(04.01 MC) A chemical equation is shown below. FeCl3 + NaOH → NaCl + Fe(OH)3 What are the coefficients that should be added to balance this equation? Use complete sentences to explain your answer. Explain how this chemical reaction demonstrates the conservation of mass. (10 points)

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? a. the balloons both rise. the cold balloon is larger than the warm balloon. b. the balloons rise at the same rate. both balloons are the same size. c. the warm balloon expands and rises. the cold balloon shrinks and sinks. d. the cold balloon expands and rises. the warm balloon shrinks and sinks.

What are the variables in gay-lussac’s law? pressure and volume pressure, temperature, and volume pressure and temperature volume, temperature, and moles of gas