Chemistry, 13.11.2019 05:31 priscillavaladez1112
Which of the following provided evidence that most of the mass of the atom, as well as all of the positive charge, is concentrated in a very small core (the nucleus)? 1. the analysis of x-ray wavelengths 2. the existence of elements with noninteger values for atomic weights 3. the deflection of ions in a mass spectrometer 4. the results of the millikan oil-drop experiment 5. the scattering of α particles by a metal foil
Answers: 1
Chemistry, 22.06.2019 11:30
If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.
Answers: 3
Chemistry, 22.06.2019 18:00
The human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.
Answers: 1
Chemistry, 22.06.2019 18:00
How does climate change cause the ocean's thermohaline current to slow down?
Answers: 3
Chemistry, 23.06.2019 00:10
Covalent compounds: mastery test select the correct answer what is formed when atoms join together with a covalent bond? a. an ion b. a molecule c. a neutral atom d. a noble gas
Answers: 3
Which of the following provided evidence that most of the mass of the atom, as well as all of the po...
Mathematics, 14.12.2020 22:10
SAT, 14.12.2020 22:10
Mathematics, 14.12.2020 22:10
Mathematics, 14.12.2020 22:10
English, 14.12.2020 22:10
Health, 14.12.2020 22:10
English, 14.12.2020 22:10
Mathematics, 14.12.2020 22:10
History, 14.12.2020 22:10
French, 14.12.2020 22:10
History, 14.12.2020 22:10
Social Studies, 14.12.2020 22:10
Mathematics, 14.12.2020 22:10