Chemistry, 02.09.2020 18:01 Natavia3402
A crew has to abandon ship. They find themselves in a lifeboat which has tins of food, a tin opener, a packet of plastic straws, a camping stove, matches, but no drinking water. They know that it is fatal to drink sea water. How can they obtain drinking water?
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Chemistry, 21.06.2019 13:00, Savadt2810
What is the ph of a solution with a concentration of 5.2 × 10–8 m h3o+?
Answers: 1
Chemistry, 22.06.2019 11:10, hannah2757
Which of the following shapes would represent a molecule with two bonded atoms and 3 lone pairs on only one of them , trigonal planar , bent , trigonal pyramidal , linear
Answers: 1
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
A crew has to abandon ship. They find themselves in a lifeboat which has tins of food, a tin opener,...
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