The molecular mass of a compound containing 75.0 % carbon, 10.5 % hydrogen, and 14.6 % nitrogen is 384.6. Determine the molecular formula of this compound.

Q: Strontium phosphate, Sr3(PO4)2, is a crystalline substance used in medicine and industry. How many…

A: Given that, Sr3(PO4)2

Q: Does the percent by mass of each element in a compound depend on the amount of that element used to…

A: The mass percent is calculated by the formula, % mass of element=mass of element in compoundmass of…

Q: The ratio of each element's mass in a compound changes when the size of the sample changes.

A: In this question we have to tell that above statement is true or false with explanation.

Q: 48. How many molecules of caffeine, C4HSN2O, are there in 18 g of caffeine? a. 1.12 ×10E23 b. 1.05…

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Q: How many grams of silicon are present in 2.78 moles of silicon dioxide?

A: Recall the data, moles of SiO2=2.78 moles mass of Si=?

Q: a. How many moles of sulfur hexafluoride, SF6, are present in 1.87 grams of this compound? moles b.…

A: • Thus, 0.0128 moles of sulfur hexafluoride are present in 1.87 grams of this compound in correct…

Q: How many GRAMS of sulfur hexafluoride are present in 9.83×1022 molecules of this compound ?

A: Given : Compound is sulfur hexafluoride i.e SF6. And number of molecules of SF6 = 9.83 X 1022…

Q: The cullinan diamond was the largest natural diamond ever found (january 25 , 1905 25, 1905). It…

A: Use formulas Mole=mass÷molar mass Total atoms=mole×6×1023 MOLAR mass of diamond= 12g/mol

Q: Determine the molecular and empirical formulas of the following: (a) The organic solvent benzene,…

A: Molecular formula and empirical formula will be written using the number the atoms of each type in…

Q: The organophosphate nerve agent A-234 is believed to have the formula C5H8F2NO3P. It is one of the…

A: Molecular formula: C5H8F2NO3P Isotope of organophosphate nerve agent with molecular formula…

Q: Which sample contains the greatest number of atoms? 54.7 g V 51.2 g Mn 203 g Bi

A: To find number of atom we have to calculate number of moles first. Moles= given mass/molar mass…

Q: Which one of the following statements about the compound C3H4 is CORRECT? Oa. Five molecules of C3H4…

A:

Q: 1.aDo a mole of Na and a mole of NaCl contain the same number of Na atoms ? Explain your answer .…

A: Same moles of any particle will have same number of that particles .

Q: 1. When 28.0grams of CO is analyzed, it is found to contain 12.0g of carbon and 16.0g of oxygen. How…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: Which of these statements is FALSE about the mole? O a. 1 mole is equal to 6.022 x 10 23…

A: Since you gave posted multiple questions, we are entitled to answer the first only.

Q: Diamond is one form of an elemental carbon. An engagement ring contains a diamond weighing 1.25…

A: Given, Diamond is one form of an elemental carbon and an engagementring contains a diamond weighing…

Q: A compound composed of 93.7% carbon and 6.3% hydrogen, by mass, has a molecular mass of 128 amu.…

A: The percentage composition of each element is given in the question. Calculate the empirical formula…

Q: How many grams of Ar are there in 4.28 moles of Ar? How many grams of Xe are there in a sample of…

A: (1) Atomic mass of argon gas is = 39.948 u While given moles of argon = 4.28 moles Then, by…

Q: How many carbon atoms are contained within 10.0 pounds of sugar, (sucrose) which has the formula…

A:

Q: How many moles of sulfur dichoride are present in 3.82 grams of this compound?  how many grams of…

A: given 3.82 grams of sulfur dichorideMolar mass= 102.97 g/mol102.97 gm of sulfur dichoride= 1 mole of…

Q: Does the appearance of a substance change when the composition does not change during a physical…

A: Physical change:  During physical change, the composition of substance does not change.  Chemical…

Q: A sample of C3H8C3H8 has 4.48×1024 H4.48×1024 H atoms. How many carbon atoms does the sample…

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Q: Find the mass of 1 molecule of NO in gram. а. 4.98 х1023 b. 30 C. 4.98 x10-23 d. 15

A: According to mole concept, mass of Avogadro number (6.022 × 1023) of molecules is equal to the molar…

Q: What percentage of atoms in the molecule represented in the following formula are nonmetals?…

A: % of non-metal atoms = 100 x number of non-metal atoms/total number of atoms

Q: Which of the following is equal to exactly 1 mole of atoms?     6.00 grams of carbon     31.93…

A: According to the mole concept , a mole is a measurement unit of any Substance in which particular…

Q: How many moles of calcium atoms do you have if you have 5.60 × 10²¹ atoms of calcium. (The mass of…

A: The question is based on mole concept. We have to calculate moles of calcium.

Q: Estrogen (estriol) is a steroid that has the formula C18H2403. What is the mass of carbon in a 50.0…

A: Given:  Molecular formula of estrogen= C18H24O3  Mass of estrogen given= 50g

Q: 1. How many MOLECULES of sulfur dioxide are present in 6.52 grams of this compound? molecules. 2.…

A:

Q: How many carbon atoms are in a 1.21 carat diamond? 1 carat = 200 mg (exactly)

A: Given, mass of diamond = 1.21 carat  1 carat = 200 mg  we are asked to calculate that how many…

Q: Vitamin A has the molecular formula C20H300. How many carbon atoms are in 6.02 x 1023 molecules vit…

A: As molecular formula of vitamin A is C20H30O . Thus in one vitamin A molecule  has 20 carbon atoms .…

Q: A sample of Cs weighs 99.5 grams. Will a sample of S that contains the same number of atoms weigh…

A: 1 mole of any substance = 6.022 x 1023 atoms (Avogadro number)   No. of moles of a substance can…

Q: Arrange the following substances in order of increasing mass percent of carbon.a. caffeine.…

A: The given substances should be arranged in increasing mass percent of carbon. The molar mass of…

Q: What is the total mass of hydrogen in each of the molecules?(a) CH4(b) CHCl3(c) C12H10O6(d)…

A: Mass of an atom of hydrogen is 1 g/mol.

Q: A brass alloy contains 78.6% copper, Cu, by mass with the remainder of the alloy being zinc, Zn.…

A:

Q: Calculate the number of atoms in 2.34 grams of Ca

A: First, calculate moles of Ca: It is given by: Moles of Ca = Mass/molar mass of Ca = 2.34g/(40gmol-1)…

Q: Determine the molecular formula of the compound with a formula mass of 42.08 g/mol is found to be…

A: From the percentage of amount of Carbon and hydrogen we can determine ratio number of carbon and…

Q: Determine the number of atoms in 41.0 grams of sodium, Na. (The mass of one mole of sodium is 22.99…

A: Given: Mass of sodium 41.0 g            Mass of one mole of sodium is 22.99 g/mol First divide the…

Q: 1. How many MOLES of carbon monoxide are present in 2.76 grams of this compound ? moles. 2. How many…

A:

Q: You take three compounds, each consisting of two elements (X, Y, and/or Z), and decompose them to…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Calculate the mass % of all the atoms in the following molecule HgSO3

A: The molecular weight of HgSO3 = 200.6+32+3*16 = 200.6+32+48 = 280.6 gm/mol  In HgSO3 the no. of Hg,…

Q: number of atoms in a 3.37×1033.37×103 g sample of carbon

A: 3.37×1033.37×103 g sample of carbon = 358693.061 g sample of carbon = 3.58 x 105 g sample of carbon

Q: Determine the number of each type of atom in each formula.a. Mg3(PO4)2 b. BaCl2 c. Fe(NO2)2 d.…

A: SOLUTION: Step 1: Hello. Since the question has multiple sub-parts, the first three subparts are…

Q: Hydrogen peroxide (H2O2) is a mild antiseptic used to prevent infection in minor cuts and scrapes.…

A:

Q: Chemical formulas can be written as empirical formulas, molecular formulas, or structural formulas.…

A: Given: An Empirical formula gives the simplest, whole-number ratio of atoms in a compound. A…

Q: How many moles of aluminum do 5.80×1024 aluminum atoms represent? Express your answer using three…

A: Number of Aluminum atom = 5.80 × 1024

Q: Calculate the mass of dinitrogen tetroxide N2O4 that contains a million ×1.000106 oxygen atoms.

A:

Q: A scientist is trying to discover information about an unknown metal in a compound. The formula for…

A: For the given compound, XBr3 Mass of sample = 4.712 g Suppose the mass of 1 mole of X be 'm' grams…

Q: How many atoms are in 75.8 grams of Fe?

A:

Q: Determine the number of atoms of O in 76.2 moles of Na₂Cr₂O₇.

A:

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.