Calculate the number of O atoms in 0.402 g of CaSO4 ·2H2O.

Q: When this equation is balanced with the smallest set of whole numbers, what is the coefficient for…

A: A chemical equation is said to be balanced, if the number of atoms of each element or compound is…

Q: Calculate the molar mass of adrenaline (C9H13NO3), a hormone responsible for regulating heart rate…

A: Since molar mass of any compound is given by  Molar mass = sum of ( Atomic mass of atoms X number of…

Q: Violet has found a container of aluminum bromide that says it contains 3.67 moles of AlBr3. What is…

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Q: Suppose you have two balloons-one filled with hydrogen and the other with chlorine at the same…

A: Since the number of molecules of both atoms is same Hence moles =  number of molecules / Avogadro's…

Q: lable Below, what is the percent composition of A in the compound A2E? Round to the nearest 0.01 and…

A: Given-> Atomic mass of A = 9.68 g/mole Atomic mass of E = 42.59 g/mole

Q: Calculate the number of N atoms in 0.917 mg of NH4NO3. Answer in scientific notation.

A: GIVEN:Mass =   0.917 mgMolecular formula of the compound = NH4NO3Molecular mass  = 80.052 g/mol (…

Q: our future lab partner tells you the empirical formula for the molecular compound is C6H15O9. You…

A: Solution - According to the question - The empirical formula of a chemical compound is the simplest…

Q: How many atoms are in 86.5 g of potassium dihydrogen phosphate (KH,PO4)? number of atoms: 3.83 x1023…

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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: What is the total number of atoms in the following expression:  17Fe2 (CO3)3?

A: The farmula of the compound is 17Fe2 (CO3)3

Q: How many molecules are present in one mole of water, H2O? Express your answer in scientific…

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

Q: Calculate the number of N atoms in 0.549 mg of NH4NO2. Answer in scientific notation

A: We have to calculate the number of N atoms in 0.549 mg of NH4NO2.

Q: How many moles are in 2.45 x 10^23 molecules of Na2S?Answer In scientific notation.

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Q: What is the empirical formula for C10H2005 ?

A: Empirical formula of a compound = Formula of a compound written with the smallest integer subscript.…

Q: How many moles of iron are in (3.7x10^36) atoms of iron (Fe)? For Avogadro's number use:  6.022 x…

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Q: This is the chemical formula for methyl tert-butyl ether (the clean-fuel gasoline additive MTBE):…

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Q: 2.029 x 1024 atoms

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Q: How many molecules of ethane are in 3.2997 mol of ethane (C2H6)?  Enter your response rounded to 3…

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Q: Convert 1.23×1024 atoms of carbon to moles of carbon.

A: Avagadro number gives us the number of atoms or molecules present in one mole of a substance. It has…

Q: This is the chemical formula for acetic acid (the chemical that gives the sharp taste to vinegar):…

A: Given: Compound: CH3COOH Moles of Oxygen are 1.88 moles. To find: Moles of H in the sample

Q: TRUE OR FALSE. The value of Avogadro’s number is 6.02 x 1023 g/mol.

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Q: Using dimensional analysis, convert 5.7 moles of Fluorine into atoms. (1 mol = 6.02 x 1023). Round…

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Q: The chemical formula for zinc nitrate is: Zn(NO3), Calculate the molar mass of zinc nitrate.

A: The chemical formula given is Zn(NO3)2  Hence 1 molecule of Zn(NO3)2 has  1) 1 Zn atom 2) 2 N atoms…

Q: How many moles of oxygen atoms are in 5.0E-1 moles of CO? Only give the numeric value of your…

A: The molecular formula of carbon monoxide ( CO ) suggests that one molecule of carbon monoxide…

Q: How many moles are in 2.45 x 10^23 molecules of Na2S?

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Q: Use molar relationships to calculate: Determine the mass in grams results from 4.2x1019 atoms of…

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Q: 35. Determine the percent ammonia, NH3, in Co(NH3)6Cl3, to three significant figures.

A: Percentage by mass of any element in its compound is the amount of that element divided by the total…

Q: 2. How many grams of aspirin (C,H3O4) are present in 7.95 102 molecules of C,H;O4. The answer is

A: Molar mass of aspirin = 180.16 g/mol  It means 1 mol of aspirin has= 180.16 g  1 mol of any compound…

Q: attempts left Chec Enter your answer in the provided box. Calculate the number of grams of Al in 461…

A: Number of moles is calculated by dividing  given mass with molecular mass.

Q: Convert 1.41×1024 atoms of carbon to moles of carbon.

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Q: Which of the following has greater mass: 2 atoms of mercury or 3.41 × 10-23 mol of beryllium? 3.41 ×…

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Q: How many moles of sulfur atoms are there in a sample that consists of 1.79e+20 formula units of…

A: Use formulas Mole=mass÷molar mass Total molecule/formula unit=mole×6×1023 Mass= 28.64×10-3gm

Q: Consider the following equation: N2 + 3H2 –>2NH3 Calculate number of ammonia molecules produced from…

A: Mass of Hydrogen gas = 35.5 g  Molar mass of Hydrogen gas = 2.016 g/mol Moles of Hydrogen gas = mass…

Q: What is the mass in grams of 250 liters of oxygen gas, O2? Answer the equation in the format in the…

A: One mole of any gas contains 22.4 literof volume.

Q: Clik in the answer box to activate the palette. Determine the empirical formula of a compound…

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Q: This is the chemical formula for talc (the main ingredient in talcum powder): Mg3 (Si,O3),(OH), An…

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Q: Be sure to answer all parts. Potassium is the second most abundant metal in the human body.…

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Q: • Sodium metal reacts with hydrogen to form sodium hydride (NaH) 2Na + H2---- 2 NaH If 10 grams of…

A: Given reaction --- 2Na + H2 ----> 2NaH  mass of Na =10 g, mass of H2= 8 g  moles of NaH = ?…

Q: Determine the percentage by mass of each element in the following compounds. (Round your answers to…

A: Mass percent of an element:

Q: How many molecules of C8H18C8H18 would you have if you have 2.51 mol? Report your answer with 3…

A: The molecules of C18H18 when you have 2.51 mol, number of molecules is calculated as given below.

Q: how many sulfur atoms are in 11.12 g of S7O2? report in scientific notation and to the hundredths…

A: Given :- mass of S7O2 = 11.12 g  To calculate :- Total sulfur atoms present in the given amount

Q: How many moles are in 3.2 x 1024 of CO2 molecules? (round answer to the correct number of sig figs)

A: Given : Number of molecules of CO2 = 3.2 X 1024 molecules.

Q: How many moles of Al2(CO3)3 are there in 127 g of Al2(CO3)3 ? Round your answe to 2 decimals. Your…

A: The formula mass of a substance is the sum of the average atomic masses of each atom represented in…

Q: Calculate the moles of C2H6 in 3.76x1023 molecules of C2 H6. Express your answer using three…

A: Interpretation- To determine the number of moles of C2H6 in 3.76× 1023 molecules of C2H6 -…

Q: This is the chemical formula for epinephrine (the main ingredient in adrenaline): C,H1303N A…

A: We have to predict the moles of Hydrogen in the sample.

Q: The molecular formula of remdesivir is  C27H35N6O8P.  How many nitrogen atoms are in 6.4555 moles of…

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

Q: How many mol of C10H22 would you have if you have 90.13 grams? Answer to 2 decimal spaces.

A: Given : mass of C10H22 = 90.13 g  To calculate : number of moles of C10H22

Q: This is the chemical formula for talc (the main ingredient in talcum powder): Mg3 (Si,03),(OH), An…

A: Mg3Si4O12H2 Moles of Si ---> Moles of H 4 moles of Si = 2 moles of H Hence,for 90.4 moles of Si ,…

Q: Up late, a (tired) engineer calculated the molar mass of nitroglycerin (C3H5N3O9) to be 197.8 g/mol,…

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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.