Astudent mixes 100 ml of 0.50 m naoh with 100 ml of 0.50 m hcl in a styrofoam® cup and observes a temperature increase of at,. when she repeats thisexperiment using 200mlof each solution, she observes a temperature change of at2. if no heatis losttothesurroundings or absorbed by the styrofoam cup, what is the relationship betweenat, and at2?

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided

Volume is a measurement of how fast particles of a substance are moving

Pl what kind of reaction is this? nahco3 + h2o → co2 + naoh + h2o -composition -decomposition -single replacement -double replacement im leaning more toward single replacement. if im wrong can you explain whyy?