# How many silver atoms are there in 3.86 g of silver, calculate the number of atoms in each sample a. 18.172g Cr b. 34.782g S

Q: We have found two isotopes of carbon in our samples, the first with mass number 14 and the second…

A: Definition of Isotopes - The isotopes of an elements can be defined as atoms with the same number of…

Q: 1. A scientist collects data on a sample of Lithium. He determines that 92.3% of the sample is…

A: The atomic mass of lithium = 6.938923 amu

Q: Which best describes isotopes? A. Same number of neutrons, different number of electrons B. Same…

A: atoms of the same element have the same number of protons, but some may have different numbers of…

Q: Naturally occurring Metal with average atomic mass 79.7231 consists of two isotopes: 79M with mass…

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Q: As we saw in the previous problem, lithium has two naturally occurring isotopes: Li-6 (natural…

A: The mass which is closest to the atomic mass of Li has to be given.

Q: How many protons (P), neutrons (n) and electrons (e) are present in 18173Ta-3 ? a. 76 p 105 n 73 e…

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Q: What is the mass of each sample? a. 2.75 mol of Fe b. 0.115 mol Al c. 125 mol Si d. 1 Ni atom

A: MASS- Mass is basically defined the quantity of matter in the object. It is measured in grams and…

Q: ow many protons (P), neutrons (n) and electrons (e) are present in 18173Ta-3 ? a. 76 p 105 n 73 e b.…

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Q: Which statement about the three fundamental particles is false? O a. The charge of a proton is equal…

A: Electrons, protons and neutrons are considered as fundamental partials of atom

Q: A sample of a metal has a mass of 27.009 g. It contains 8.257 x 1022 metal atoms. What metal is it?

A: The question is based on mole concept. We have been given mass and number of atoms of metal. we have…

Q: 34. How many protons, electrons and net does Be have? beryllum 4 Ве 9.0122

A:

Q: There are electrons and +2 neutrons in the ion of Cd Atomic number: 48 Mass number : 112 O A. 46, 48…

A: Given ion,    Cd2+ ion    Mass number = 112    Atomic number = 48

Q: Write the symbol for the isotope described. a. 12 protons, 12 electrons, 13 neutrons b. 17 protons,…

A: Note : As per our guidelines we are supposed to answer first 3 parts. please repost other parts as…

Q: A 20.0 g sample of an element contains 3.89 x 1023 atoms.

A: Given:-  Number of atoms = 3.89 × 1023atoms Mass of sample = 20.0g

Q: . Suppose you have a sample of sodium weighing 14.50 g. What mass of potassium would you need to…

A: Atomic mass of sodium=23 Atomic mass of potassium=39 Number of mole=given mass/molar mass So,…

Q: For each atom described, list the number of electrons, protons and neutrons. a. Neutral Ne 1910 b.…

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Q: An isotope of iron has a positive charge of 2 and 24 neutrons. How many electrons does it have? a.…

A: They have the same atomic number and position in the periodic table, but differ in nucleon numbers…

Q: How many carbon atoms are there in 11.4 kg sample of carbon

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Q: Determine the number of atoms of mercury in a 8.332 g sample of pure mercury

A: First Calculate mole= weight/molar mass Atomicity =1 because Mercury excuse as Hg in nature so 1…

Q: Chlorine has two neutral stable isotopes; Chlorine-35 and Chlorine-37. How many electrons are in…

A: The atoms with the same number of protons but different numbers of neutrons or mass numbers are…

Q: Determine the number of protons and the number of electrons in each ion.a. Al3 +               b.…

A: The electronic configuration for a given atom can be defined as the representation of the…

Q: How many protons (P), neutrons (n) and electrons (e) are present in 18173Ta-3 ? a. 76 p 105 n 73 e…

A:

Q: a. Using the average atomic mass of carbon, calculate the mass (in amu) of 138 carbon atoms. amu b.…

A: Note: As per the guidelines solution of 1st question has been made. For the expert solution of…

Q: How many grams of platinum (Pt) contain the same number of atoms as 5.0 g of lithium (Li)? О а. 0.18…

A: Given, Mass of lithium (Li) = 5.0 g Mass (in grams) of platinum (Pt) contain the same number of…

Q: Rubidium has two naturally occurring isotopes, from the following data calculate the value of X?…

A: B. 84.9545 Given that,  Atomic mass isotope of rubidium with 0.7285 fractional abundance = x Atomic…

Q: 35 1. The atomic masses of 17CI (75.53%) 37 and 17CI (24.47%) were 34.968 amu and 36.956 amu,…

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Q: Which statement about the three fundamental particles is false? a. The charge of a proton is equal…

A: Given data:- three fundamental particles Electron, proton & Neutron.  Find false statements…

Q: 1. Complete the table Isotope Mass (amu) Relative Abundance (%) Silicon- 28 27.97693 92.21 Silicon-…

A: For this problem We have to complete the given table based on abundance of isotopes.

Q: a. Using the average atomic mass of carbon, calculate the mass (in amu) of 137 carbon atoms. amu b.…

A: We have to calculate the mass of atoms from the average atomic masses of the given atoms.

Q: Vhich sample contains the fewest atoms? O a. 225 g C O b.50 g Xe O C. 125 g Fe O d. 25 g Ca O e. 50…

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Q: Based on the information gathered from the periodic table seen in Figure 2-H, Magnesium will most…

A: 1) magnesium has an atomic number of 12 which means that it has 12 electrons and 2 electrons in 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: 7. Place the labels chemical symbols, atomic number, and mass number in the shorthand notation…

A: -> The number at down side in symbol is always atomic number . -> The number at upper side in…

Q: Strontium naturally exists as 4 stable isotopes with masses of 84, 86, 87, and 88. Which statement…

A: Elements exist in different isotopic forms and each form has its own abundance.

Q: What is the mass of magnesium fluoride that contains 7.29 × 1024 F atoms?   Relative atomic…

A: Given,  The mass of magnesium fluoride that contains 7.29 × 1024 F atoms is:

Q: How many protons, neutrons, and electrons are in 138Ba ?   a. 56  P, 56 E, 82 N           b. 57  P,…

A: Number of protons, electrons and neutrons can be calculated by using atomic number and mass number.

Q: 410 186 412Z X 410 183 Y 186 Which two are isotopes? A. X and Y B. X and R C. Y and R D. Z and R E.…

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Q: Which combination of protons neutrons and electrons correctly represents a neutral 57 Fe atom a. 26…

A: The question is asking us to identify the correct combination of protons, neutrons, and electrons…

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.