Question 15
How are isotopes of the same element alike? Select all that apply.
O They have t...
Chemistry, 16.12.2021 05:30 bibhu42kumarp7o4ss
Question 15
How are isotopes of the same element alike? Select all that apply.
O They have the same number of protons.
They have the same atomic number.
They have the same number of neutrons.
They have the same mass numbers.
Answers: 3
Chemistry, 22.06.2019 20:10
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 Γ 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) + clβ(g) Γ¦ agcl(s)
Answers: 3
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Which of the following describes qualitative data? a) recording the temperature of a solid as it is warmed. b) noting the color of a solution as it is heated. c) measuring the volume of an object by water displacement. d) taking the mass of an object using a balance.
Answers: 2
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Match the vocabulary terms to their definitions. 1 . a long, chain-like set of molecules made up of repeating units joined end to end polymer 2 . a hard, brittle, heat- and corrosion-resistant material made by subjecting a nonmetallic mineral mixture to intense heat ceramic 3 . a plastic with low elongations that cannot be recycled thermoset 4 . a carbon fiber embedded in a polymer resin matrix thermoplastic 5 . a plastic with high elongations that can be recycled crystal 6 . a solid form resulting from the arrangement of atoms, ions, or molecules in definite geometric patterns composite
Answers: 1
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