6. Determine the Percentage composition of all the elements in: MgCr,O,

Q: 8.* A4.00 gram sample of a hydrate of nickel(II) bromide loses 0.793 grams of water when heated.…

A: The question is based on the concept of experimental chemistry. we have to calculate the empirical…

Q: Complete the table below for calculating the molar mass of the compound carbon tetrachloride. Molar…

A: The complete table for the molar mass of the compound carbon tetrachloride is given below, 1mole of…

Q: 17. How many moles are present in 0.0195 g of the amino acid glycine, CH2(NH2)CO;H? A. 2.6 x 10“ mol…

A: Weight of amino acid glycine = 0.0195 g Molecular Mass of amino acid glycine = 75.07 g/mol

Q: Copper(I) iodide (CuI) is often added to table salt as a dietary source of iodine. How many moles of…

A: The mixture containing 0.0100% CuI by mass indicates the 0.0100g of CuI is added to 99.9g of table…

Q: How many moles are represented by 3.65x10^34 molecules of water?

A: Given: molecules of water = 3.65×1034

Q: Ammonium nitrate is a common ingredient found in many fertilizers and is the main component that…

A: Introduction Ammonium nitrate has the chemical formula NH4NO3, and ammonium hydrogen phosphate has…

Q: Solid lithium hydroxide is used to remove exhaled carbon dioxide from space vehicles by forming…

A:

Q: Molarity is used to measure concentration in chemistry. What are the two units used that make up…

A: -> Molarity is number of moles present in one Litere of solution.                          (or)…

Q: QI) The combustion of an 8.23-mg sample of unknown substance gave 9.62 mg CO: and 3.94 mg H;O.…

A: Given: Mass of unknown substance = 8.23-mg   Mass of CO2 = 9.62 mg and H2O = 3.94 mg released on…

Q: What is the mass percentage of C in CH₃CH₂OH? Provide an answer to two decimal places.

A:

Q: Wine is approximately 12% ethanol (CH3CH2OH) by volume. Ethanol has a molar mass of 46.06 g/mol and…

A:

Q: Consider a compound where it is determined that 0.88 g are equivalent to 0.00256 moles.  What is the…

A: Data given: Mass of the compound, m = 0.88 g Number of moles of the compound, n = 0.00256 moles…

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.