3. How many protons (P), neutrons (N) and electrons (e) are present in Os² that has mass number 190 and atomic number 79.

Q: The two isotopes of potassium with significant abundance in nature are 39K (isotopic mass 38.9637…

A: Isotopes are atoms of same elements which have same atomic number but different mass number. There…

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: The atomic masses of 6 Li and 7 Li are 6.0151 amu and 7.0160 amu, respectively. Calculate the…

A: The isotopes of Lithium are Li6  and  Li7 whose atomic masses are 6.0151 amu and 7.0160 amu…

Q: During nuclear decay a 238 U atom can break apart into a helium 4 atom and one other atom. Assuming…

A: In the problem statement it is given that 238U undergoes nuclear decay to give a helium-4 atom and…

Q: Element X has three naturally occurring isotopes. The masses (amu) and % abundances of the isotopes…

A:

Q: Argon has three naturally occurring isotopes, 36Ar, 38Ar, and 40Ar. What is the mass number of each?…

A: To find: The mass number, number of protons, number of neutrons, and  number of electrons present in…

Q: A sample of CH2F2 with a mass of 19 contains atoms of F. O 2.2 x 1023 O 9.5 9 3.3 x 1024 4.4 x 1023…

A: The molar mass of C = 12g/mol The molar mass of H = 1g/mol The molar mass of F = 19g/mol

Q: Two compounds of Cl and X are found to have molecular masses and % Cl, by mass, as follows: 137…

A: In first compound, Cl is 77.5 % and the total mass of the compound is 137 u. Calculate the mass of…

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

A: After the decomposition of sodium fluoride, the mass of fluorine produced is calculated by using the…

Q: How many Atoms are there in 6CO2

A: We know that atoms are the smallest unit of matter.

Q: A sample of CH 2F 2 with a mass of 19 g contains atoms of F. 38 в) 3.3х 1024 c) 2.2 x 1023 D) 9.5 E…

A:

Q: Suppose that atomic masses were based on the assignment of a mass of 12.000 g to 1 mol of carbon,…

A: SOLUTION: Step 1: One Dalton is defined as one-twelfth the mass of one mole of carbon-12 isotopes.…

Q: How many protons, neutrons, and electrons are in a Sr2+ with a mass number of 88?

A: We are given Sr2+ on having mass number, (A)= 88.

Q: How many carbon atoms are in a pure diamond (all carbon) with a mass of 52.00 mg? A. 4.330 x 103 O…

A: Given: Mass of carbon = 52.00 mg = 52×10-3 g (since 1 g = 103 mg) Atomic mass of carbon = 12 g/mol

Q: A 3.23 g sample of calcium sulfide was decomposed into its constituent elements producing 1.80 g of…

A:

Q: Chlorine has two naturally occurring isotopes, 35Cl and 37Cl. What is the mass number of each…

A: To find: The mass number of each isotope. Number of protons, neutrons and electrons are present in…

Q: Question attached

A:

Q: A sample of Fe(H2PO4)3 that contains 12 000 oxygen atoms must also contain how many phosphorus…

A: Given Number of oxygen atoms = 12000 To find number of phosphorus atoms

Q: 2. How many Sulfur atoms would be present in 32.5 moles of Sulfur?

A: Here,  Questions given moles and apply the value of Na , calculate the no of atom Na value is…

Q: is NO3- a polyatomic or monatomic ion? How many total atoms are present in this ion?

A:

Q: One mole of copper has a mass of 63.5 grams. Approximately how many atoms of copper are present in…

A: Given  Number of mole = 1 mole  Number of atoms of copper = ?

Q: Calculate the molecular mass or formula mass (in amu)of each of the following substances: (a) CH4,…

A: Since you have posted question with multiple subparts, we will solve first three subparts for you.…

Q: How many hydrogen atoms are there in 8.75 g of C,H,NO,? Select one: a. 23 4.79x 10 b. 3.22x 1023 с.…

A: Given: Mass of C2H7NO2 = 8.75 g Molar mass of C2H7NO2 = 77.08 g/mol

Q: What is the mass of 1 mole of calcium atoms? (the values may be rounded differently than your…

A: 1 mole of calcium atom means 1 atom of calcium.

Q: How many oxygen atoms are there in a single formula unit of Al2(SO4)3?

A: The given molecule is Al2(SO4)3.

Q: The ratio of the mass of O to the mass of N in N2O3 is 12:7. Another binary compound of nitrogen has…

A: The given ratio of mass O to the mass of N in N2O3 is 12:7 Mass of O in N2O3 = 3x16 amu…

Q: What if a new element, Tyserium (Ty), was discovered and was found to have two isotopes, Ty-331…

A: Average atomic mass can be calculated by using the formula: MTy=(% abundance of of…

Q: What is the molecular mass in amu of copper(I) sulfate? Use these values from the periodic table…

A: The answer to the following question is given as:

Q: How many peaks would be observed on a mass spectrum for H2S+ ion? Hydrogen has two stable isotopes,…

A: We have to tell the number of peaks observed on a mass spectrum for H2S+ ion

Q: How many carbon atoms are in 2.65 x 1023 molecules of C,H,?

A:

Q: How many of EACH element are there in this chemical formula? 2H,SO, H: S: O:

A: In the given, the following formula is provided: 2 H2SO4 The Coefficients inform us about the…

Q: The average atomic mass of carbon is 12.011 amu. Assuming you were able to pick up only one carbon…

A: Given that, the average mass of carbon is 12.011 a.m.u. The given mass of any of the carbon isotopes…

Q: How many protons, neutrons and electrons are in the N^3– ion with a mass number of 14?

A: The atomic number of an element can be defined as the number of protons present in the nucleus of…

Q: A sample of glucose, C6H12O6, contains 1.240×1021 carbon atoms. How many atoms of hydrogen does it…

A:

Q: How many moles of neon would there be in 7.59 x 1025 neon atoms?

A: Avogadro's number (N) = 6.022 x 1023 atoms/mole No of moles = No of atoms / N                    =…

Q: 3- How many kinds of hydrogen atoms are there in the following molecules?

A: In the carbon compound the different kinds of hydrogen atoms depends on the type of carbon atoms.…

Q: What are the formulas of the following substances? (a) PCI;; Molec. mass = 137.3 amu (b) Nicotine,…

A: Molar mass is defined as an average mass of atoms present in the chemical formula. It is the sum of…

Q: What does an atom gain or lose when ions are produced? A)protons B)neutrons C)electrons

A: Option (C)

Q: Argon has three naturally occurring isotopes, ³⁶Ar, ³⁸Ar, and ⁴⁰Ar. What is the mass number of each?…

A: The mass number (A) of atom is the sum of number of protons and neutrons and the atomic number (z)…

Q: What amount of CuSO4•5H,O, in moles, does this mass represent? mass = 1.787 g %3D X mol resubmit…

A: Given : Mass of CuSO4.5H2O = 1.787 g And molar mass of CuSO4.5H2O = 249.69 g/mol.

Q: How many moles of NF3 contain 2.55 x 1024 fluorine atoms?

A: We have to calculate the moles of NF3.

Q: 1. How many atoms of nitrogen are present in 8.98 grams of nitrogen trifluoride?     2. How many…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: 2. How many GRAMS of bromine are present in 9.78×1021 molecules of carbon tetrabromide? grams of…

A: Mole is defined as the unit of measurement for the amount of substance in the International System…

Q: A sample of TNT, C7H5N3O6 , has 7.97 x 1021 nitrogen atoms. How many hydrogen atoms are there in…

A: The details solution for this is provided below in attach image.

Q: Chlorine has two naturally occurring isotopes, ³⁵Cl and ³⁷Cl.What is the mass number of each…

A: Number of proton present in a neutral element = Number of electron present in that neutral element =…

Q: Give the number of electrons for the following ions. Mass number 52 24Cr+3 35Br 80

A: Given :-   24Cr+3  35Br-  To calculate :-  Total number of electrons in these ions.

Q: 2. How many MOLES of exygen are present in 2.91 grams of carbon monoxide? moles

A: We have to calculate moles of oxygen present in 2.91 grams of carbon monoxide.  Molar mass of…

Q: what mass (in mg) does 2.63 moles of nickle have?

A:

Q: Imagine that you are given information about an element X which has two naturally occuring isotopes.…

A:

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.