Phillip the freshman chemistry student was stirring his salt during heating. If some of the hydrated salt adhered to the stirring rod and was removed prior to weighing the anhydrous sample, would his calculated number of water molecules be higher or lower than it should be?

Q: The molar mass of a compound was determined to be 23.99 g/mol. If the sample contains 3.2 mol, then…

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Q: How many molecules of water are in 6.0 g of ice ,H2O(s).

A: A molecule is described as two or more atoms of the same or different element that are linked…

Q: A balanced chemical equation contains the term "2Ba(OH)2 8H2O." How many atoms of each element does…

A: Given: The coefficient of Ba(OH)2·8H2O in the reaction = 2

Q: The anticaking agent added to table salt is calcium metasilicate (CaSiO3). This compound can absorb…

A: The total molar mass of CaSiO3 is 116.2 g/mol.

Q: How many molecules are in one drop of water if 1.00 g of water contains 3.34 × 10 ²² molecules?…

A: 1 gm is equal to 1 mL. Given 1mL=20 drops.

Q: The density of water is 1.00 g/mL at 4 degrees Celsius. How many water molecules are present in…

A: First of all calculate the mass of water by using given volume and density of water. Then calculate…

Q: How many molecules of C8 H18 would you have if you have 2.51 mol? Report your answer with 3…

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Q: How would the following errors affect the empirical formula for the compound? That is, will these…

A: In the given experiment the student ran out of time and didn't heat mixture second time.

Q: Calculate the number of atoms in 12.45 grams of iron. 1.342 x 1023atoms 1.342 x 1022toms 0.223 atoms…

A: Given information, Given mass of iron = 12.45 g Molar mass of iron = 55.845 g/mol Calculate : Number…

Q: A beaker contains 48.948.9 mL of carbon tetrachloride (CCl4CCl4, density is 1.591.59 g/mL).…

A: Volume of carbon tetrachloride = 48.9 mL  Density = 1.59 g/mL  Density = mass ÷ volume

Q: Tartaric Acid (C4H6O6) is naturally found in fruits like grapes and bananas. It is used in the food…

A: Please find your solution below :

Q: How many molecules are in 4.83×1020 H2O2?   I don't quite understand how to do these calculations. I…

A: Note: Hey there! Thank you for posting the question. Since the unit is not given, we have taken…

Q: How many molecules are in 52.35 grams of aspartame? C14H 18 ,05 2.89 X 1022 Atoms C subscript 14 H…

A: Option( B) is correct.

Q: 35 Consider the following balanced chemical reaction: (27.74 g C3H6O) + (61.12 g 0₂) --- >(x g CO₂)…

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Q: Carbon tetrachloride, CCI4, was widely used as a refrigerant and in fire extinguishers until it was…

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Q: Which compound below is a molecular compound (or molecular substance)? NH3 KBr AGNO3 CaCl2

A: Molecular compounds are made when two or more element share electron in a covalent bond to connect…

Q: 1. How many molecules of oxygen are in 50.0 g of oxygen?

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Q: A 15-g sample of lithium is reacted with 15 g of fluorine to form lithium fluoride: 2Li + F2 →…

A: First convert mass into mole by diving molar mass respectively Then Calculate limiting reagent by…

Q: How many molecules are in 13.7 moles of water? All answers have units of molecules of water 8.25 х…

A: We need to find molecules of water in 13.7 moles water.

Q: A 21.8 g sample of water contains how many water molecules? O 8.23 x 1023 molecules O 7.29 x 1023…

A: Here we have to calculate number of molecules of 21.8 gram of water sample-

Q: You discover a new compound, somewhat related to the garnet types of silicate compounds. What is the…

A: The mass of one molecule of a substance is known as molecular mass. The molecular mass of the sum of…

Q: What are the masses of the four different BrCl molecules? Express the masses in atomic mass units…

A: Isotopes - Isotopes are two or more atoms having the same atomic number but different mass numbers.…

Q: If atoms of magenesium (Mg) and atoms of 10 chlorine (Cl) could bump into each other, could they…

A: Whether they combine to form any substance has to be determined The number of molecules would be…

Q: 1. What do you call to the unit amount of a substance used for measuring large quantities of very…

A: Given:  unit amount of  substance used for measuring large quantities of very small entities such as…

Q: How many molecules of water are made from 8 molecules of H2? molecules

A: Balanced equation for the formation of water from hydrogen and oxygen is as follows. 2H2+O2→2H2O…

Q: Don't get how to fill in the table attached below.

A: The number of water molecules present inside a crystal is known as water of crystallization.The…

Q: Convert 9.83 x 1022 grams of X4Z4 into molecules/formula units of the same compound. (Assume that…

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Q: High fructose corn syrup (HFCS) is a sweetener that was designed in the 1970s, which takes corn…

A: Given, Amount of HFCS used = 67.5 g Percentage of fructose molecules =55.1 % Percentage of glucose…

Q: Calculate the mass of each sample, express your answer with the appropriate units. 14.7 mol HNO2…

A: 1 mole = 6.022×1023 [Avogadro's number] The mass of one mole of molecules of a substance is known as…

Q: The molecular formula of aspirin is C9H8O4. How many aspirin molecules are present in one…

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Q: How many chlorine atoms are in 12.2 g of CCl4?(a) 4.77 * 1022(b) 7.34 * 1024(c) 1.91 * 1023(d) 2.07…

A: Consider the 12.2 g of CCI4 Calculate the molar mass of CCI4 as follows: Molar mass = Atomic mass of…

Q: Classify the types of matter below: Name Formula Picture  Atom (Y/ N) Molecule (Y/ N)…

A: An atom is mainly composed of three sub-particles; electrons, protons and neutrons. These particles…

Q: tablet of Mylanta antacid contains 0.300 g Mg(OH)2 and 0.200 g Al(OH)3. For the blanks in this…

A: Mass of Mg(OH)2 = 0.300 g  Mass of Al(OH)3 = 0.200 g

Q: A local water retention pond was found to have elevated levels of mercury concentrated as 14 ng per…

A: Given : Concentration of mercury i.e Hg = 14 ng/L. And volume of water in bond = 1250 m3  Since 1 ng…

Q: The density of 1.00g/ml  is at 4 degrees . How many water molecules are present in 2.56 ml of water

A: Mass of Water can be calculated as,

Q: Ascorbic acid (C₆H₈O₆) is also known as Vitamin C. What quantity in molecules of C₆H₈O₆ does a…

A: To find molecules of vitamin C, first convert mass in grams then divide it by molar mass to get its…

Q: 1.75 x 1023 atoms Pb converted to grams

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Q: Suppose you are performing an experiment in which you produce a solid and measure its mass. You run…

A: Solution:- Given Data => Trial number Mass of product 1 2.59 g 2 2.26 g 3 1.91 g 4…

Q: Part C Now that we have put coefficients of 3 in front of CaSO4 and CaCl2, what coefficient should…

A: Given, 3 CaSO4  +  AlCl3                       3 CaCl2  +  Al2(SO4)3     Required,…

Q: 1. Vitamin C has the formula C,H¸Og. Calculate the number of vitamin C molecules present in a 0.250…

A: The molecular formula of the vitamin C is = C6H8O6 The mass of vitamin C is = 0.250 g The number of…

Q: Chlorophyll molecules are responsible for the green pigmentation of plants. Differing chemically…

A: Solution - According to the question - Given - Mass of 5 oxygen = 16 * 5 = 80 Mass of chlorophyll X…

Q: Moles of  water in copper (II) sulfate n hydrate? Mass of copper (II) sulfate n hydrate= 4.738g…

A: Hydrated salt is salt which is  having water in their crystals and anhydrated  salt is salt  where…

Q: a 0.755g sample of hydrated copper sulfate of hydrated copper sulfate CuSO4.XH2O was heated…

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Q: What is the mass (in grams) of 3.2 x 1021 molecules of ibuprofen (C13H1802; molar mass 206.3 g/mol)?…

A: Given: The molar mass of ibuprofen = 206.3 g/mol We have to calculate the mass of 3.2×1021 molecules…

Q: Percent Composition 1. Calculate % mass of water in: CUSO4•5H20 Mass of Water = Cuso %3D Mass of…

A: Given: A compound CuSO4 x 5H2O Atomic masses of the elements are, H = 1 O = 16 S = 32 Cu = 64

Q: Vitamin C has a formula of C6H8O6, calculate the number of vitamin molecules present in a 0.250g of…

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Q: An anhydrous (water removed) salt has a formula mass of 159.265 g/mol. If the hydrated version of…

A: Given, The molar mass of water (H2O) = 18 g/mol. The mass of 5 moles of water (H2O) = 5 x 18 g = 90…

Q: 4. A sample of acetic acid has 4.22x1024 molecules. How many grams of hydrogen are present?

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Q: Which of the following contains the largest number of atoms? Select one: a. 1.0 mol of water (H2O)…

A: The numbers of atoms present in any substance can be calculated by help of Avogadro's Number. One…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.