Which of the following changes has a decrease in entropy? A. N2O4 (g) yields 2NO2 (g)

B. C2H5OH (l) + 3O2 (g) yields 2CO2 (g) + 3H2O (g)

C. 3O2 (g) + 2KCl (s) yields 2KClO3 (s)

D. H2O (l) yields H2O (g)

When a nucleus absorbs a neutron and then breaks apart there are many products of the reaction. which of these is not a product of a nuclear fission reaction answers?

What is the speed at which molecules or atoms move dependent on temperature and state of matter?

Why don't magnets attract to wooden objects

What is the correct definition of force? moving an object slowing down a push or a pull speeding up

Ok so this is kind of a weird question so ... yeah. Anyway, I'm homeschooled but all my friends are getting ready for homecoming and I'm like I want to go to homecoming but I can't because ... I'm homeschooled.

Why are two nonpolar substances able to dissolve in each other?

Which of the following illustrates the conservation of matter? A. SnO2 + H2 - -> Sn + 2 H2O B. 2 C + O2 - -> CO2 C. KOH + HBr - -> KBr + H2O D. 6 Cs + N2 - -> 6 Cs3N I want to say B?

AIDS is caused by?

In 1928, 47.5 g of a new element was isolated from 660 kg of the ore molybdenite. the percent by mass of this element in the ore was:

What does the direction and length of velocity vector indicate