The 18O:16O abundance ratio in some meteorites is greater than that used to calculate the average atomic mass of oxygen on earth. Is the average mass of an oxygen atom in these meteorites greater than, less than, or equal to thatof a terrestrial oxygen atom?

Q: C) Justify each of the followings: 1) Nitrogen is very unreactive 2) Graphite conducts electricity…

A: (1) Nitrogen  is very unreactive as it contains a triple bond between it in the case of a molecule…

Q: Directions: Complete the table below. Hypothetical Mass No. No. of p+ No. of n No. of e- Atomic no.…

A: A pure substance that is made up of a no. of atoms having equal no. of protons in its nucleus is…

Q: 5 g of anhydrous strontium nitrate is added to a beaker and exposed to the air. After several hours…

A: The percentage of water in hydrated sample is given as : Percentage of water = ( mass of water /…

Q: Co

A: Isotopes : if two same element have same atomic number but atomic masses are different then we can…

Q: Lithium has two stable isotopes, 6Li and 7Li. If a sample is composed of 48.0% of the lighter…

A: Average mass of an element is defined as the atomic mass of the element calculated by multiplying…

Q: Ph 2. (Across) Heaviest element that a star can fuse. (symbol) Ph 4. (Across) In IUPAC naming this…

A: Since you have asked multiple questions that are different, we will solve only one question for you…

Q: Define the term Neutron-to-Proton Ratio?

A: To find: The Definition of Neutron-to-proton ratio

Q: Some properties of element Y are listed. It reacts with hydrochloric acid to make hydrogen gas. It…

A: 1. Mg +2HCl  → MgCl2  + H2 2. Mg  + H2O → MgO + H2 Magnesium burns in steam to produce white…

Q: Calculate the packing fraction, mass defect and energy released in the formation of the argon atom.…

A: The packing fraction, mass defect and energy released in the formation of the argon atom are to be…

Q: How to calculate the relative atomic mass (6.015122) of 6Li, from the atomic mass of Lithium?

A: In the given question we have to calculate the relative atomic mass of Lithium.  we know that,…

Q: Determine the number of protons and the number of neutrons in isotope. 20882Pb

A: In 20882Pb :

Q: what mass of sodium is also produced?

A: Given :- 2Na3N → N2 + 6Na  Mass of N2 produced = 29.7 g  To calculate :-   Mass of sodium (in g)

Q: III. What is the neutron-proton ratios of following elements? Which of the elements will be more…

A: In this question, we will determine the Neutron/Protons ratios for these three Element then Identify…

Q: What is the atomic mass of oxygen-16 (15.9949 Amy) at 99.757%

A:

Q: A diatomic gaseous mlolecule that contains 17protons per atom is reacted with a solid element that…

A: You are going to form an ionic compound which has charges on their individual ions.

Q: What did the Mercury (II) oxide reactant look like, and what did the products of the decomposition…

A: Mercury(II) Oxide looks like red solid. When it was heated to higher temperature, it will produce…

Q: Y What element is represented in question 33? O Sodium O Boron O Carbon O Sulfur

A:

Q: Consider the following data for the hypothetical element Smileonium, So. What is the average atomic…

A: Given data for the hypothetical element Smileonium: We have to calculate the average atomic mass of…

Q: Silver has two isotopes that are common  in nature. Ag - 107 and  Ag - 109. What  makesthese  two…

A: The solution is given below -

Q: in nature, element X is found as a mixture of two isotopes, one with mass number 107 and the other…

A:

Q: 6. The chloride of an unknown element, X, is a liquid at 20 °C. This chloride reacts with water,…

A: A question based on periodic trends and properties that is to be accomplished.

Q: To start off your experiments in magnetism, you've decided to buy 423 moles of whichever elemental…

A: 1 pound =453gm If I start magnetism with  Fe, Fe molecular weight =55.8 gm/mol We need 423  mole Fe.…

Q: How many protons are contained in a circular puddle of liquid mercury that is 6.25 inches wide and…

A: In the given question we have to calculate the number of proton contained in a circular puddle of…

Q: 18.5 How many moles are in a 2.40 cm × 2.40 cm × 2.40 cm cube of copper?

A:

Q: The largest element of the following is O Tungsten O Molybdenum O Germanium O Krypton O Chromium

A: As we go from left to right and top to bottom in a periodic table there is a change in the…

Q: 6.Examples of acidic oxide and neutral oxide respectively are: Carbon monoxide and sulphur dioxide O…

A: The examples of acidic oxide and neutral oxides respectively have to be given. An acid is formed…

Q: The oxides of nitrogen are very important components inurban air pollution. Name each of the…

A: Nitrogen is the most abundantly found gas in our Atmosphere with 78.09% by volume.

Q: Iodine (I) would have chemical properties most similar to which of the following elements Te Rb…

A: Generally we know In periodic table there are 7 periods and 18 groups. Now in a group, all elements…

Q: Unit 9: Compounds - PS How many atoms of aluminum (Al), sulfur (S), and oxygen (0) are in each…

A: Given compound has molecular formula , Al2(SO4)3

Q: What charge would exist on chlorine (#17) after it reacts with hydrogen (#1)?

A: The correct option is(d) i.e partial negative. The electronegativity of H = 2.20  The…

Q: Part B A sample of N2 at STP with a volume of 55.1 mL contains 2.43x10-3 mol. What mass of Oscium,…

A:

Q: Of the elements listed below, which one would be a poor conductor of heat and electricity? a) Mg b)…

A: Which element among the following Mg, CS, Se, Sn & Zn   is poor conductor of heat and…

Q: mass spectrometer is being used to separate common oxygen-16 from the much rarer oxygen-18, taken…

A:

Q: Consider Cr-54, Fe-54, Fe-58 and Ni-58 , which of this are isobars and which are isotopes

A:

Q: Write balanced equations of the following reactions and identify the x.             1.  8034 Se…

A: In the balanced nuclear reactions, the total atomic number and the total mass number should be the…

Q: There are two naturally occurring isotopes of europium, 151Eu(151.0 amu) and 153Eu(153.0 amu). If…

A: Given information:Two isotopes of europium, 151Eu (151.0 amu) and 153Eu (153.0 amu)Atomic mass of Eu…

Q: What is the percent abundance of the rarest of three iron isotopes

A: Introduction: We have to tell the rarest abundance of iron in three isotopes.

Q: The process of iron combining with oxygen to form rust is considered a chemical change because rust…

A: Rusting It is an oxidation reaction. The iron reacts with water and oxygen to form hydrated…

Q: 7. which isotope of phosphorus kept under water red Black white violet

A: Answer :- White  -------------------------------------------------------------------------

Q: Determine the mass percentage of F in C6H11OF3. A. 36.50% B. 37.33% C. 39.54% D. 40.67% E. none of…

A: Mass of one mole of Carbon, Hydrogen, Oxygen, and Fluorine are calculated as follows,

Q: Calculate the dimensions in (mm) of a cube containing 1 mole of solid phosphor Given: Density of Pe…

A: Molar Mass of P = 30.97 g/mol Density of P = 1.82 g/cm3  Volume of cube = (side)3  Side of cube = ?

Q: The isotope of plutonium "Pu is used to make thermoelectric power sources for spacecraft. Suppose…

A:

Q: A researcher wants to experiment with an element that reacts like phosphorus (P) but has a greater…

A: Phosphorous is a 15 group element. The atomic number of phosphorous (P) is 15 and its atomic mass is…

Q: Nitrobenzene CH5NO2 (molar mass=123.11 g/mol), is quantitavely reduced to aniline C6H5NH2 with…

A: Given data mass of Impure nitrobenzene sample = 0.507 g mass of tin = 1.044 g mass of residual tin…

Q: . The 0:"O abundance ratio in some meteorites is greater than that used to calculate the

A:

Q: 19 Which of the following statements is correct about one mole of ethane gas, C2H4 and one mole of…

A:

Q: 165 21. Identify the neutron-to-proton ratio for the isotope 67H0 and determine if the isotope is…

A: Identify the neutron-to-proton ratio in the given nuclide--