An atom of 131 I contains ________ protons.

Q: Atoms of different elements can have the same number of protons

A: The question is based on the concept of atomic structure. it involves subatomic particles like…

Q: w hydrogen atoms

A:

Q: Static electricity is observed when whic part of the atom is transferred? a. Protons b. Neutrons I…

A: Static electricity is observed when electrons are transferred .  Naturally occurring static is…

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

A:

Q: What is the atomic mass of oxygen-17 (16.9991 amu) at 0.038%

A: Using the formula We can easily get the answer

Q: What is the mass of 5.10*10^21 platinum atoms?

A: A mole represents 6.022x1023 particlesThe 6.022x1023 Number is also known as Avogdro's Number .It…

Q: In a sample of gallium there is 60.2% of gallium-69 (68.9 amu) atoms and 39.8% of gallium-71 (70.9…

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: Question attached

A: When two atoms have same atomic number and different mass number, they are called as isotopes.

Q: Calculate the number of atoms in each sample (express using 4 sigfigs) 34.782g S  12.326g Pt…

A: Mole can be defined as a standard unit for measuring large quantities of very small entities such as…

Q: What came first? protons neutral Atoms or nuclei? which came second?

A: Given What came first? protons neutral Atoms or nuclei? which came second?

Q: 1)the chemical symbol found on the periodic table is ?  2) the number of protons for the product is…

A: 1.Now we know that the number must be same on both the product as well as the reactant Side and we…

Q: 1. The charge required to deposit 40.5 g of Al (atomic mass = 27.0 g) from the fused Al,(SO), is:…

A: here the question is from faraday law :- According to the Faraday law , the masses of different ion…

Q: actual mass of a 37Cl atom is 36.966 amu. Calculate the mass defect (amu/atom) for a 37Cl atom.

A: Mass defect of the atom = [Z(mass of proton + mass of the electron)]+(A-Z) mass of neutron]- the…

Q: Assume silicon has three major isotopes in nature as shown in the table below.Fill in the missing…

A: Given the details of isotopes of Silicon: Isotope Mass (u) Abundance 28Si 27.98…

Q: One atom of an unknown element has a mass of6.66 × 1 0 -23 g. What is the identity of this element?

A: Molar mass is the mass of Avogadro's number (6.022×1023) atoms.

Q: Chemistry focuses on representing the submicroscopic world of atoms. A billion atoms of gold-197…

A: 1 Billion atoms of Gold weigh  = 3.3 × 10-¹³ g

Q: An unknown element is a mixture of 129X and 132X. the average mass of X is 130.79 amu. What is the…

A: Let x be the percentage abundance of 129X and (1-x)  be for 132X Average mass = 130.79 amu  Atomic…

Q: - Part C What is the symbol for the isotope of 55 Fe that possesses 31 neutrons? Express your answer…

A: Isotopes are defined as same element having same number of proton but different number of neutron in…

Q: Explain how Rutherford expanded on Becquerel and Curie's research. Include in your answer how this…

A: There were many models to propose the structure and composition of an atom by various scientists.…

Q: Fluorine 9 F 18.998 Iron 26 Fe 55.845 # Protons: # Electrons: # Neutrons: 10 # Protons: # Electrons:…

A:

Q: What can happen as nuclei decay? A.The atom will donate protons and neutrons to another…

A: Nuclear decay is the process in which unstable nuclei is converted into stable nuclei by releasing…

Q: (27)Al (p,y) (28)Si (40)Ar (n,B') (41)K (14)N (a,p) (17)o (200)Hg (p,a) (6)Li (n,a)

A: Nuclear reaction:

Q: How many carbon atoms are there in 10 Ibs of sugar, CH,,0̟,? 22 11 Select one: a. 159 atoms O b. 8.0…

A: Mass of C12H22O11=10lbs Formula used- 1 lbs=4.54kg 1kg=1000g Mole=mass/molar mass No of carbon…

Q: 1. All atoms of a given element have the same c. number of nucleons. d. number of protons. a. mass…

A: 1. Answer - The correct option is (d) number of proton. All atoms of an element have the same number…

Q: How would you determine the accuracy of an atomic mass?

A: The atomic mass is a weighted average of all of the isotopes of that element, in which the mass of…

Q: 1. Pereent abundance A. Calculate the average Mass of Ni'? 1 100 60 (242351 20 (10%) 38 62 64…

A: A question based on atomic structure, which is to be accomplished.

Q: has a mass about the same as that of a proton has a-1 charge is found in the nucleus is attracted to…

A:

Q: Atomic Number 1A 2A 8A 1 A ЗА C 1 2 3 J Zy 4A SA 6A 7A 4 K P Ad 10 11 12 13 14 15 Ac Ab Ax H. 16 17…

A: It is given that the atomic number of M is 10. The mass number is not given and hence we assume it…

Q: of Protons and Neutrons ir

A:

Q: explain how to get the atomic symbol

A: Atomic symbol is way of representation of a particular element that makes easy handling of elements…

Q: A solid circular cone made of pure platinum (d = 21.45 g/cm3 ) has a diameter  of 2.75 cm and height…

A: Density of a substance is given by the ratio of mass to its volume. Density = MassVolume Volume of a…

Q: I want to know at least some reason why the mass of the Mgo formed could be lower that expected

A: Interpretation -  To tell about a reason why the mass of the MgO formed could be lower that expected…

Q: ny atoms a

A: The number of moles is determined as the mass of the substance upon its molar mass. The number of…

Q: 5) Find the mass of 0.02 moles of K,Cr,O,. 7'

A:

Q: ny atoms c

A:

Q: The electrical charge on the nucleus (from just the protons)  of  5928Ni2+ (it should read 59 over…

A: We've to calculate the electrical charge on the nucleus (from just the protons)  of  5928Ni2+.

Q: 41) A teenage child in Wisconsin throws a chunk of sodium metal into a lake consisting of freshwater…

A: Given: mass of sodium = atomic number of fluorine = 9 kg = 9000 g density of water = 1.01 g/mL…

Q: On the fictional planet Zeus, boron occurs as 55.46% of 10B (atomic mass = 10.01 u) and 44.54% of…

A:

Q: What is the mass number of Hg from the periodic table?

A: Answer:- Mass number:- It is defined as the total number of proton and neutron or can be defined as…

Q: Give the number of protons, electrons, and neutrons for flourine-19

A: An atom consists of three sub particles: protons, electrons and neutrons.The atomic number of a…

Q: atoms of gold (Au) In a 3.7-gram sample, there are (A) 1.1 x 1022 atoms of gold (B) 3.2 x 1025 atoms…

A: Given, mass of Au = 3.7 g Molar mass of Au = 196.97 g/mol

Q: Potassium (Z = 19) has three primary isotopes: K-39, K-40, and K-41. 1) The half-li fe of K-40 is…

A: Given: Half life of K-40 = 1.248 X 109 years Initial activity of K-40 = 820 Ci And final activity of…

Q: 17. How many atoms of silver are present in a 75 gram pure sample? c. 1.34 x 10-20 d. 4.87 x 10-27…

A: Since you have posted multiple questions , as per guidelines we can answer one per session . If you…

Q: Naturally occurring iodine has an atomic mass of 126.9045 amu. A 12.3849 g sample of iodine is…

A:

Q: Atoms

A:

Q: Natural rubidium has the average mass of 85.4678 u and is composed of isotopes85 Rb (mass = 84.9117…

A: Mass of the Rb = 86.913 amu. Given data: 85.4678 amu is average mass of the Rb Mass of 85Rb =…

Q: 100% Normal text Oxygen 12 ... 3. The atomic masses of elements are generally not whole numbers.…

A: Concept is based on isotopes:     As per our guideline we have to answer first question only.