Which of the following categories best describes a chocolate chip cookie? a.
Mixture and homogeneous

b.
Pure substance and element

c.
Mixture and heterogeneous

d.
Pure substance and compound.

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0

|using the periodic tablewarm-upuse the periodic table in the tools bar to answer the following questions. what elemental classification does oxygen belongto? done

Determine the number of moles of air present in 1.35 l at 750 torr and 17.0°c. which equation should you use? n=pv/rt what is the number of moles present? ⇒ 0.056 mol a sample of n2 gas occupying 800.0 ml at 20.0°c is chilled on ice to 0.00°c. if the pressure also drops from 1.50 atm to 1.20 atm, what is the final volume of the gas? which equation should you use? v2= p1v1t2/p2t1 what is the final volume of the gas? ⇒ 932 ml these are the answers