21. Complete the table for the equation a= F/m, when m= 1 kg. Then graph the points.
Force (N) Acceleration (m/s)
0
2
3

How does concentration affect reaction rate

When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from the mixture. 1. does the appearance of bubbles indicate a physical or chemical change? 2. why do the bubbles indicate this change? 3. what property is this?

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