Answers: 2
Chemistry, 23.06.2019 02:30
When the ionic compound nabr dissolves in water, br– ions are pulled into solution by the attraction between what two particles? a. the na+ and br– ions b. the na+ ion and the negative end of a water molecule c. the br– ion and the positive end of a water molecule d. the br– ion and the negative end of a water molecule
Answers: 1
Chemistry, 23.06.2019 03:00
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
Answers: 3
Chemistry, 23.06.2019 05:30
Calculate the temperature rise when 0.2g of propane is used to heat 400cm cubed of water.
Answers: 3
If 2g of zinc granules was reacted with excess dilute HCl to evolve hydrogen gas which came to compl...
English, 17.01.2020 19:31
English, 17.01.2020 19:31
Mathematics, 17.01.2020 19:31
Mathematics, 17.01.2020 19:31
Mathematics, 17.01.2020 19:31
World Languages, 17.01.2020 20:31
English, 17.01.2020 20:31
Spanish, 17.01.2020 20:31
Biology, 17.01.2020 20:31
Spanish, 17.01.2020 20:31
English, 17.01.2020 20:31