What is the formula of the compound in which the atom combining ratios are: nitrogen : oxygen = 2 : 1 enter elements in the order given.

Q: determine the  abundance in nature of each isotope in percent.

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Q: An element "X" is an alkaline earth metal and reacts with element "Y" which is a halogen. What is…

A: The ionic compound formed when alkaline earth metal reacts with halogen given below.

Q: The number of atoms in 1 dm3 of aluminum is nearly the same as the number of atoms in 1 dm3 of lead,…

A: Density of a substance is given by the ratio of mass and volume of the substance. Write the…

Q: Polymer poly ethyl cyanoacrylate, also known as "Super Glue", has the following composition: 57.59%…

A: Percentage composition of carbon = 57.59 % Atomic mass of carbon = 12.01 amu Molar ratio of carbon =…

Q: What are the ions involved in these elements?

A: A. HgSO4 = Hg^2+ + SO4^2-  So, in HgSO4 the ions involved are : Hg^2+ and SO4^2-.  B. Ca(OH)2 =…

Q: What is the amount, in moles, of each elemental sample? 3.55 g Zn

A: The amount in moles of Zn are to be calculated. Given: Mass of Zn = 3.55 g The relation between mass…

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

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Q: A hypothetical element, E, has two stable isotopes. One isotope has a natural abundance of 66.909%…

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Q: Complete the table below. Where isotopic notation is required, enter the complete isotopic notation,…

A: Species which contain same number of protons and electrons but different number of neutrons are…

Q: Which of the following is an implication of Thomson’s observation that the typeof metal used to make…

A: Cathode rays are defined as the beam of negatively charged particles that originate from negatively…

Q: Potassium has three naturally occurring isotopes (39K, 40K, and 41K), but 40K has a very low natural…

A: The two isotopes of potassium which is more abundant have to be given and explain,

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: In which of these compounds are there twice as many Oxygen atoms as Hydrogen atoms?

A: To find :- The compound having oxygen atoms two times more than the hydrogen atoms.   We can easily…

Q: Write definitions of the terms atomic number and mass number. Which of these can vary without…

A: Atomic number :-  Atomic number is the number of a chemical element in the periodic system, whereby…

Q: Calculate the % by mass C in C4H8O

A: % by mass of C in C4H8O = (mass of C/mass of C4H8O) × 100%

Q: Imagine that you were working in the lab at Amgen (a biotech compan Thousand Oaks) and you discover…

A: Isotopes of elements contains same number of protons but different number of neutrons.

Q: Question mentioned in attached file

A: Chemical symbol of an atom X can be represented as;  ZAX A is the mass number and Z is the atomic…

Q: he average atomic masses of some elements may vary, depending upon the sources of their ores.…

A: Explanation Solution Two substances, the percentage of each isotope, are unidentified. As both…

Q: Define the term monatomic ion?

A: The term monatomic ion has to be defined.

Q: Which of the following elements would be classified as a nonmetal? a.) silicon  b.) francium c.)…

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Q: What is the formula of the compound in which the atom combining ratios are: boron: hydrogen :…

A: Given : The ratio of elements in the compound = Boron : Hydrogen : Chlorine = 4 : 9 : 1

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: 4/Determine the Mass Percentage of each element in the compound Put the first element in the first…

A: The first step of this problem is to calculate the molecular weight of the given compound, followed…

Q: Write any three differences between metals and non-metals on the basis of chemical properties?

A: Metals: Metals are the majority elements in the periodic table. They include transition metals,…

Q: The average atomic masses of some elements may vary, depending upon the sources of their ores.…

A: Given- Mass of 10B =10.0129 amu Mass of 11B = 11.0931 amu Actual atomic mass of B from mineral…

Q: 2. Water is made of two elements, hydrogen, and oxygen. What possible elements could substitute for…

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Q: Why must atomic masses be weighted averages rather than conventional average values?

A: atomic mass is mass of atom which have amu unit .

Q: A 15.21 gram sample of iron is heated in the presence of excess fluorine. A metal fluoride is formed…

A: Empirical formula, where all the elements that constituents a compound is represented by their…

Q: Matter is defined as ....... إجابتك Felite is إجابتك

A: 2. The term matter refers to anything that occupies space and has mass—in other words, the “stuff”…

Q: Helium is a noble gas which does not like to make compounds. As it is a lightweight gas, any Helium…

A: Helium is a noble gas, and a very light one at that. Because it is a noble gas, it doesn’t react…

Q: a certain compound is made up of 2 chlorine atoms, one carbon atom, and one oxygen atom. What is the…

A: A chemical formula is defined as the composition of elements present in the compound in a fixed…

Q: Describe what you think happens on an atomic scale when you push a pencil across a piece of paper…

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Q: 8/Determine the Mass Percentage of each element in the compound Put the first element in the first…

A: Given compound is Ammonia, NH3  Elements present in ammonia are  Nitrogen (N) and Hydrogen (H)…

Q: In ions why not separated by mass only and  why not separated by charge only?

A: Mass spectrometer works in four stages which is ionisation, acceleration, Deflection and detection.…

Q: Hydrogen and oxygen react to form water, together they are a  .... - molecule - compound -…

A: Hydrogen and oxygen are atoms that combine to form water

Q: On another planet, the isotopes of titanium have the given natural abundances. Abundance Mass (u)…

A: Given :  Isotope Abundance Mass (u) 46Ti 78.900 % 45.95263 48Ti 13.800 % 47.94795 50Ti…

Q: Identify as true (T) or false (F): | Minerals separating from flowing water as stony deposits…

A: Since you have posted questions with multiple sub-parts, we are entitled to answer the first 3 only.…

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: 1/Determine the Mass Percentage of each element in the compound Put the first element in the first…

A: Standard data: The molar mass of hydrogen =1 g/mol The molar mass of oxygen = 16 g/mol

Q: Does the product formed during the combustion of magnesium in Test 6 (the ashy magnesium  oxide) to…

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Q: Ammonia is a gas with a characteristic pungent odor. It is sold as a water solution for use in…

A: Mole Moles is a quantity that represents a collection of 6.022×1023 atoms or molecules. The…

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: List two elements found on the periodic table which are liquid at room temperature. (Please note…

A: The two liquid elements on the periodic table at room temperature are Mercury (Hg) and Bromine (Br).…

Q: 1. Given the data in table shown below, calculate the atomic mass of unknown element X. Then,…

A: The average atomic mass of element is equal to the product of the masses of the isotope and its…

Q: A robot spacecraft returned samples from the planetesimal 98765 ALEKS, located in the outer Solar…

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Q: Which of these statements is not correct according to Dalton's atomic theory? O Elements combine in…

A: Since you have posted multiple questions, we are entitled to answer the first only.