Question 2 (1 point) An engineer is designing a device to reduce the chance of collisions between cars.
They have selected a solution and built a prototype. What is the next step?
test the prototype on model cars in a lab
compare the performance of the device to that of similar devices
research existing data on accidents involving cars
communicate the results by telling everyone about the prototype
Soraya Rostar S4645700993
joined session
Question 3 (1 point)

The formula is (nh4)2co3

257 grams h2o i think

Ithe undersigned only for use your own email and delete any and copies and of the itself and to be there is a good timewhat does a decrease in temperature indicate about the molecules in a sample of liquid water? decreased chemical energy of the moleculesdecreased kinetic energy of the moleculesincreased chemical energy of the moleculesincreased kinetic energy of the moleculeshow does a sample of helium at 15 â°c compare to a sample of helium at 215 k? the helium at 15 â°c has a higher average kinetic energy than the sample at 215 k.the helium at 15 â°c has lower nuclear energy than the sample at 215 k.the helium at 15 â°c has slower-moving atoms than the sample at 215 k.the helium at 15 â°c has smaller atoms than the sample at 215 k.

Answer ozone (o3) is made of three atoms of oxygen, it is a molecule;