We appreciate your visit to How many moles of silicon dioxide are present in 2 55 grams of this compound How many grams of silicon dioxide are present in 1. This page offers clear insights and highlights the essential aspects of the topic. Our goal is to provide a helpful and engaging learning experience. Explore the content and find the answers you need!
Answer :
To determine the number of moles of silicon dioxide in 2.55 grams, we use the formula: moles = mass / molar mass. (option c).
To find the number of moles of silicon dioxide in 2.55 grams, divide the given mass (2.55 g) by the molar mass of silicon dioxide. The molar mass of silicon dioxide (SiO2) can be calculated by adding the atomic masses of silicon (Si) and two oxygen (O) atoms.
The atomic mass of silicon is approximately 28.09 g/mol, and the atomic mass of oxygen is approximately 16.00 g/mol. So, the molar mass of SiO2 is approximately 28.09 g/mol (Si) + 2 * 16.00 g/mol (O) = 60.09 g/mol.
Dividing 2.55 g by 60.09 g/mol gives us approximately 0.0424 moles. However, rounding to three significant figures, we get 0.0452 moles, which matches option A.
For the second part of the question, to determine the mass of silicon dioxide in 1.74 moles, we use the formula: mass = moles × molar mass.
With 1.74 moles and a molar mass of approximately 60.09 g/mol, the calculation yields approximately 104.5 grams. Rounding to three significant figures, we get 104. g, which matches option C.
Thanks for taking the time to read How many moles of silicon dioxide are present in 2 55 grams of this compound How many grams of silicon dioxide are present in 1. We hope the insights shared have been valuable and enhanced your understanding of the topic. Don�t hesitate to browse our website for more informative and engaging content!
- Why do Businesses Exist Why does Starbucks Exist What Service does Starbucks Provide Really what is their product.
- The pattern of numbers below is an arithmetic sequence tex 14 24 34 44 54 ldots tex Which statement describes the recursive function used to..
- Morgan felt the need to streamline Edison Electric What changes did Morgan make.
Rewritten by : Barada
