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Chemistry, 21.06.2019 19:00
Which term best describes the form sound takes as it travels away from a drum (a- gas)(b-music) ( c-waves) (d-particles
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Chemistry, 22.06.2019 00:30
Drive down any three characteristic of modern periodic table
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Chemistry, 22.06.2019 13:30
1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6
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Chemistry, 22.06.2019 14:30
100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)
Answers: 1
A solution contains an unknown amount of dissolved calcium. Addition of 0.112 mol of K3PO4 causes co...
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