Use Dalton’s theory to explain why potassium nitrate fromIndia or Italy has the same mass percents of K, N, and O

Q: 200 words, explain of what are atoms composed?

A:

Q: How many  electrons are in chlorine Cl.

A: The atomic number of an element tells the number of electrons in it. The atomic number of chlorine…

Q: Explain how the law of definite proportions applies to compound.

A: In chemistry, a number of laws are proposed t explain the nature of compounds, molecular, or ions.…

Q: Part C What is the formula of gold(III) sulfate? Express your answer as a chemical formula. Part D…

A:

Q: A hydrate of magnesium sulfate has a mass of 13.52 g. The sample is heated until no water remains.…

A:

Q: A 49.8 g sample of water (H2O) contains 5.57 g of hydrogen. What mass of oxygen is contained within…

A: Solution:- 2H2O -> 2H2 + O2       Given data:- 49.8 g sample of water contains 5.57 g of…

Q: Consider two salt samples, 10.0 grams of Li2SO4 and an equal mass, 10.0 g, of Na2S2O3. Atomic…

A:

Q: Which of Dalton’s postulates about atoms are inconsistent with later observations? Do these…

A: In 1808 John Dalton has provided the first atomic theory. He has stated that all matter is made up…

Q: What is the formula for barium nitrate?

A: Barium  Symbol - Ba Group number - 2  Valency =2 Nitrate ion has net -1 charge

Q: Heavy water is produced by using the rare isotope deuterium, Nwhich hydrogen-2 (H) replaces the…

A: Given,

Q: Use Dalton’s theory to explain why potassium nitrate from India or Italy has the same mass percents…

A: Use Dalton’s theory to explain why potassium nitrate from India or Italy has the same mass percents…

Q: Using triangles to represent one type of atom and circles to represent another type of atom, draw…

A: Given: Using triangles to represent one type of atom and circles to represent another type of atom,…

Q: Calculate the mass of carbon in a 1-carat diamond that contains 7.56×10^22 atoms of carbon.

A: Since moles = number of atoms / Avogadro number Avogadro number = 6.022 X 1023  => moles of…

Q: Who discovered the noble gas argon?

A: The elements in a modern periodic table are arranged in an increasing order of their atomic number.…

Q: How many atoms of Helium can a balloon that has a 25 cm diameter hold? The density of Helium is 1.18…

A: The mole (abbreviated mol) is the SI measure of quantity of a “chemical entity,” such as atoms,…

Q: how many electrons are in oxygen

A:

Q: What is atomicity

A: Atomicity is a term which is used to represent the number of atoms present in any molecule or…

Q: A sample of trifluoroacetic acid, C2HF3O2, contains 32.1 g of oxygen. Calculate the mass of the…

A: Given,  Mass of O in a sample of C2HF3O2 = 32.1 g Calculate the mass of C2HF3O2 sample = ?

Q: Using scanning tunneling microscopy, scientists at IBM wrote the initials of their company with 35…

A: 1 mole of xenon = 131.293 gm 1 mole of xenon = 6.022 × 1023 atoms. 6.022 × 1023 atoms of xenon have…

Q: Explain why atomic masses are not whole numbers.

A: The atomic masses are an important quantity of each element. Each element of the periodic table will…

Q: how many electrons in bromine

A: We know that Bromine is a chemical element with atomic number 35. The symbol used to denote bromine…

Q: "Lithium has two isotopes. Lithium-6 has an actual mass of 6.015 g/mol and lithium-7 has a mass of…

A: Given: There are two naturally occurring isotopes of lithium. Molar mass of isotope 1 i.e. lithium-6…

Q: What

A: The atomic mass of Al is 26.98, so 1 mol of Al atoms has a mass of 26.98 g.

Q: Summarize indicating Dalton major contribution to the atomic theory.

A: Dalton’s atomic theory was a scientific theory on the nature of matter put forward by the English…

Q: Calculate the mass of CBr4 a) 320 g b) 332 g c) 92 g d) none of these

A: Mass of C = 12g/mol  Mass of Br = 80g/mol

Q: oxygen atoms

A:

Q: How many atoms does hydrogen have

A: Calculate no. of  atom in hydrogen=?

Q: What are the atomic models, explain the most modern one

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Q: How many moles of aluminum do 3.7x10^24 aluminum atoms represent?

A: The number of units (maybe atoms, electrons, or ions) present in 1 mole of any substance is…

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: Explain how Dalton’s atomic theory offered a convincing explanation of the observation that mass is…

A: The parameter by which Dalton's atomic theory provided appropriate explanation of observation that…

Q: How many moles of aluminum are required to c

A:

Q: Further experimentation shows the anhydrate has the following composition: 20.19% magnesium, 26.64%…

A: The chemical formula of a compound in which its constituent elements are present in the simplest…

Q: Consider two compounds. Compound A contains 2.77 g of phosphorus and 9.53 g of chlorine. Compound B…

A: Given,Mass of Phosphorus in compound B =11.9gMass of chlorine in compound B =40.9g

Q: How many Chlorine atoms are there in phosgene?

A: Phosgene is a colorless gas having molar mass equals to 98.92 g/mol. It is a suffocating gas.

Q: Calculate the relative formula mass of calcium oxide, CaO

A: The relative formula mass is also known as the molar mass. The relative formula mass is the sum of…

Q: 22. As in question 21 determine the mass % of N (nitrogen atoms) in ammonia (NH3), urea (CHẠN2O) and…

A: Mass percent is the mass of the element divided by the mass of the compound or solute.

Q: A 11.65 g sample of NaBr contains 22.34% Na by mass. Considering the law of constant composition…

A: Law of constant composition:It is also known as law of definite proportions.  It states that a…

Q: use models to study atoms?

A: Atom is defined as the basic building block of matter. All matters in any form either solid ,liquid…

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: places explain/ give example. The law of multiple proportions ATOMIC STRUCTURE AND SYMBOLS…

A: The fundamental quantity of compound is element. A compound is made of many such elements that…

Q: Q2. A compound of copper and sulfur contains 111.99 g of metal and 113.04 g of nonmetal. How many of…

A: • Here is given that, a compound contains copper and sulfur atoms . • And we know that, copper is a…

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

A:

Q: Calculate the mass in grams of one mole of each of the following (the mass of a single item is given…

A: Number of particles in 1 mole = 6.023 × 1023 Mass of 1 electron = 9.10938 × 10-28 gm Mass of 1 mole…

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

A:

Q: For your research project, you need to use isotopic labels. For this you buy chlorine gas (Cl2) that…

A: The basic constituent of a substance is known as an atom that has a nucleus consisting of protons…

Q: In your own words, explain Why do scientists use models to study atoms? In your own words, explain…

A: Atoms are the smallest part to which elements are divided. Or we can say defining structure of…

Q: Calculate the number of atoms in sample. 0.082 g Sr

A: given sample is 0.082 g of Sr we know 1 mol has 6.022 × 1023 atoms

Q: Of the remaining two subatomic particles, which do you place second in importance for forming…

A: This question concerns the work done by J.J Thomson. Thomson thought that the electrons are the most…

Q: which contains more atoms, 1 gram on gold or 1 gram of silver? explain please

A: 1mol of any substance contains 6.023 × 1023  number of atoms. 1mol of any substance means its atomic…

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.