A compound contains only carbon and hydrogen and has aformula mass of 28.06 amu. What is its molecular formula?

Q: Vhich molecular formula is also an empirical formula? O H202 O C6H1206 C2H4 PCI3

A: It’s explained below:

Q: A salt crystal has a mass of 0.20 mg, How many NaCl formula units does it contain?

A: Given:Mass of NaCl = 0.20 mg = 2.0x10-4 g.Molar mass of NaCl = 58.44 g/mol.

Q: A compound contains 18.7% lithium, 16.3% carbon, and 65.0% oxygen by mass. If its molecular formula…

A: Given data, %Li = 18.7% %C=16.3 % %O=65.0%  molar mass of compound= 73.8 g mol-1 Then, molecular…

Q: How many formula units of MgBr, are in 18.91 g?

A:

Q: Heart disease is linked to high blood cholesterollevels. What is the percent composition of…

A: Percentage composition of each element defines the amount of that particular element present with…

Q: How many MOLECULES of dioxygen difluoride are present in 4.66 moles of this compound ?

A: given, moles of dioxygen difluoride = 4.66 moles

Q: If the molar mass of the compound is 78g/mol and the empirical formula is CH, find the molecular…

A: An empirical formula is defined as the simplest or most reduced whole number ratio of atoms present…

Q: What is the empirical formula for perfluoropropane if the compound contains 81% fluorine and 19%…

A: Empirical formula of a chemical compound is that chemical formula which represents the simplest…

Q: Which of the following has more atoms: 0.302 g ofhydrogen atoms or 14.7 g of chromium atoms?

A: If the number of moles of a substance are more, the number of atoms are also more. Number of moles…

Q: A compound contains only nitrogen and oxygen and has aformula mass of 44.02 amu. What is its…

A: The atomic mass of Nitrogen, N = 14.01 amu The atomic mass of Oxygen, O = 16 amu The atomic mass of…

Q: formula mass MgBr2.

A:

Q: 3. How many formula units (particles) of NaCl are in 4.46 moles of this compound?

A: SOLUTION  Moles of NaCl = 4.46 mol 1 mol NaCl has 6.02×1023 formula units of NaCl So ,  4.46 mol…

Q: Consider the compound zinc acetate ZnC2H3O2 1. How many total atoms are in this compound?  2.…

A: Zn[C2H3O2]2 has 1 Zn atom, 4 carbon atoms, 6 hydrogen atoms and 4 oxygen atoms.Total atoms in this…

Q: Calculate the mass of diphosphorus pentoxide (P2O5) that contains a million (1.0x1023) oxygen atoms.…

A:

Q: ne empirical formula of each

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: What is the no. Of atoms present in 46 g of Na?

A:

Q: 1. How many molecules of aspirin C,H804 if there are 0.360 g of it?

A: Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: How many formula units of H3PO4 are in 0.45 moles of H3PO4?

A: We have to multiply the number of moles by Avogadro's number.

Q: Selenium, an element used in the manufacture of solar energy devices, forms an oxide that contains…

A: Assume 100 g sample :    37.8 g O X 1 mol O/16.00 g O     =2.363 mol O     Selenium molecular mass…

Q: What is the formula mass of H2SO4?

A: The formula mass of H2SO4 is to be calculated.

Q: what is the empirical formula of a comcompound that contains only iron and oxygen and is 22.27%…

A: Empirical formula :- The formula which gives the simplest wholenumber ratio of atoms of various…

Q: One bottle of pain reliever ibuprofen (C13H1802) contains 500. tablets and one tablet contains 0.200…

A: Avogadro's Number : Avogadro’s number has been defined as the number of molecules in one mole of any…

Q: 1 Compound X has a molar mass of 416.41 g-moland the following composition: element mass %…

A:

Q: How many MOLES of dioxygen difluoride are present in 4.95×1022 molecules of this compound ?

A: We have to calculate the moles of dioxygen difluoride .

Q: What is the percent composition of caffeine (C8H10N4O2)?

A: Given :- chemical formula of caffeine = C8H10N4O2  To calculate :- percent composition of each…

Q: Consider the following compound: Sr3(PO4)2 *4H2O   -Calculate the theoretical percent strontium by…

A: The mass percent of strontium in Sr3(PO4)2 * 4H2O is calculated as,

Q: how many moles of hydrogen are in 3.06*10^-3 grams of glycine

A: Given: 3.06*10^-3 grams of glycine.

Q: How many molecules are contained in a pentanal (C5H10O) sample with a mass of 5.27 g?

A: 1 mole of any substance contains Avagadro number (6.023 *1023) of species. therefore, 1 mole of…

Q: For each of the following drugs, determine the mass of compound present for the given moles of each…

A:

Q: a. How many molecules of carbon tetrachloride are present in 3.37 moles of this compound? molecules

A: This problem can be solved by knowing the number of molecules presentin one mole.…

Q: A compound that contains only copper and chlorine contains 2.363 g copper and 2.637 g chlorine. What…

A:

Q: Explain this

A: 1 mole of any substance contains Avogardo number (6.022 x 1023) of particles.The particles may be…

Q: Enter your answer in the provided box. The formula for rust can be represented by Fe,O3. How many…

A: Given;

Q: has a molar mass of 99.0 g/mol. Analysis of a sample shows that it contains 24.3% c and rest is…

A:

Q: what is the formula mass of calcium nirate? ( round to a whole number)

A: To Write the formula of a chemical compound. first write the Symbol of cation and then write the…

Q: How many MOLECULES of dioxygen difluoride are present in 9.22 grams of this compound ?

A: We know, 1 mole of a compound contains 1 Avogadro number of molecules, where 1 avogadro number =…

Q: analysis shows the compound is composed only of 88.81% C and 11.19% H by mass. What is the molecular…

A:

Q: What is the formula mass for a compound? Why is it useful?

A: The formula mass is defined as the summation of the average atomic masses of each atom that is…

Q: Number of atoms of Carbon in 19 moles of C4H10 are:

A: Recall the data, moles of C4H10=19 moles  no. of carbon atom ?

Q: When added to toothpaste, stannous fluoride, SnF2, has proven to be helpful in the prevention of…

A:

Q: What mass of CCl4 contains 7.0x1026 molecules of CCl4

A:

Q: Regular treatment with low dose aspirin is used to help prevent cardiovascular disease. How many…

A: The molecular formula of aspirin is C₉H₈O₄. The number of molecules present in 240 mg of aspirin has…

Q: A compound containing carbon and hydrogen has a molar mass of 56.11 g/mol and an emperical formula…

A:

Q: A mothball, composed of naphthalene (C10 H8 ), has a mass of 1.50 g. Part A How many naphthalene…

A: 1 mole of any atom or molecule contains Avogadro's number of atoms or molecules. Avogadro's number =…

Q: A compound contains carbon and hydrogen and its molecular mass is 84 amu. The compound contains…

A: The given data is as follows: The molecular mass of the compound = 84 amu The percent of carbon =…

Q: Anabolic steroids are performance enhancement drugs whose use has been banned from most major…

A: Calculate the molar mass of fluoxymesterone (C20H29FO3),      20(12.01) + 29(1.01) + 1 (19.00) + 3…

Q: Be sure to answer all parts. Caleulate the molecular mass or formula mass (in amu) of each of the…

A: Molecular mass - The sum of the atomic masses of all atoms in a molecule.

Q: How is the molecular mass of a compound the same as themolar mass, and how is it different?

A: The molecular mass indicates the mass of one molecule and it is obtained by adding the masses in amu…

Q: e the molar mass of each compound. Show yo

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.