Air bags are activated when a severe impact causes a steel ball to compress a spring and electrically ignite a detonator cap. This causes sodium azide (NaN3) to decompose explosively according to the following reaction: 2NaN3(s) ® 2Na(s) + 3N2(g) What mass of NaN3(s) must be reacted in order to inflate an air bag to 75.0 l at STP?

Given the reaction: 2SO2(g) + O2(g) ®2SO3(g); DHo = -197.8 kJ Which statement is correct?

The heat of reaction measured using a constant volume, bomb calorimeter is equal the ______?

By early week 5 of gestation we expect to see which of the followings?

Fertilization takes place in the ……………………………………………….  of the fallopian tube as the zygote begins its development and moves toward the uterine cavity.

pregnancy failure is diagnosed when a CRL measurements is ………….. without cardiac function.

 On some continents most wood is used for fuel, but on other continents most wood is used for lumber.

Most high-level radioactive waste is currently stored on-site near the nuclear plant where it was used.

Combustion of natural gas increases atmospheric levels of greenhouse gases.  

 Silt particles are smaller than clay particles.