The substances sodium (Na), oxygen (O2), and sodium oxide (Na2O) participate in this chemical reaction: 4Na + O2 → 2Na2O. Which statement best describes the reaction? A. Elements rearrange, but no compounds are created or destroyed. B. Sodium oxide is created by the chemical reaction. C. Atoms from sodium oxide rearrange to form sodium and oxygen. D. In a mixture of the three substances, sodium oxide separates from the sodium and oxygen.
Answers: 3
Chemistry, 22.06.2019 10:40, justicejesusfreak
Which buffer would be better able to hold a steady ph on the addition of strong acid, buffer 1 or buffer 2? explain. buffer 1: a solution containing 0.10 m nh4cl and 1 m nh3. buffer 2: a solution containing 1 m nh4cl and 0.10 m nh3
Answers: 1
Chemistry, 22.06.2019 17:10, glitterpanda2468
Calculate the estimated density of each ball. use the formula d = m/v where d is the density, m is the mass, and v is the volume. record your calculations in table a of your student guide. given that the density of water is 1.0 g/cm3, make a prediction about whether each ball will float in water. record your prediction in table a. what is the estimated density of the table tennis ball? record your answer to the nearest hundredth
Answers: 2
Chemistry, 23.06.2019 00:00, tonimgreen17p6vqjq
The graph indicates the running route for tobias. which best describes his run? from time 0 to 6, he went fast and then slowed down. from time 6 to 10, he was at his slowest. from time 12 to 14, he went very slow. from time 14 to 18, he went toward the starting point.
Answers: 2
The substances sodium (Na), oxygen (O2), and sodium oxide (Na2O) participate in this chemical reacti...
Mathematics, 16.12.2020 01:00
Mathematics, 16.12.2020 01:00
Mathematics, 16.12.2020 01:00
Mathematics, 16.12.2020 01:00
Mathematics, 16.12.2020 01:00