Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons.?
A. How many electrons are present in 3 liters of water? (Note: 1 liter equals 1.00 × 10⁻³ m³).
B. What is the net charge of all these electrons?
3 Answers
Nov 14, 2024
This is just unit conversion, made confusing for you.
3 liters
x 10-3 m3/L
x 10^6 cm3/m3
x 1.00 g/cm3 = 3,000g
3,000g x 1 mol/18g x Na molecules/mole x 10 electrons/molecule = your answer
to transform from molecules to mass, you could desire to maintain on with this conversion course: molecules—>moles—->grams Divide the molecules via 6.022 x 10^23 (Avogadro’s huge style) to discover the style of moles. => 3.55 x 10^22 / 6.022 x 10^23 = .590 (3 important digits) x 10^-a million = .05895… mol H20 Now convert the moles to grams via multiplying the moles via the molar mass of water (H is extra or less a million g/mol, O is extra or less sixteen g/mol) = .05895… H20 x ((a million g/mol H x 2) + (sixteen g/mol O)) = .05895.. mol H20 x (17 g/mol H20) = a million.00 g H20 (alter using important digits) =D
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