A student dissolves 4.51 grams of sodium hydroxide in 100.0 mL of water at 19.5 °C in a calorimeter. As the sodium hydroxide dissolves, the temperature of the surrounding water increases to 31.7 °C. What is the heat involved in the dissolving of the sodium hydroxide (the q)?

Adrop of acetone (nail polish remover) has a mass of 35 mg and a density of 0.788 g/cm3. what is its volume in cubic centimeters?

The human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %