He substance, cocl2, is useful as a humidity indicator because it changes from pale blue to pink as it gains water from moist air. what is its name?

Look at the reaction below: ca(hco3)2 --> caco3 + co2 + h2o first, balance the reaction. once balanced, use dimensional analysis or another method to find out how many moles of carbon dioxide will be produced if we start with 16.5 moles of calcium bicarbonate (calcium hydrogen carbonate). = mol of co2 number needs to be reported to three significant figures.

Atrain travels 74 kilometers in 3 hours, and then 81 kilometers in 5 hours. what is its average speed?

Acamcorder has a power rating of 17 watts. if the output voltage from its battery is 7 volts, what current does it use?units: