How many liters of nitrogen gas are needed to react with 90.0 g of potassium at stp in order to produce potassium nitride according to the following reactions?

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

56.16 gregor mendel was the first scientist to use statistics to analyze scientific data. before mendel's experiments, scientists believed that organisms acquired traits from their environment and passed them on to their offspring. after mendel's discoveries were accepted, scientists realized that traits passed to offspring were the result of genes being passed from parents to offspring. this is an example of pls

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.