Chemistry, 20.11.2020 17:00 modelingavakin
How is the relationship between the duck and the plankton in the best described?
-Predator-prey
-Producer-predator
-Consumer-parasite
-Decomposer-consumer
Answers: 2
Chemistry, 21.06.2019 18:30
Covalent network solids typically have melting points and boiling points. the chemical formula of a network solid indicates in the molecule.
Answers: 3
Chemistry, 22.06.2019 16:30
An atom with 7 protons, 6 neutrons, and 7 electrons has an atomic mass of amu. (enter a whole number.) numerical answers expected! answer for blank 1:
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Chemistry, 22.06.2019 18:50
At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver
Answers: 1
Chemistry, 22.06.2019 20:00
There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .
Answers: 3
How is the relationship between the duck and the plankton in the best described?
-Predator-prey
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