Answers: 3
Chemistry, 22.06.2019 10:30
Balance and in which category does it fit in? single or double displacement or synthesis or decomposition? (a) k2 o ā k + o2 (b) na + i2 ā nai (c) cu(no3 )2 + naoh ā cu(oh)2 + nano3 (d) kclo3 ā kcl + o2 (e) ca(no3 )2 + hbr ā cabr2 + hno3 (f) sn(oh)2 ā sno + h2 o (g) p4 + n2 o ā p4 o6 + n2 (h) fe + al2 (so4 )3 ā feso4 + al (i) alcl3 + na2 co3 ā al2 (co3 )3 + nacl (j) c3 h6 + o2 ā co2 + h2 o
Answers: 1
Chemistry, 22.06.2019 14:30
100 grams of molten lead (600Ā°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21Ā°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/gā
Ā°c; the latent heat of fusion and the melting point of lead are 2.45 Ć 104 j/kg and 327Ā°c, respectively.)
Answers: 1
Chemistry, 22.06.2019 23:00
What is the energy in joules of a mole of photons associated with visible light of wavelength 486 nm?
Answers: 3
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