An unknown compound has the following chemical formula: C_2F_x where x stands for a whole number. Measurements also show that a certain sample of the unknown compound contains 2.6 mol of fluorine and 1.29 mol of carbon. Write the complete chemical formula for the unknown compound. Note: underscore represents the subscript.

Q: It is often possible to change a hydrate into an anhydrous compound by heating it to drive off the…

A: Given: Mass of Ca(NO3)2 hydrate=45.21 g Remaining mass of anhydrous compound=31.41 g

Q: Determine the mass in grams of 5.48 × 10²¹ atoms of arsenic. (The mass of one mole of arsenic is…

A: Given:Mass of one mole of arsenic = 74.92 g1 mole of an element has 6.022×1023 (NA) atoms. ⇒1 mole…

Q: Empirical Formula of benzene (C6H6)- CH ascorbic acid (C6H8O6)- sucrose (C12H22O11)- C12H22O11…

A: the empirical formula-

Q: Al:CuCl2 ratio Mass of Al (g) Calculated mass of CuCl2 (g) 1:1 mass ratio 0.250   2:1 mass ratio…

A: Mass ratio:

Q: Elemental analysis of a compound with molar mass 214.22 g/mol gives the following mass percent…

A: Given data,Percent of C=72.89%Percent of H=4.71%Percent of O=22.41%Molar mass of…

Q: Determine the mass in grams of 7.52 x 10²1 atoms of barium. (The mass of one mole of barium is…

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

Q: Deternine the mass in grams of 3.98*10^21 atoms of zinc. (The mass of one mole of zince is 65.39 g.)

A:

Q: Determine the mass in grams of 2.31 × 10²¹ atoms of chromium. (The mass of one mole of chromium is…

A: The relation between mass and number of atoms:                                    Mass(g)molar…

Q: Fill in the blank. One mole of any atomic, ionic or molecular substance is it's respective atomic,…

A: The atomic mass of an element is equal to the mass of one mole of that element. The molecular mass…

Q: Determine the mass in grams of 3.98 × 10²¹ atoms of arsenic. (The mass of one mole of arsenic is…

A:

Q: Determine the mass in grams of 6.96 × 102¹ atoms of carbon. (The mass of one mole of carbon is 12.01…

A: Mole is defined as mass of substance divide by it's molar mass

Q: calculate the mass of fluorine contained in 56.5 g of copper(II) fluoride.

A: Percent by mass (%w/w) = (mass of F/mass of CuF2) × 100%

Q: The correct result (indicating the proper number of significant figures) of the following…

A: To determine the correct result with the appropriate number of significant figures, we need to…

Q: Unknown element, Element X, exists in nature as two isotopes: ^{351}351 X has a mass of 350.9196 u…

A: Average atomic mass=∑i=1n (mass of ith isotope)(%abundance of ith isotope)100 where 'i'…

Q: Be sure to answer all parts. Enter your answers in scientific notation. Calculate the number of…

A: The compound given is Ca3(PO4)2. Mass of Ca3(PO4)2 given = 9.75 g Molar mass of Ca3(PO4)2 = Atomic…

Q: Calculate the number of oxygen atoms in a 150.0 g sample of dinitrogen tetroxide (N,04). Be sure…

A:

Q: Determine the mass in grams of 7.75 x 1021 atoms of carbon. (The mass of one mole of carbon is 12.01…

A: Given,the mass of one mole of carbon = 12.01 gNumber of carbon atoms = 7.75×1021 atomsHere, we are…

Q: Determine the mass in grams of 6.03 × 10²¹ atoms of carbon. (The mass of one mole of carbon is 12.01…

A: The given mass of 1 mole of carbon atoms = 12.01 g So, the mass of 6.022×1023 atoms of carbon =…

Q: An unknown compound has the following chemical formula: P20, where x stands for a whole number.…

A: In this question we'll be calculating the number of oxygen atom in one molecule of p2ox  For solving…

Q: How many MOLECULES of carbon dioxide are present in 6.99 grams of this compound ?  molecules. and…

A: 1) Given: Mass of CO2 = 6.99 g.

Q: Determine the mass in grams of 3.92 × 10²¹ atoms of arsenic. (The mass of one mole of arsenic is…

A:

Q: An aluminum atom has a mass of 4.48 x10 -23 g and a small airplane has a mass of 5000. kg. Use this…

A:

Q: There are two isotopes of an unknown element, X-19 and X-21. The abundance of X-19 is 10.93%. Now…

A:

Q: Determine the mass in grams of 5.36 x 10^21 atoms of chromium. (the mass of one mole of chromium is…

A:

Q: Stainless steel is composed of iron, manganese, chromium, and nickel. If a 2.00 g sample was…

A:

Q: How many grams of oxygen (O) are present in a 6.41 g sample of potassium nitrate (KNO3)? Enter your…

A:

Q: An analytical chemist measures the amount of Elements E, and E₂ in four samples of an unknown…

A: Since the unknown substance, X contains elements E1 and E2, it can be either a compound of E1 and…

Q: U-238 is naturally the most abundant form of uranium; however, only U-235 can be used as fuel in a…

A:

Q: <p>Two substances have the same molecular and empirical formulas. Does this mean that they…

A: A molecular formula uses chemical symbols and subscripts to indicate the exact numbers of different…

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.