Physics, 28.12.2019 04:31 sunarafet3814
Zinc metal reacts with hcl as follows: zn + 2 hcl ⇒ zncl2 + h2 what mass of zinc metal is needed to produce 600.0 ml of hydrogen gas collected over water at 30.0°c and at 775 mmhg?
Answers: 1
Physics, 22.06.2019 10:30
The freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude) it is easier for water molecules to escape from liquid into the air. in a high altitude city such as denver, colorado compared to a sea-level city such as houston, texas, water
Answers: 2
Physics, 22.06.2019 12:00
Asolid round steel rod 6.25 mm in diameter and 375 mm long is rigidly bonded to the end of solid square brass rod 25 mm on a side and 300 mm long. the geometric axes of the bare are along the same line. an axial tensile force of 5.4 kn is applied at the extreme ends of the assembly. for steel e = 200 gpa and for brass e = 90 gpa. determine the total elongation for the assembly.
Answers: 1
Zinc metal reacts with hcl as follows: zn + 2 hcl ⇒ zncl2 + h2 what mass of zinc metal is needed to...
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