Benny wonders why when he presses his finger against a map nothing
happens to the map. However, if he presses a thumbtack into the map using
the same force, the tack will probably poke a hole in the map. This is what his friends said was the reason:
Heather: I think it’s because the tack is made of metal.
Steve: I think it’s because your finger has more surface area.
Ashia: I think it’s because your finger is warm.
With whom do you agree most?
Explain
Answers: 3
Chemistry, 22.06.2019 15:00, levelebeasley1
Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.
Answers: 2
Chemistry, 22.06.2019 19:00, HaydenSturgis1
Which is the solubility product expression for caf2(s)?  [ca2+]/[f–]2  [ca2+][f2–]  [ca]+[f]2  [ca2+][f–]2
Answers: 3
Chemistry, 22.06.2019 20:10, jakhunter354
The lattice enthalpy (formation of ionic solid from ions in the gas phase) for agcl(s) is -916 kj/mol and the hydration enthalpy (dissolution of gaseous ions into water) is -850 kj/mol. how much heat (in joules) is involved in forming 1l of saturated agcl solution (1.8 × 10-4 g / 100 ml water) by dissolving agcl(s)? assume solution volume does not change much upon dissolution. the equations are given below. ag+(g) + cl−(g) æ agcl(s)
Answers: 3
Benny wonders why when he presses his finger against a map nothing
happens to the map. However, if...
English, 02.10.2020 23:01
Mathematics, 02.10.2020 23:01
English, 02.10.2020 23:01
Chemistry, 02.10.2020 23:01
Mathematics, 02.10.2020 23:01
Chemistry, 02.10.2020 23:01
Mathematics, 02.10.2020 23:01