What is the mass for the examples explain that

Q: what the word mean A number written after an element’s symbol in a chemical formula

A: When a molecule is formed by joining two or more atoms together, a chemical formula is shown to show…

Q: An alloy contains 78.7% zinc by mass. If a sample has a total mass of 230 grams, how many grams of…

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Q: What is the mass of 17 oxygen molecules to 3 significant figures?

A: 1mole  O2  molecules weight=32g6.023×1023  molecules of O2  weight =32gtherefore,  1molecules of  O2…

Q: 13. СО, # of molecules: # of elements: Name of element: # of atoms Total # of atoms: The #2 is a…

A: The name of the element and number of atoms in the given molecules has to be given.

Q: Question 24 How many grams F in 584.8 g Br2F?

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Q: 19) How many moles are in 29.127 g of Na?       Put answer in 5 significant figures.

A: 1 mole = 6.022×1023 (Avogadro's number)  The mass of one mole of atoms of any element is called as…

Q: The weight of an iron ball is 320 gram, if we calculate the mass of the same ball on the moon and…

A: Given the weight of the iron ball = 320 gram Weight and mass are two different things and have…

Q: If you change the number of __________ , the atom becomes a different element.

A: If we change the number of Protons, the atom becomes a different element.

Q: How many helium atoms in 535kg of helium

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

Q: A certain mass of carbon reacts with 455.9 g of oxygen to form carbon dioxide. ________ grams of…

A: According to Law of multiple proportions:     C  + O2 → CO2    ----Eqn 1     C  + 1/2O2 → CO…

Q: what happened to the mass of the substances as they burned?

A: The law of conservation of mass states that mass of the matter can neither be created nor be…

Q: PART B. Spectrophotometrilc Determination of the Copper Content of a Penny Mass of penny:3.138 Date…

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Q: Find the molar mass (M) for the following chemical species, to 2 decimal places. a) Strontium metal…

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Q: Find the mass of 1 atom of Chlorine in gram.

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Q: 7. K,CO, # of molecules: # of elements: Name of element: # of atoms Total # of atoms: The #3 is a…

A: Molecule is made of combination of several atoms of elements. In the given scenario, we have to look…

Q: Which represents the greatest number of atoms? Group of answer choices 15 g of Cu 15 g of Zr 15 g of…

A: no. of atoms in Cu = 15 X 6.023X1023/ 63.5 = 1.42 X 1023 no. of atoms in Zr = 15 X 6.023X1023/ 91.22…

Q: Determine the mass in the given amount of each substance. Show or explain your work. a. 0.00825…

A: Since you asked multiple questions so as per Q&A guidelines of portal I solved first three parts…

Q: Count total atoms. The number in front of the formula in parentheses is the coefficient:…

A: The total number of atoms present in the following compound has to be determined: 5 C20H25N3O2 The…

Q: 2.7 grams of nitrogen can make the maximun mass of how much ammonia

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Q: If a sample of carbon dioxide contains 16.4 g of oxygen, how many grams of carbon dioxide doesit…

A: Since, Moles is the ratio of mass to the molar mass of that atom or molecules. Thus,

Q: Calculate the mass in grams of 16.9 mol of carbon tetrachloride (CC14). Give your answer in…

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Q: What is the percent by weight (w/w%) of sugar in soda? Assume the average mass of sugar in soda is…

A: w/w % =( mass of solute(g)/mass of solution(g))*100

Q: How much will 5 moles of H2 gas weigh, in grams?

A: We are given 5 moles of H2 gas.

Q: For 2.277g of calcium chloride, the mass of calcium by itself is 0.825g. What is the mass of…

A: Given, mass of Calcium chloride (CaCl2) = 2.277 g mass of Calcium (Ca) = 0.825 g mass of chlorine…

Q: what is the mass element of calcium?

A: Mass of an element is represented by A in symbolic representation of element.

Q: In lab you need to measure out 0.82 mol of C6H12O6 for an experiment. How many grams should you…

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Q: Calculate the number of nitrogen atoms in a 140.0 g sample of dinitrogen tetroxide (N,04). Be sure…

A: We have to calculate the number of nitrogen atoms in a 140.0 g sample of dinitrogen tetraoxide…

Q: . What is the mass of 1.28 mol of iron?

A: Given : Moles of Iron = 1.28 mol.

Q: (c) Vitamin C contains carbon, hydrogen and oxygen only. It is 4.579% by mass of hydrogen. One…

A: The empirical formula is the chemical formula of any compound that represents the proportions of…

Q: a mass that is 1000 times greater than 1 gram

A: Mass: It is the measure that is used to determine the amount of any substance or material. It can be…

Q: i. C₁7H36 plus oxygen gas j. magnesium metal plus silver nitrate

A: C17H36 (Heptadecane) this is an alkane.  Alkane and O2 react and produce CO2 (carbon dioxide ) and…

Q: How many total atoms are there in 67.9 g of water (H,O)?

A: Given: Mass of water = 67.9 g Known: Molar mass of water = 18 g/mol

Q: Are the mass’ on the periodic table given in grams or AMU?

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

Q: How many elements are known at present?

A: Element is a pure substance and it cannot be broken down into simpler pure substance by chemical…

Q: What is the mass of 83.89 moles of X? (Assume that the molar mass of X is 27.78 grams per mole.)…

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Q: Calculate the mass of 3.83 moles of barium. Your answer should be rounded to significant figures and…

A: We know, The formula for the number of moles ---- Number of moles (n) = Mass of the substance(g)…

Q: If I mix 250. grams of carbon, with 400. grams of chlorine, how many grams of carbon tetrachloride…

A: Mass of Carbon = 250. gMass of chlorine(Cl2) = 400. gAtomic mass of C = 12 g/molMolar mass of Cl =…

Q: Most of the mass or weight of the atom is in

A: Correct Ans - Nucleus Most of the mass or weight of the atom is in the nucleus.

Q: How do I find the Mass (g) of water lost during heating? And find moles of water lost? Experiment…

A: The difference in the masses of beaker containing salt and beaker gives the value of mass of salt.

Q: 15. Cr(NH,),(NO,, # of molecules: # of elements: Name of element: # of atoms Total # of atoms: The…

A: Elements are the type of substances which cannot be broken down into smaller substances. Group of…

Q: Rank the following according to number of atoms (greatest to least):

A: To compare the number of atoms in each substance, we need to use the concept of moles. One mole of…

Q: A 3.20 mol sample of aluminum represents how many atoms?

A: Number of atoms = moles of Atom X Avogadro's number  where Avogadro's number = 6.022 X 1023

Q: How can mass and volume data for an unknown sample be used to identify the unknown?

A: Mass gives the quantitative aspect of the substance i.e., how much amount of the matter is contained…

Q: If 27.1 grams of bromine and 12.0 grams of chlorine combine to form bromine monochloride, how many…

A: Given :-  Bromine + chlorine ---> bromine monochloride  Mass of Br2 = 27.1 g  Mass of Cl2 = 12.0…

Q: What is the mass in grams of a single atom of W? Round answer to 4 significant figures

A:

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.