Consider the following chemical reactions 2HNO3(aq)+Ca(OH)2-Ca(NO3)(aq)+2H2O( I)
state the law of conversation of mass?
show that the reaction obeys the law of conservation of mass?​

Determine the maximum r-value of the polar equation r =3+3 cos 0

Karen is running forward at a speed of 9 m/s. she tosses her sweaty headband backward at a speed of 20 m/s. the speed of the headband, to the nearest whole number relative to a stationary observer watching karen

Discuss how the hardness or softness of the landing surface is related to the time required to stop the egg