A fictional element has 2 isotopes and an atomic mass of 67.18 amu. If the first isotope is 66 amu and the second isotope has a mass of 70 amu, which isotope has the greatest natural abundance?

Q: A sample of element X has two naturally occurring isotopes. The isotope X-45 makes up 35.8% of the…

A: Isotopes are species having same atomic number but different mass number.  Given: The percentage of…

Q: Naturally occurring chlorine (Cl) consists of two isotopes. One of the isotopes has a mass of 34.969…

A: Isotopes have same atomic number but different atomic mass or mass number. Atomic number is equal to…

Q: A sample of element Z has two naturally occurring isotopes.  The isotope Z-24 makes up 68.9% of the…

A: Interpretation: We have to calculate average atomic mass.

Q: Accordingly, which of the following statements is wrong?    A) The mass of an aluminum atom is…

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Q: Bromine has two naturally occurring isotopes, Br-79 and Br-81. Given that on the planet Saturn the…

A: To determine which of the isotope is the most abundant on Saturn.

Q: . An element has three stable isotopes with masses of 27.977 amu, 28,976 amu, and 29.973 amu. The…

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Q: 8) What kind of formular is C,H,O, consider as? A) Empirical formula B) Moleculr formula C)…

A: Protons and neutrons are present inside the nucleus and electrons are revolving around the nucleus…

Q: The figure attached here is a representationof 50 atoms of a fictitiouselement with the symbol Ntand…

A: There are various forms of the element which differ in molecular mass and same atomic number, these…

Q: Find the mass of 236 atoms of tungsten in Kg

A: Tungsten is a chemic element having atomic number 74. Chemical symbol of tungsten is 'W'  According…

Q: ilicon has three common isotopes, with the masses and isotopic abundances shown elow: licon-28 --->…

A: Given-> M1= 27.98 u.        P1=0.882% M2=28.98u.           P2=0.018% M3=29.97 u.

Q: I am working on question 25 of chapter 2 in the chemistry openstax second edition.  The question is…

A: The equation is correct. In the equation x is the fraction of isotope with atomic mass 10.0129 amu…

Q: Carbon exists as 3 isotopes. It is 88% C-12, 1% C-13 and 11% C-14. What is the average atomic mass…

A: average atomic mass= isotop% multiplied by atomic mass /100

Q: Indium has two naturally occurring isotopes: 113In, with an atomic weight of 112.904 amu; and 115In,…

A: Given: Atomic weight of 113In isotope = 112.904 amu Atomic weight of 115In isotope = 114.904 amu…

Q: 7. 12.01 g of carbon has approximately 602,214,129,000,000,000,000,000 atoms. What is the…

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Q: 2.5 million atoms of particular element have a mass of 8.33X10^-16 grams. What is this element?

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Q: an abundance of 2.365%. What is the abundance of the first isotoper a. 4.479% b. 6.957% d. 80.913%…

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Q: Argon (Ar) has three naturally occurring isotopes namely: Ar-36, Ar-38, and Ar-40. a) How are these…

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Q: What are isotopes? What is the percent natural abundance of isotopes?

A: Isotopes are stable as well as radioactive in nature.

Q: Boron has two possible isotopes. Based on the average atomic mass on the Periodic Table (10.81 amu),…

A: Boron is an inorganic element with atomic no. 5. It exists in two different isotopes, .e. Boron-10…

Q: Naturally occurring uranium consists of two isotopes, whose masses are shown below: Isotope Mass…

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Q: Suppose a new element is discovered and it has two stable isotopes. One isotope has a mass of 71.123…

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Q: A sample of alumminum foil contains 7.5*1023 atoms. What is the mass of the foil?

A: Given : Number of aluminium atoms in the foil = 7.5 X 1023

Q: Antimony (Sb), has two naturally occurring isotopes: Sb-121 that has a percent abundance of 57.30 %…

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Q: Please answer question a & b both.

A: Average atomic mass can be determined by the equation given below:

Q: A 7.36 g sample of copper is contaminated with an additional 0.51 g of zinc. Suppose an atomic mass…

A: Total weight of the sample = 7.36 + 0.51 = 7.87 g Fraction of Copper in the sample can be calculated…

Q: 3) In a far away land and long ago, a series of experiments were carried out. Three samples of…

A: In 2) Use law of constang proportion Divide the both Kalium and pyron masses We see that A same and…

Q: A certain element XX has four isotopes. 5.845% of XX has a mass of 53.93961amuamu.…

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

Q: At some point in the future, nuclear chemists have synthesized two stable isotopes of bohrium.…

A: Since average mass of the element is given so we can easily calculate the fraction of each isotope…

Q: An element has two naturally occurring isotopes the first isotope has an abundance of 30.37% and a…

A: With data's given Initially we are finding percentage abundance of another(second) isotope and then…

Q: A sample of aluminum foil contains 8.00×10238.00×1023 atoms. What is the mass of the foil?

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Q: On earth, tin has 10 different stable isotopes. The heaviest,  124Sn makes up 5.80% of naturally…

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Q: There are two isotopes of Beryllium: Be-9 and Be-11. A chemist examines a sample of 250 Beryllium…

A: If A1 , X1 and A2 , X2 are atomic mass and percentage abundance of two isotopes of an element then…

Q: What are the charge and mass of?:  a)  a singly ionized sodium atom, Na2+ (??????: 2311??, ????=…

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Q: The element argon has three isotopes and an average atomic mass of 39.948 u. Idenitfy the most…

A: Element Ar having three isotopes one is Ar-36, second is Ar-38 and last one is Ar-40  Ar-36 have…

Q: Variations in average atomic mass may be observed for elements obtained from different sources.…

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Q: There are two isotopes of an unknown element, X-19 and X-21. The abundance of X-19 is 10.93%. Now…

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Q: The element argon has three isotopes and an average atomic mass of 39.948 u. Idenitfy the most…

A: Given that, Average  Atomic mas s of At=39.948 amu

Q: ow to describe isotopes in my own words

A: By using definition of isotopes.

Q: SECTION 2: WHY DOES A MOLE HAVE A DIFFERENT MASS? PART A: WATCH THE VIDEO to fill in the blanks and…

A: To fill in the blanks on the information about atom

Q: the isotope Si-28 has a mass of 27.977amu .Calculate the number of moles in 14 grams of Si-28

A: We will use the formula to calculate number of mole Number of moles = Weight (g) / Molar mass Molar…

Q: 14. Selenium-75 is used in the diagnosis of disorders related to the pancreas . How many (a) protons…

A: In a neutral atom the number of electrons and protons are same.

Q: Boron has two naturally occurring isotopes, boron-10 with a mass of 10.0129 amu and boron-11 with a…

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Q: A new synthetic element is found to have two isotopes. One isotope has an abundance of 68.2% and a…

A: Given: Abundance of 1st isotope = 68.2% Abundance of 2nd isotope = 31.8 % Atomic mass unit of 1st…

Q: Suppose a new element is discovered and it has two stable isotopes. One isotope has a mass of 70.387…

A: It is given that there are 2 isotopes of an element with percent abundance and atomic mass as…

Q: the atoms listed below, which has the largest mass?   A. all have the same mass B. lead C. uranium…

A: Atoms which have more number of neutrons and protons have greater mass because mass is due to…

Q: A atom X has two naturally occurring isotopes. One isotope has a natural abundance of 71.99% with a…

A: Mass of isotope can be calculated using formula: Atomic mass of X = (mass of isotope 1 × %isotope 1…

Q: Silicon has three naturally occurring isotopes: 92.23% of Si-28 with an atomic weight of 27.9769…

A:

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.