Chemistry, 16.12.2019 00:31 henrylauren2006

1. how many grams would 8.1 x 1021 molecules of sucrose (c12h22011)
weigh?

Answers: 1

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Answers

Answer from: rhill5

The mass in grams of 8.1 x 10²¹ molecules of sucrose (C12H22011) is 4.62g.

HOW TO CALCULATE MASS:

The mass of a substance can be calculated by multiplying the number of moles by its molar mass. That is;mass (g) = no. of moles (mol) × molar mass (g/mol). However, the number of moles must be calculated by dividing the number molecules in the compound by Avogadro's number:no. of moles = 8.1 x 10²¹ ÷ 6.02 × 10²³no. of moles = 1.35 × 10-²molesMolar mass of (C12H22011) = 12(12) + 1(22) + 16(11)

= 144 + 22 + 176

= 342g/mol

mass (g) = 0.0135mol × 342g/molmass (g) = 4.62gTherefore, the mass in grams of 8.1 x 10²¹ molecules of sucrose (C12H22011) is 4.62g.

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Answer from: gabbypittman20

Mass = 4.6 g

Explanation:

Given data:

Number of molecules of sucrose = 8.1 ×10²¹ molecules

Mass of sucrose = ?

Solution:

First of all we will calculate the number of moles by using Avogadro number.

1 mole × 8.1 ×10²¹ molecules / 6.022×10²³ molecules

1.35 × 10⁻² mol

Mass of sucrose:

Mass = number of moles × molar mass

Molar mass = 342.3 g/mol

Mass = 1.35 × 10⁻² mol ×342.3 g/mol

Mass = 462.1 × 10⁻² g

Mass = 4.6 g

Answer from: Quest

no, i was listening to water by schoolboy q while and i saw this question

explenation:

water isn't wet. wetness is a description of our experience of water; what happens to us when we come into contact with water in such a way that it impinges on our state of being. we, or our possessions, 'get wet'. a less impinging sense experience of water is that it is cold or warm, while visual experience tells us that it is green or blue or muddy or fast-flowing. we learn by experience that a sensation of wetness is associated with water: 'there must be a leak/i must have sat in something.'

Answer from: Quest

that tool would be a compass

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Idon't really understand this can you me and show your work.☺☺[ chemistry b] subject [ electron transfer in lonic bonds]grade( 12)