45.8 gg N2N2 Express your answer using three significant figures.   How many molecules are in each sample?

Q: 3.A sample of 7.2 moles of the ionic compound, potassium dichromate, K2Cr2O7, is present. How many…

A: The formula of the given compound is K2Cr2O7. One mole of potassium dichromate contains the number…

Q: How many grams are in 4.35 x 1021 molecules of water (H2O). Show work!

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Q: How many formula units are in 0.032 moles of Fe2O3? A sample of 7.30x10^24 atoms of silver weighs…

A: We need to calculate  formula units in 0.032 moles of Fe2O3 mass of 7.30x1024 atoms of silver…

Q: A model of the butanal molecule is shown in the window below. ball & stick + labels ited a. How many…

A: From the model, Butanal=> CH3>CH2CH2CHOMolecular formula of butanal is C4H8O. Mole is the SI…

Q: 2Al(s) + 3I2(s) > 2AlI3 How many moles of I2 will be required to make 23.5 moles of AlI3? *Use…

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Q: Write out the conversion factors between the moles of each element and the moles of the compound…

A: One molecule of the compound C5H12 contains 5 atoms of Carbon, 12 atoms of Hydrogen. The…

Q: How many molecules of oxygen are in 150 g of oxygen? 05.6 x 1024 O28х 1024 О5.6 x 1022 O1.4 x 1024…

A: Given: Mass of Oxygen= 150g To Calculate: Molecules of  Oxygen

Q: Why is sugar water not a good conductor of current?

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Q: Please don't provide handwritten solution ....

A: The number of molecules present in a given substance can be related to its number of moles using the…

Q: A vial contains 4.17 x 1023 molecules of an unknown organic compound. How many moles (3 sf) of this…

A: Given: Organic compound contains 4.17×1023 molecules.

Q: Select the set-up for the mass % of fluorine, F, in PF3. O (27/42) x 100 O (9/42) x 100 O (19/50) x…

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Q: Why do metals tend to transfer or loose electrons? a. Metals have low electronegativity and…

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Q: A sample of a compound with the molecular formula C20H24N2O2 contains 2.75 x 1024 nitrogen atoms.…

A: Molar mass of any substance is the mass of one mole of the substance, which is expressed as g/mol.…

Q: How many moles are contained in each number of grams of table sugar (C12H22O11, molar mass 342.30…

A: The objective of this question is to calculate the number of moles in a given mass of table sugar…

Q: Calculate the empirical formula of each substance from their spectrograms. 2) naproxen ( The drug:…

A: Given : Naproxen molecule which contains only H, C and O. Mass percent of C = 73.03 % Mass percent…

Q: A sample of Water, H2O, has a mass of 55 grams. Determine the number of moles in the sample.

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Q: How many C atoms are in 1.3 x 10² mol of sucrose? Be sure your answer has the correct number of…

A: 1 mole = 6.022 x 1023 entities1 mole of compound AB contain 1 mole A and 1 mole of B 1 mole of…

Q: 1. 84 g of CsH&O6 contains 6.02 x 1023 molecules.

A: Molar mass of C5H8O6 = 5×12 + 8×1+ 6 × 16 = 164 g 1 mol of any substance contains= 6.022×1023…

Q: PROVIDE THE CORRECT SHORT ANSWER IN THE BOX FOR THE DESCRIPTION BELOW - How many atoms or molecules…

A: The question is asking for the number of atoms or molecules in one mole of a substance. This is a…

Q: N2(g) + 3H2(g) —> 2NH3(g) What mass in grams of Ammonia (NH3) is produced from 25 moles of Hydrogen…

A: Given reaction is  N2(g) + 3H2(g) -------> 2NH3(g) Moles of hydrogen = 25 moles Molar mass of…

Q: How many C atoms are present in a 7.57 ng sample of nitrobenzene, C6H5NO₂? Note: 1 ng is one…

A: Given mass of nitrobenzene = 7.57 ngRequired no. Of C-atoms in 7.57ng of nitrobenzene = ? As 1ng =…

Q: which of the samples have the large numbers of molecules H2S04 ? (Atomic mass H = 1, O=16 S= 32) * O…

A: Given data, Atomic mass of H = 1g/mol Atomic mass of O = 16 g/mol Atomic mass of S = 32 g/mol

Q: How many moles of Cu(NO3)2 are in 3.4 x 1022 molecules? Please have your answer in decimal format…

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Q: d your answer to 1 decimal p g-mol -1

A: Molar mass of a compound is defined as the mass of 1 mole of that substance and number of grams per…

Q: Please assist with number 3

A: We are authorized to answer three subparts at a time since you have not mentioned which part you are…

Q: H₂C HU H C CH- CH 0 The compound's molecular formula (eg c13h1201, write 1 if 1 is the subscript) is…

A: The molecular formula of a compound shows the atomic symbols of all the constituting atoms present…

Q: mass

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Q: How many grams of Al2(CrO4)3 (HINT: F.M. = 401.96) would be required to obtain 12.00 g of…

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Q: Convert 1.59 x 1022 molecules/formula units of X5Z4 into grams of the same compound. (Assume that…

A: The given data contains, mass of X5Z4=1.59×1022molecules/formula molar mass =(5×54.94 g/mol)+(4×8.72…

Q: 2.00 mol of CO2  A) 6.022 x 10^22 molecules B)44.01 g C)3 atoms total

A: The molecule given is CO2 with moles of CO2 = 2 Since 1 molecule of CO2 has  1) 1 atom of C  2) 2…

Q: 5. What is the molecular formula for a compound if the empirical formula is CH₂O and the molecular…

A: Please note- As per our company guidelines we are supposed to answer only one question. Kindly…

Q: Convert 2,58 x 10 22 grams of X4Z2 into molecules/formula units of the same compound. (Assume that…

A: Answer :- Here I have explained the complete solution . Hope this will really help !!!!!!!!!!!!   So…

Q: An unknown compound comprised of osmium and chlorine is 40.11% osmium by mass. a. If you assume…

A: Hello. Since the question contains more than three sub-parts, the first three sub-parts shall be…

Q: The number of moles  of 3.06 X 10–3 g of C2H5NO2 is 0.0408 moles.

A: In international system of units, Mole is considered as a unit which helps to calculate the amount…

Q: What is the mass percent of silicon dioxide (SiO2) if you are able to separate 2.202g out of a…

A: The mass percentage of a compound in a mixture is equal to the ratio of the mass of that compound…

Q: Aluminium has a density of 2.70 | g/cm3 . How many moles of aluminum are in a 13.2 cm3 block of the…

A: Density :- Density of a substance is its amountof mass per unit volume . So , density is the…

Q: Convert 5.26×1021 platinum atoms to moles. Express your answer in moles to three significant…

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Q: What is the mass percentage of carbon in C7H11O3? Express your answer as a percentage (i.e., out of…

A: Mass percentage of element in compound is defined as percent ratio of element mass to the whole…

Q: 37 x 1019 molecules CH3NH2 contains how many moles of carbon?  CH3NH2 (g) +   O2 (g) →   CO2 (g) +…

A: Since given molecular formula of compound is CH3NH2 which shows that it has one caron atom or one…

Q: How many moles (of molecules or formula units) are in each sample? 0.2011 g C8H18 Express your…

A: Given, mass of C8H18 = 0.2011 g Molar mass of C8H18 = 114.23 g/mol

Q: How many moles (of molecules or formula units) are in each sample? 42.59 g CF2Cl2 Express your…

A: One mole contains Avagadro number of atoms. That is, 6.022x1023 atoms. Mass of one mole is called…

Q: N2(g) + 3H2(g) —> 2NH3(g) What mass in grams of Ammonia (NH3) is produced from 10 moles of nitrogen…

A: Given No. of moles of N2 = 10 moles Molecular weight of NH3 = 17 g mol-1   Formula Used mass of…

Q: Calculate the mass in grams 3 sig figs of 3.10x1023 moles of water

A: Here, we have to find the mass of 3.10x1023 moles of water.

Q: A Freon leak in the air conditioning system of an older car releases 30 g of CF2Cl2 per month. Part…

A: To calculate the mass of chlorine(Cl) emitted into the atmosphere each year by the car due to a…

Q: What is the mass in grams of 3.60 mol of lactic acid (C3H6O3), the compound responsible for the…

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Q: Which of these are correct/ true?  A. 1 mole of He has the same amount of atoms than 1 mole of Ca B.…

A: There are some correct statements where are written with explanatios.

Q: Oxygen makes up 46.7% by mass of the earth's crust. How any grams of oxygen are present if a sample…

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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.