Calculate the mass, in kg, of sample.  5.48x10^29 lithium atoms

A: Molar mass of lithium is 6.94 g/mol 6.023 x 1023 atoms have mass = 6.94 g of lithium

Q: How many Si atoms are there in a 63.4 gram sample of elemental Si? atoms

A: Given the mass of the Si sample = 63.4 g  We have to find the number of Si atoms.  We can proceed…

Q: an ionic compound?

A: Ionic bond is formed by the complete transfer of valence electron(s) between atoms. It is a type of…

Q: Boron and sulfur form two binary compounds. The first contains 0.2247 g B/1.000 g S, and the second…

A:

Q: You have 3.31 L of water that contains 25 mg/L of PO43-. What is the total amount of phosphate in…

A: • The values provided in the question are:-    i) Density of phosphate ion solution,d  = 25 mg/L…

Q: 3. What type of substances are magnesium chloride, sodium chloride, and calcium chloride?

A: The question is based on the concept of chemical bonding. we have to identify the nature of…

Q: What chemical test(s) could you use to distinguish solid barium chloride from solid barium sulfate?

A: The barium Chloride is Soluble in water . The barium sulfate is not Soluble in water . By using the…

Q: How many electrons is the element Strontium (Sr) likely to gain or lose?

A: Strontium is represented by Sr. The atomic number of Sr is 38. Sr Electronic configuration = [Kr]…

Q: How many grams of lithium will combine with 24.0 g of sulfur to form the compound LizS?

A:

Q: How many grams of lithium will combine with 27.9 g of sulfur to form the compound Li2S?

A:

Q: What is the chemical formula of hydrogen

A: To find: Chemical formula of hydrogen

Q: What is the mass of one atom of I? O 6.641 x 10-23 g O 4.745 x 10-22 g O 2.107 x 10 22 g O 3.443 x…

A: To determine the mass of 1 atom of I, do the following : 1) Determine molar mass of the substance.…

Q: The chemical formula for calcium bicarbonate is: Ca(HCO,), How many carbon atoms are in each formula…

A: Chemical formula represents each compound with a symbol for each element present in it followed by a…

Q: an oxide of iron has the formula Fe3O4. what mass percent of iron does it contain?

A: Molar mass of Fe = 55.845 g/mol.Molar mass of O = 15.999 g/mol.

Q: Explain the principle of the distillation process?

A: Distillation method is used to separate two miscible liquids having different boiling points without…

Q: A cylindrical piece of pure titanium (Ti, density=4.506 g/cm^3) has diameter d=1.15 cm and length…

A:

Q: An aluminum-containing compound has the formula Mg, Al,0, and is 44.98% oxygen by mass. What is the…

A: Given: mass percent of O = 44.98 % Formula of compound: MgxAlyO4 molar mass of O = 16 g/mol molar…

Q: Calculate the number of atoms in a 2.33 x 10' g sample of silicon.

A: Avogadro’s number or Avogadro’s constant relates the molar mass and the physical mass of an element,…

Q: A 1.512-gram sample of aluminum metal was burned in the presence of oxygen gas, forming 2.857 grams…

A: Given,  1.512 g of Aluminium burns in oxygen gas to give 2.857g of binary oxide.

Q: 8+83= %3D Oxygen Carbon %3D

A: Combination reaction: A combination reaction is a type of chemical reaction in which two reactants…

Q: Phosphorus is obtained primarily from ores containing calcium phosphate. If a particular ore…

A: Given information: The mass percent composition of calcium phosphate is 57.8% The amount of…

Q: A certain compound is made up of one phosphorus (P) atom, three bromine (Br) atoms, and one oxygen…

A: The given compound contains one phosphorus atom, three chloride atoms and one oxygen atom. The…