Chemistry, 03.12.2019 02:31, ethanmoct6
Classify each of these reactions. ba(clo3)2(s)⟶bacl2(s)+3o2(g)ba(clo3 )2(s)⟶bacl2(s)+3o2(g) acid–base neutralization precipitation redox none of the above 2nacl(aq)+k2s(aq)⟶na2s(aq)+2kcl(aq) 2nacl(aq)+k2s(aq)⟶na2s(aq)+2kcl(aq) acid–base neutralization precipitation redox none of the above cao(s)+co2(g)⟶caco3(s)cao(s)+co2(g) ⟶caco3(s) acid–base neutralization precipitation redox none of the above koh(aq)+agno3(aq)⟶kno3(aq)+agoh(s)k oh(aq)+agno3(aq)⟶kno3(aq)+agoh(s) acid–base neutralization precipitation redox none of the above
Answers: 2
Chemistry, 22.06.2019 01:30, adrian08022
When an object falls through the air and encounters air resistance its overall speed will be than if it had not encountered air resistance? (one word answer)
Answers: 2
Chemistry, 22.06.2019 11:40, Wemaybewrong
Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)
Answers: 1
Chemistry, 22.06.2019 17:10, hahahwha
Acalorimeter is to be calibrated: 51.203 g of water at 55.2 degree c is added to a calorimeter containing 49.783 g of water at 23.5c. after stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degree c. specific heat capacity of water (s = 4.18 j/g∙degree c). calculate the calorimeter constant. (smδt)warm water = -[(smδt)cold water + (calorimeterδtcold water)]
Answers: 2
Chemistry, 22.06.2019 21:00, rhondafits9000
Which property of water causes water drops to bead on a freshly waxed car?
Answers: 2
Classify each of these reactions. ba(clo3)2(s)⟶bacl2(s)+3o2(g)ba(clo3 )2(s)⟶bacl2(s)+3o2(g) acid–bas...
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