The seven most abundant ions in seawater make up morethan 99% by mass of the dissolved compounds. They are listedin units of mg ion/kg seawater: chloride 18,980; sodium 10,560;sulfate 2650; magnesium 1270; calcium 400; potassium 380;hydrogen carbonate 140.(a) What is the mass % of each ion in seawater?(b) What percent of the total mass of ions is sodium ion?(c) How does the total mass % of alkaline earth metal ions com-pare with the total mass % of alkali metal ions?(d) Which makes up the larger mass fraction of dissolved com-ponents, anions or cations?

Q: If the molecular mass of an oxide of nitrogen is 108 and 4.02 g of N combine with 11.48 g of O, what…

A: Given, Given mass of nitrogen = 4.02 g Molar mass of nitrogen = 14.01 g/mol Given mass of oxygen =…

Q: Give the number of atoms of the specified element in a formula unit of each of the following…

A: a) The given compound is C6H5COONH4 The number of a hydrogen atom is 9 The molecular mass of the…

Q: v, the number of v of Rf is 104 and its v is 267. Therefore the number of protons is One of the…

A:

Q: Because many ions and compounds have very similar names,there is great potential for confusing them.…

A: The correct formulas of the compounds are -

Q: the number of copper atoms in a 3.0g lump of copper is 2.8x1022 .how many electrons present in the…

A: Number of copper atoms = 2.8 × 1022  We need to determine number of electrons present.

Q: A certain metal, M, forms two oxides, M2O and MO. If the percent by mass of M in M2O is 73.4%, what…

A: The answer is given below

Q: The radii of the lithium and magnesium ions are 76 pm and 72 pm, respectively. Which compound has…

A:

Q: hydrogen phosphide can be decomposed to give phosphorus and hydrogen in a mass ratio of 10.32:1.00.…

A: the molecular formula of this substance is PH3 and the name of this compound will be phosphine.

Q: Certain kinds of zeolite have the general formula M2O·Al¿O3'ySiO2'wH2O, where M is an alkali metal…

A: Concept introduction: Zeolites are the compound having hydrated form of aluminosilicate. Mass% is…

Q: the mass of OO is approximately 16 gg. What is the whole number multiple that describes the…

A: Given as, Mass of Sulphur in SO = 32 gms Mass of Oxygen in SO = 16 gms Mass of Sulphur in SO2 = 32…

Q: Would it be possible to determine the percentage of oxygen in NaCIO3?

A: The given compound is = NaCIO3 The percent of oxygen in this compound is =?

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: Which of the following are pure substances? Explain.(a) Calcium chloride, used to melt ice on roads,…

A: A pure substance is a substance that contains the same types of atoms or molecules. They are made of…

Q: Identify the mass law that each of the following observationsdemonstrates, and explain your…

A: Concept introduction: Law of definite proportion: According to this the ratio of the elements…

Q: Iron exists in nature as a mixture of predominantly three isotopes: 26Fe (53.94 amu), 56 neFe (55.93…

A:

Q: A mass spectrometer is an instrument that allows scientists to determinethe presence of elements in…

A: The elements are arranged as the periodic function of atomic numbers.  The elements are arranged in…

Q: Iron exists in nature as a mixture of predominantly three isotopes: ⁵⁴₂₆Fe (53.94 amu), ⁵⁶₂₆Fe…

A: We have to calculate the percentage of rarest of three isotopes.

Q: What is the % molecular mass of Iron in Fe2S3?

A: The percent mass of an element in a compound can be calculated by using the following formula:

Q: 2. In a chemical atomic mass determination, the tin content of 3.7692 g of SnCl4 was found to be…

A: In SnCl4 one Sn atom combine with 4 chlorine atom. Given mass of SnCl4 is 3.7692 g and mass of Sn is…

Q: in chemistry class, a group of students dtermined the mass-t-charge ratio for an electron to be 5.64…

A: Given: mass to charge ratio = 5.64×1012 kg/C Charge of electron = 1.605×10-19 C   Note:There is typo…

Q: The semi-precious stone turquoise is a hydrate and with the chemical formula CuAl₆(PO₄)₄(OH)₈･4 H₂O.…

A: We are required to find out the mass percent of aluminium, oxygen and water in the…

Q: Give the chemical symbol, including superscript indicating mass number, for (a) the ion with 22…

A: The chemical symbol for any species is written as :   ZXA where Z is the atomic number and A is mass…

Q: (a) In the certain hydrated salt MSO34H2O, the mass percentage of H2O is 44.71%. Identify the…

A: The question is based on the concept of  Stoichiometry. we have been given a hydrate salt. we know…

Q: The radius of an atom of gold (Au) is about 1.35 Å. (a) Express this distance in nanometers (nm) and…

A: It is given that :Radius of gold atom = 1.35 Å

Q: What mass of nickel would contain 5.66 x 1021 atoms?

A:

Q: An element consists of two isotopes and has an average atomic weight of 85.561 a.m.u. The abundance…

A:

Q: The elements nickel (Ni) and boron (B) form two binary compounds with the following compositions:…

A:

Q: With the advent of techniques such as scanning tunneling microscopy, it is now possible to “write”…

A: Given:Surface is 20 atoms high and 14 atoms wide.Number of Platinum atoms = 20 atoms × 14 atoms =…

Q: 1.The formula mass of the compound between gallium (III) and oxalate ions in g/mol is: Group of…

A: The formula mass of a compound is the total average atomic masses of each atom which is showed in…

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: Give the number of atoms of the specified element in aformula unit of each of the following…

A:

Q: What is the % mass of oxygen in citric acid, C6H807?

A:

Q: Calculate the number of atoms of hydrogen (H) in 323 cm3 of the colorless gas ethylene at 0 °C and…

A: 1 mole of C2H4 (ethylene) has 2 moles of carbon and 4 moles of hydrogen in it.1 mole of any…

Q: The smallest unit of charge is -1.6 x 10-19 C, which is the charge in coulombs of a single electron.…

A:

Q: 2.77/The radii of the lithium and magnesium ions are 76 pm and 72 pm, respectively. Which compound…

A: Given, Radii of Li = 76 pm  Radii of Mg = 72 pm  Which has more ionic attraction = ?

Q: Calculate the exact masses of the ions C5H8O1 and C6H12 1, both of which have a nominal mass of 84.…

A: The organic compounds can be identified by various characterisation techniques. For example, NMR,…

Q: The density of liquid mercury is 13.69 g/cm. How many atoms of mercury are in a 1.614E1 mL sample?

A: density = massvolume mass = density × volume mass of liquid mercury = 13.69 g/cm3 ×1.614 ×101 mL =…

Q: 7. Isotopes, (a) Argon has three naturally occurring isotopes, 36Ar, 38Ar, and 40Ar. What is the…

A:

Q: Which of the following are pure substances? Explain.(a) Calcium chloride, used to melt ice on roads,…

A:

Q: Mass spectrometry is more often applied to moleculesthan to atoms. We will see in Chapter 3 that the…

A: When we study the interaction of electromagnetic radiation with matter then this study is known as…

Q: The mass ratio of sodium to fluorine in sodium fluoride is 1.21:1. A sample of sodium fluoride…

A: The amount of sodium produced on decomposition of sample NaF is 28.8g. The mass ratio of sodium to…

Q: How many atoms (total) are present in a 3.45 x10-2 m3 sample of Al2O3, which has a density of 3.95…

A:

Q: The anticancer drug Platinol (Cisplatin), Pt(NH₃)₂Cl₂,reacts with the cancer cell’s DNA and…

A: The amount of a particular compound present in a solution is expressed by the various concentration…

Q: 2-75. A sample of rutile, an ore of titanium consist- ing principally of TiO,(s), was found to be…

A: The question is based on the concept of quantitative analysis. we have to calculate how much…

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: Boron, atomic number 5, occurs naturally as two isotopes, 10B and 11B, with natural abundances of…

A: Isotopes are elements with the same number of protons but differ in the number of neutrons. The…

Q: Boron trifluoride is used as a catalyst in the synthesis of or-ganic compounds. When this compound…

A: When the compound involves boron-11 and fluorine-19 isotope, the molecular mass of the compound is;…

Q: A 67.2 g sample of a gold and palladium alloy contains 3.07×1023 atoms . What is the mass…

A: Given : Mass of sample = 67.2 g And total number of atoms = 3.07 X 1023 atoms Assuming the moles of…

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.