How many electrons are necessary to produce a charge of -1.2 C? Express your answer using two significant figures.

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

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Q: An atom of calcium is represented by 12C.. How many neutrons are in the nucleus of this atom?…

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Q: The number of atoms in 1 dm3 of aluminum is nearly the same as the number of atoms in 1 dm3 of lead,…

A: Density of a substance is given by the ratio of mass and volume of the substance. Write the…

Q: What are the main ideas in Dalton’s atomic theory? How do they help explain the laws of conservation…

A: Dalton’s atomic theory ideas are as follows All matter is made up of tiny constituents called…

Q: In Millikan's experiment, the charge on each drop of oil was measured in coulombs. Imagine the same…

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Q: What is the mass number of an ion with 106 electrons, 159 neutrons, and a +1 charge? Express your…

A: Since it is an ion, the number of electrons is calculated with the expression given below in which…

Q: Describe the process of determining the number of Subatomic particles in Atoms?

A: An atom is the smallest invisible and indivisible particle of matter. However, an atom still…

Q: n= 3, me = –2 Express your answer as an integer. ΑΣφ Number of electrons =

A: The value of principal quantum number (n) is 3 and magnetic quantum number (ml) = -2.

Q: A certain element XX has four isotopes. 0.5600% of XX has a mass of 83.91343 amuamu. 9.860% of XX…

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Q: In a naturally occurring sample, 19.8% of boron atoms have five neutrons and 80.2% have six…

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Q: An element has the following natural abundances and isotopic masses: 90.92% abundance with 19.99…

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Q: How many electrons make up a charge of 56nC? If these are made of copper atoms, how many atoms would…

A: The charge is always quantized. The number of electrons can be determined as follows: Number of…

Q: The atomic weight of bromine is 79.904, yet no atom of bromine weighs 79.904 amu. Why is this true?

A: Given : The atomic weight of bromine is 79.904, yet no atom of bromine weighs 79.904 amu.

Q: Sulfur forms several compounds with fluorine. Upon decomposition, sample one produces 4.45 g of…

A: Given information is:                   Sample 1 →Decomposition F(4.45grams) + S (1.25grams)…

Q: Which symbol represents the atom having 28 protons and 34 neutrons in its nucleus?

A: Atomic number: The atomic number (represented by the letter Z) of an element is the number of…

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

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Q: Is it possible for 2 Carbon atoms to have different mass numbers? How?

A: Yes, it is possible for 2 Carbon atoms to have different mass numbers.

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

A: The particles utilized to form any particular atom are named "subatomic particles" and such…

Q: What is the average atomic mass of element X if it exists as 19.90% with a mass of 10.18 and 80.10%…

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Q: Fill in the gaps in the following table: Symbol P3- Protons 35 49 Neutrons 45 66 118 Electrons 46 76…

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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: Imagine an alternate reality. The Thomson cathode ray experiments arrived at a charge to mass ratio,…

A: Here, we have to determine mass of electron.

Q: Complete the following table. Put the full symbol, e.g. 37^Cl- symbol 605^W^8+ 37^Cl-   protons…

A: To complete the table, symbol 605W8+ 37Cl-   protons     5 neutrons     5 electrons      5…

Q: What is the symbol for the isotope of "Fe that possesses 31 neutrons? Express your answer as a…

A: To find: The symbol of the isotope of  55Fe which posses 31 neutrons.

Q: Which scientist suggested that atoms combine in different whole-number ratios to form compounds but…

A: Dalton explain first of all the Atomic theory of atom. In 1808 he put forward a theory which is…

Q: The chemical formula for the amino acid glycine is CHŞNO2. Which of the following statements about…

A: Which of the statement is false ?

Q: Calculate the mass of a gold-197 atom using the information from question 9 and the masses of the…

A: The ratio of mass to the volume of the solution is known as density.

Q: Write a symbol of an unknown or hypothetical element, then put on the proper place its atomic number…

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Q: If a sample of a difference compound decomposes into 0.429g of carbon and 0.57g of oxygen,what is…

A: The mass of carbon and oxygen are given as 0.429 g and 0.57 g. The ratio of mass of Oxygen and…

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: Which statement about subatomic particles are true? Electrons are attracted to protons.

A: Electrons are negatively charge and protons are positively change particle, so by this opposite…

Q: An atom of copper has a mass about four times greater than that of an atom of oxygen. What choice…

A: Mass of copper atom = 4 x mass of oxygen atom

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: Devise a system of chemical symbols that is easy to use by answering the questions below. Look up…

A: For writing chemical symbols one or two letters are used and first one is written in capital letter…

Q: The smallest unit of charge is -1.6 x 10-19 C, which is the charge in coulombs of a single electron.…

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Q: What is the Principle of Constant Proportions?

A: Principle of constant proportion is also known as as law of definite proportion. It says that the…

Q: How many protons and electrons are there in a neutral atom of each of the following elements? Part A…

A: The atomic number of an element tells about the number of electrons and protons present in an…

Q: Identify as true (T) or false (F): | Minerals separating from flowing water as stony deposits…

A: Since you have posted questions with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: (1. On the second floor of Kent Laboratory a chemistry student in 111B finds that 15.20 g of…

A: Given information:Mass of nitrogen = 15.20 gMass of oxygen for different compounds = 17.37 g, 34.74…

Q: Enter the following information. Enter all numerical answers as numbers, i.e. "1", not "one. Hint:…

A: Atomic  mass(A) : is the mass of atom . A= proton + neutron.  Number  of proton = number of…

Q: Phosphorus-31 forms an ion expressed as 31P3-.  What is the required change in the number of…

A: Concept introduction: Atom is smallest indivisible particles. Atom has subatomic particles,…

Q: How many electrons are necessary to produce a charge of -1.0 C? What is the mass of this many…

A: SOLUTION: Step 1: An electron has a charge of -1.6 ×10-19 C. The no of electrons necessary to…

Q: Which of the following statements are true of chemical reactions? a. The number and types of atoms…

A: A chemical reaction will occur between two or more reactants, and during the reaction, law of…

Q: Abundances 0.005% 0.720% 99.275% O a. 238.028 O b. 234 O c. 237 O d. 237.80 Relative masses…

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Q: How many protons, electrons and neutrons does Cl1?

A: In the question, we have been given a halide ion and we need to calculate the number of 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.