Ernest Rutherford’s experiment supported that the atom contains a positively-charged nucleus. Why then does our data show that the electrons are not all crashing into the nucleus? Choose the best answer. Group of answer choices A. Electrons are also positively charged and like charges repel one another.

B. Electrons must all have the same spin and this cannot be accomplished if they are all located in the nucleus.

C. Electrons only exist in their excited states but if a ground state were possible, then they would be located in the nucleus.

D. Electrons only exist in certain energy levels both in the ground state and excited state.

E. All of the above explain why the electrons are not all crashing into the nucleus.

In what way do investigations build scientific knowledge? the results of investigations lead to questions that cannot be tested. they reflect the opinions and social values of scientists, ensuring valid information. the results of investigations lead to new questions, which lead to new investigations. they are not influenced by the research of earlier scientists, so they are able to address gaps in understanding. i

Air pressure is measured in pascals. for a professional american football game, the ball should be inflated to about 90,000 pascals. scientists studied the effects of air temperature on the pressure inside american footballs by taking these steps: 1. prepare 100 footballs. 2. measure each football's air pressure. 3. divide footballs into 10 groups. 4. place the groups in different lockers cooled to different air temperatures. 5. after 12 hours, remove the footballs from lockers. 6. measure each football's pressure again. 7. compare the new pressures to the starting pressures. what two terms best describe the variable "air pressure inside the football" in this experiment? independent, qualitative independent, quantitative dependent, qualitative dependent, quantitative

How many liters of water can be produced from 5.0liters of butane gas at stp, assuming excess oxygen? c4h10(g) + 02(g) → co2 (e) + h2o (g)