b. x The element's symbol is It has protons. It has neutrons. c. 20X The element's symbol is It has protons. It has neutrons.

Q: 1. What is the difference between carbon-13 and carbon-14? a. The number of electrons b. The number…

A:

Q: Which statements about subatomic particles are false?a. Protons and electrons have charges of the…

A: Which statements about subatomic particles are false has to be given.

Q: (1) How many protons, neutrons, and electrons are in C ? 16 (2) How many protons and electrons are…

A: An atom basically consists of proton, neutrons and electrons. The protons and neutrons are present…

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: An unknown element (Uk) has three isotopes, seen in the table. One of the percentage values is…

A:

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

A:

Q: A certain element X has four isotopes. 0.5600% of Xhas a mass of 83.91343amu. 9.860% of Xhas a mass…

A: Since element X is an isotope. Isotopes are that element which has the same atomic number but has…

Q: Selenium consists of five naturally occurring isotopes: Se, Se. Se, Se, and Se. - Part A None of…

A:

Q: A 20.0 g sample of an element contains 4.95 x 1023 atoms. Identify the element. a) Cr b) o c) Mg d)…

A: An element is a pure material in chemistry that consists only of atoms with the same number of…

Q: (i) What is the mass of a neutron? (ii) What is the charge of a neutron?

A: Neutron is a subatomic particle as like proton. It is found in the nucleus along with proton and it…

Q: Isotopes of the same element have different mass numbers? true or false

A: isotope are  two or more species of element  with the same atomic number and position in the…

Q: 1. 1. An element X have throe isotopes X", X and X The percentage abundance of X is 90% and its…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: 5. Lithium exists as 2 stable isotopes in nature and data is given below. 6.015122 amu x 7.016004…

A: If A1 and A2 are mass numbers of two isotopes and X1 and X2 are their percentage  abundance then…

Q: Consider bromine, which occur as a mixture of two isotopes: bromine-79, with natural abundance of…

A: Given: The abundance of Br-79=50.7% The abundance of Br-81=49.3% The atomic mass of Br-79=78.92 amu.…

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

A:

Q: (c) Calculate the mass percent of protons in the nucleus of each of these isotopes. % of protons in…

A: The isotopes given are 105B and 115B.

Q: Is the statement inconsistent with Dalton’s atomic theory as it was originally stated? Why? The…

A: Yes,the statement that formation of a compound often involves the destruction of of one or more…

Q: 1. What is the name of John Dalton's theory? 2. What are elements made of? 3. An atom of hydrogen…

A: As you have posted a question with multiple parts, we will solve the first three parts for you. To…

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…

A:

Q: how many protons and neutrons are in 37Cl?

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

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

A: The average Atomic mass of any element is the average of atomic masses of different isotopes present…

Q: Tungsten is a rare metal found naturally on earth almost exclusively combined with other elements in…

A:

Q: an unknown element is a mixture of isotopes 120X and 122X. the average atomic mass of X is…

A:

Q: Please answer question a & b both.

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

Q: natural abundance mass isotope (amu) [% [% "Li 6.0151 "Li 7.0160

A: Atomic mass is the mass of one atom of an element. As an element can have numerous isotopes, the…

Q: Naturally occurring elements are originally formed: O A. Inside the core of stars, or when stars…

A: Naturally occurring elements as the name suggest, it is formed naturally not by any man made actions

Q: A completely made up element called Krystogen has two naturally occurring isotopes. The atomic…

A: Every atom in periodic table has some atomic mass and atomic number. When atomic number of two…

Q: The element silver has two naturally occurring isotopes: 109Ag and 107Ag with a mass of 106.905 amu.…

A: The mass of 109Ag is to be calculated.

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: Element R has three isotopes. The isotopes are present in 0.0825, 0.2671, and 0.6504 relative…

A: Average atomic mass: The average atomic mass of an element is the sum of the masses of its isotopes,…

Q: A sample of Ti weighs 79.2 grams. Will a sample of Xe that contains the same number of atoms weigh…

A: Given: weight of Ti=79.2 g The molar mass of Ti=47.867g/mol We need to calculate the total number of…

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

A:

Q: An imaginary element Xq consists of two isotopes having masses of 100.0 amu and 102.0 amu. A sample…

A: When an element exists in the form of two or more than two isotopes, the term average atomic mass Is…

Q: 5.3) The isotope lithium-7 has a mass of 7.02 amu and a percent natural abundance of 92.6 %. The…

A: • The values provided in the question are:-       i) Abundant percentage of lithium-6 isotope, P1 =…

Q: OBo and F have the same number of neutrons. O"c and "N are isotopes of each other because their mass…

A: Atomic number = number of protons =number of electrons (for neutral element) Atomic mass = number of…

Q: What are the symbol and name for an element whose average atoms have a mass that is 38.8% of the…

A: mass of an average Chromium atom =51.9961 u Now we have to calculate 38.8% of the mass of an average…

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

A:

Q: Boron has only two naturally occurring isotopes. The mass of boron-10 is 10.01294 amu and the mass…

A: Two or more distinct chemical substances of one chemical element containing equal numeral of protons…

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

A: The average mass of a carbon atom is 12.011. There are three isotopes of carbon. C-12, C-13, and…

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…

A:

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: he image shows a representative sample of 5050 atoms of a fictious element, called lemonium (LeLe).…

A: Given: The atomic mass of Le-19 = 19.0134 u The atomic mass of Le-17 = 17.4629 u The atomic mass of…

Q: A copper wire weighs 1.312 g is 2.15 mm in diameter and 40.5 mm long. The atomic mass of copper is…

A:

Q: An unknown element has two naturally occurring isotopes. Isotope 1 has a mass of 121.0 amu and an…

A: Following equation will be used to solve this equation,

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.