Verb. 1. impel-urge or force (a person) to an action; constrain or motivate. force. cause, do, make-give rise to; cause to happen or occur, not always intentionally; cause a commotion; make a stir; cause an accident.= force) â noetigen; nÃ¶tigen to impel somebody to do â something (jdn) dazu, noetigen nÃ¶tigen etw; zu tun to (impel)somebody in â to action Jdn zum. (= handeln noetigen) â (nÃ¶tigen)drive. on voran treiben
1 Ratio of the salt to the acid or base. 2  The buffer capacity is optimal when the ratio is 1:1; that is, when pH = pKa. 3  Total buffer concentration. 4  For example, it will take more acid or base to deplete a 0.5 M buffer than a 0.05 M buffer.
To calculate the size water heater you need, evaluate capacity versus consumption. Compare water tank capacity or continuous flow rate to peak usage rate. Showers are the key. Multiply the showerhead flow rate by the average length and number of showers in a given period of time. Choose a water heater with capacity to match.