Chemistry, 24.06.2019 01:30 jorgeb12316

Select all of the atoms which bear lone electron pairs. gray = c; white = h; red = o; blue = n; dark green = cl; brown = br; light green = f; purple = i; yellow = s; orange = p. double click to select atoms.

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Mass is the amount of matter in an object. weight is the measurement of the pull of gravity on an object. say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165) now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon. however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant. in conclusion it is possible for your weight to change as your mass remains constant.

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It is a ok i know i have a brain functioning well.

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answer is: empirical formula is tl₂o. if we use 100 grams of compound, tha:

m(tl) = 96.2% · 100 g ÷ 100%.

m(tl) = 96.2 g.

n(tl) = m(tl) ÷ m(tl). n(tl) = 96.2 g ÷ 204.4 g/mol.

n(tl) = 0.47 mol. m(o) = 3.77 g. n(o) = m(o) ÷ m(o). n(o) = 3.77 g ÷ 16 g/mol. n(ag) = 0.235 mol. n(tl) . n(o) = 0.47 mol : 0.235 mol /0.235. n(tl) . n(o) = 2 : 1.

m(tl₂o) = 204.4 g/mol · 2 + 16 g/mol = 424.8 g/mol.

m(compound) = 456. 8 g/mol - 424.8 g/mol = 32 g/mol ( 2 oxygens); tl₂o₃.

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Reaction involved in present system is : c12h22o11 + h2o → 2 c6h12o6the reaction system is obeying following rate law: rate = k[c12h22o11]thus, it is a first order reaction.now, for 1st order reactionrate constant (k) = $\frac{2.303}{t} log \frac{\text{initial conc.}}{\text{final conc.}}$ given: initial conc. = 3.0 g, final conc. = 2.7 g, t = 2.5 h∴rate constant (k) = $\frac{2.303}{2.5} log \frac{\text{3.0}}{\text{2.7}}$ ∴ k = 0.04215 h-1now, for 1st order reaction, half life = 0.693/k = 0.693/0.04215 = 16.4 hthus correct answer is option b

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Select all of the atoms which bear lone electron pairs. gray = c; white = h; red = o; blue = n;...

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