Chemistry, 05.07.2019 09:00 cj31150631
The chemical formula of glucose is c6h12o6 , so it is classified as a(n) question 4 options: pure substance. element. solution. mixture.
Answers: 1
Chemistry, 21.06.2019 20:10
Why is the vapor pressure of a warm lake higher than the vapor pressure of a cold lake? o a. warm water has a greater heat of vaporization. ob. warm water evaporates more quickly. cool water evaporates more quickly. od. cool water has a greater heat of vaporization.
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Chemistry, 21.06.2019 22:30
Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density
Answers: 2
Chemistry, 22.06.2019 12:00
Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.
Answers: 3
Chemistry, 22.06.2019 18:10
Given the following at 25c calculate delta hf for hcn (g) at 25c. 2nh3 (g) +3o2 (g) + 2ch4 (g) > 2hcn (g) + 6h2o (g) delta h rxn= -870.8 kj. delta hf=-80.3 kj/mol for nh3 (g), -74.6 kj/mol for ch4, and -241.8 kj/mol for h2o (g)
Answers: 1
The chemical formula of glucose is c6h12o6 , so it is classified as a(n) question 4 options: pure s...
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