Explain how Dalton’s atomic theory offered a convincing explanation of the observation that mass is conserved in chemical reactions.

Q: how many helium atoms are there in a helium blimp containing 536 kg of helium?

A: moles and number of atoms are related to each other by Avogadro's numberSo, one mole of every…

Q: a. Number of Electrons b. Number of Neutrons c. Number of protons d. Mass number e. Valances

A: In periodic table , the elements are arranged in order of their atomic numbers.  Atomic number of…

Q: Explain how J. J. Thomson’s determination of the charge-to-mass ratio of the electron led to the…

A: Thomson Atomic model introduced us to the world of subatomic particles. He discovered the first-ever…

Q: Consider two compounds. Compound A contains 15.7 g of sulfur and 18.6 of fluorine. Compound B…

A: Mass of fluorine in compound A = 18.6 g Mass of sulfur in compound A = 15.7 g Mass ratio of fluorine…

Q: How many miles of gold atoms do 3.45 x 10^24 gold atoms constitute

A: This problem can be solved by knowing that one mole comprises of 6.022×1023 atoms.…

Q: What was the hypothesis tested by Rutherford?

A: For representing an atom, the New Zealand physicist, Ernest Rutherford, came up with the Rutherford…

Q: Consider 100.0-g samples of two different compounds consisting only of carbon and oxygen. One…

A: According to the law of multiple proportions when two elements react together to form more than one…

Q: Describe a mass spectrometer in 50 words (or formulas or chemical equations, etc) or less.

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

Q: In our modern view of matter and energy, is the law of mass conservation still relevant to chemical…

A: In our modern view of matter and energy, the law of mass conservation still relevant to chemical…

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: a. 25.9% N, 74.1% O b. 43.4 % Na, 11.3% C c. 18.8 % Na, 29.0% C

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Calculate the mass of 5.70 X 10^22 tungsten atoms.

A: Given No of atoms of tungsten = 5.70 x 1022   Also, Molar mass of tungsten =  183.84 g

Q: What is the mass of 3.91x1024 oxygen atoms? Select an answer and submit. For keyboard navigation,…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: What is the mass number of an atom that contains a. 42 protons, 42 electrons, and 53 neutrons? b. 24…

A: a. 42 protons, 42 electrons, and 53 neutrons? b. 24 protons, 24 electrons, and 28 neutrons? To find…

Q: What four fundamental assumptions about atoms and matter make up modern atomic theory?

A: Introduction:     All matter is composed of atoms. Atom is a smallest indivisible particle that…

Q: Atoms are the smallest spherical particles that make up any matter. If 6.0x10^23 atoms of aluminum…

A: Avogadro’s number is used to determine the number of atoms present in 1 mol of an element.…

Q: A sample of compound X (a clear, colorless, combustible liquid with a noticeable odor) is analyzed…

A: Given information, compound X - 14.13 g carbon and 2.96 g hydrogen compound Y - 19.91 g carbon and…

Q: There are 1.699 x 1022 atoms in 1.000 g of chlorine.  Assume that chlorine atoms are spheres of…

A: Number of atoms in 1 g chlorine = 1.699 × 1022 atoms Number of atoms in 0.5 g chlorine = 0.5 × 1.699…

Q: A sample of chloroform is found to contain 12.0 g of carbon, 106.4 g of chlorine, and 1.01 g of…

A: Total mass of chloroform in first sample = mass of C + mass of H + mass of Cl = (12.0+106.4+1.01) =…

Q: The volume of a single tungsten atom is 1.07 x 10-23 cm³. What is the volume of a tungsten atom in…

A:

Q: Samples of compound X, Y, and Z are analyzed, with results shown here. Do these data provide…

A: Law of definite proportion: In any chemical compound the component elements are in fixed ratio by…

Q: How many electrons are in gold atom? Does protons also take part in chemical reaction?

A: Gold is a chemical element with the symbol Au and atomic number 79, making it one of the higher…

Q: Two samples of sodium chloride are decomposed into their constituent elements. One sample produces…

A: Given: Two samples of sodium chloride. One sample gives 6.98 g of sodium and 10.7 g of chlorine.…

Q: Which of the following is not part of Daltons atomic theory? 1) Atoms of different elements…

A: Daltons atomic theory: All matter is comprised of tiny, definite particles called atoms. Atoms are…

Q: A sample of chloroform is found to contain 12.0 g of carbon, 106.4 g of chlorine, and 1.01 g of…

A: According to law of constant proportional, any chemical compound will always contain the elements in…

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: Use the conversion factor 1 amu = 1.66054 x 10-24 g to answer the questions. How many atomic mass…

A: Given: 1 amu = 1.66054×10-24 g

Q: 2) The spherical atomic nucleus of potassium has a radius of about 4 x 10-13 cm.; 6.02 × 1023 of…

A:

Q: 4. Who discovered the neutron in 1932? A. Democritus C. Ernest Rutherford B. James Chadwick D.…

A: Mass number Mass number gives the number of protons and neutrons in an atom.

Q: What is the mass in grams of 8.22 x1023 magnesium atoms, each having a mass of 24 amu? 1 amu =…

A: Since the number of atoms given is 8.22 x1023

Q: The ratio of sulfur to oxygen by mass in SO2 is 1.0:1.0. Find the ratio of sulfur to oxygen by mass…

A: Molar mass of sulphur = 32 g/mol Molar mass of Oxygen = 16 g/mol

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: Give the number of protons (p), neutrons (n), and electrons (e) in a) 15N3- b) 40Ca2+ SNER

A: Protons are positively charged particles. Electrons are negatively charged particles. Neutrons are…

Q: 1. The diameter of a neutral Helium atom is about 1 x 102 pm. Suppose we could line up Helium atoms…

A:

Q: Chemical equations must be balanced to satisfy the A) law of definite proportions B) law of multiple…

A: A Balanced chemical reaction happens when The number of different atoms of elements on reactant side…

Q: Which of the following ideas is NOT part of Dalton's Atomic Theory?

A: Atoms are destroyed during a chemical reaction is not part of Dalton atomic theory.

Q: Magnesium has three naturally occurring isotopes with masses of 23.99, 24.99, and 25.98 amu and…

A:

Q: What contribution did John Dalton make to atomic theory? * He discovered that every atom was…

A: Answer John Dolton atomic theory  :- All matter element,…

Q: Detailed information about John Dalton should include some biographical information (socioeconomic…

A: John Dalton was the youngest of their three offspring who survived to adulthood.Dalton was born into…

Q: A sample of compound A (a clear, colorless gas) is analyzed and found to contain 4.27 g carbon and…

A: Given: For compound A Mass of carbon = 4.27 g Mass of oxygen = 5.69 g For compound B Mass of carbon…

Q: The volume of a single lead atom is 2.24×1023 cm³. What is the volume of a lead atom in microliters?…

A: Here the volume of a single lead atom is given in cm3 and we have to convert it into microliters.…

Q: Which statement about a neutron is not correct? A It can be present in different numbers in atoms of…

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

Q: A sample of chemical X is found to contain 5.0 grams of oxygen, 10.0 grams of carbon, and 20.0 grams…

A:

Q: some chlorine atoms have an atomic mass of 37, while others have an atomic mass of 35. What is the…

A: The mass number of an atom is the sum of proton and neutrons present in that atom.  Mass number =…

Q: Explain in your own words, by writing a short paragraph, how the atomic theory predicts the law of…

A:

Q: What were the challenges that John Dalton went through  including how he got their knowledge to be…

A: John Dalton most famous discoveries include Dalton atomic theory Dalton Law of Partial Pressure.(…

Q: Which of the following experiments helped to support Dalton’s atomic theory? A)Thomson’s cathode…

A: Dalton's Atomic Theory 1) All matter is made of atoms. They are indivisible and indestructible. 2)…

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.