During an investigation, equal volumes of hot and cold baking soda solution and calcium chloride solution were mixed in four cups. A record of the investigation is shown below: Investigation Record
CupBaking Soda SolutionCalcium Chloride Solution
WHotCold
XColdCold
YColdHot
ZHotHot

Baking soda reacts with calcium chloride to form bubbles. In which cup will bubbles form the fastest?
Cup W
Cup X
Cup Y
Cup Z

What do elements in a family tend to share. a.) similar periods b.) similar groups c.) similar atomic symbols d.) similar chemical properties and characteristics

Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6 x 10- 11 m2 /s, and the diffusion flux is found to be 1.2 x 10-7 kg/m2 -s. also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3 . how far into the sheet from this high-pressure side will the concentration be 2.0 kg/m3 ? assume a linear concentration profile.

Acaterpillar tries to climb straight up a wall a meter high, but for every 2 cm up it climbs, it slides down 1 cm. eventually, it reaches the top. when it reaches the top, it does not pull itself over so it will slide down 1 cm. what is the total displacement traveled?