Answers: 1
Chemistry, 21.06.2019 14:30
Which statement justifies that phosphine (ph3) is a polar molecule?
Answers: 1
Chemistry, 22.06.2019 17:50
Cryolite, na3alf6(s), an ore used in the production of aluminum, can be synthesized using aluminum oxide. start this question by first balance the chemical equation.1.) balance the equation: - alo3(s)+naoh(l)+hf(> na3alf6+h2o(g). 2.) if 17.5 kilograms of al2o3(s), 51.4 kilograms of naoh(l), and 51.4 kilograms of hf(g) react completely, how many kilograms of cryolite will be produced? 3.)which reactants will be in excess, (al2o3, naoh, or hf) 4.)what is the total mass of the excess reactants left over after the reaction is complete in kg?
Answers: 2
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
When water goes from its liquid state to a gas which are being broke...
History, 23.12.2019 05:31
English, 23.12.2019 05:31
Mathematics, 23.12.2019 05:31
Mathematics, 23.12.2019 05:31
Chemistry, 23.12.2019 05:31
Mathematics, 23.12.2019 05:31
English, 23.12.2019 05:31
Chemistry, 23.12.2019 05:31
Spanish, 23.12.2019 05:31
Mathematics, 23.12.2019 05:31
Chemistry, 23.12.2019 05:31
Mathematics, 23.12.2019 05:31
Biology, 23.12.2019 05:31