Science! fast! 1 question
1. why do you think some countries have a much higher population d...
Chemistry, 26.11.2019 12:31 Nathaliasmiles
Science! fast! 1 question
1. why do you think some countries have a much higher population density than others?
Answers: 2
Chemistry, 22.06.2019 07:00
This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.
Answers: 1
Chemistry, 22.06.2019 07:30
11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg
Answers: 3
Chemistry, 22.06.2019 15:20
Which description best characterizes the motion of particles in a solid?
Answers: 2
Chemistry, 23.06.2019 01:00
Imagine if during the cathode ray experiment, the size of the particles of the ray was the same as the size of the atom forming the cathode. which other model or scientific observation would have also been supported? 1. this would support dalton's postulates that proposed the atoms are indivisible because no small particles are involved. 2. this would support bohr's prediction about electrons moving in orbits having specific energy. 3. this would support bohr's prediction about electrons being randomly scattered around the nucleus in the atom. 4. this would support dalton's postulates that proposed that atoms combine in fixed whole number ratios to form compounds.
Answers: 1
Mathematics, 02.10.2019 09:30
Biology, 02.10.2019 09:30
Social Studies, 02.10.2019 09:30
Social Studies, 02.10.2019 09:30
English, 02.10.2019 09:30
Geography, 02.10.2019 09:30
Biology, 02.10.2019 09:30
Mathematics, 02.10.2019 09:30