A student tests the emission spectra of various known substances and an unknown substance. Which statement is a qualitative observation of the tests?
A. Two emission lines were seen in the spectra between 400 and 500 nm.
B. The unknown substance contains barium ions.
C. Sodium produces a yellow flame when heated.
D. Nitrate ions have no effect on the color emission.
Answers: 1
Physics, 22.06.2019 09:00
When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical
Answers: 2
Physics, 23.06.2019 08:20
What kind of air would be characteristic of a continental polar air mass? o a cold, dryob. warm, humido c. warm, dryo d. cold, wet
Answers: 1
Physics, 23.06.2019 13:30
Explain how waste energy is produced when an inefficient lightbulb converts electrical energy into radiant energy.
Answers: 2
Physics, 23.06.2019 14:00
Explain how the absorption of sound waves differs from the transmission of sound waves.
Answers: 1
A student tests the emission spectra of various known substances and an unknown substance. Which sta...
Arts, 02.02.2021 22:20
Spanish, 02.02.2021 22:20
Business, 02.02.2021 22:20
Mathematics, 02.02.2021 22:20
Advanced Placement (AP), 02.02.2021 22:20
History, 02.02.2021 22:20
Health, 02.02.2021 22:20
Mathematics, 02.02.2021 22:20
Mathematics, 02.02.2021 22:20
Mathematics, 02.02.2021 22:20
History, 02.02.2021 22:20