DU Diamand
Topac
Orthoclane
Mohs Hardness Scale
Scale Number
2 min
9
Common Object
Masonry Drill Bit
8.9)
Steel Nail (55)
Khille/Glass
Plate (5.5)
-Fuorte
Copper Penny (3.9
Gypsun
2
1
19. A geologist determines that a sample of a mineral can't be scratched by a steel nail but can be scratched by a masonry drill bit. Based
on this information, the sample mineral has to be softer than
O A fluorite.
OB. orthoclase.
OC. corundum.
O D. apatite.

Which type of respiration takes place when there is no oxygen present

Graded assignment lab report answer the questions below. which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.

Read the scenario below and answer the question that follows. hallie is reading a novel in the library when susan, her best friend, slumps down in a chair next to her. susan doesn't say anything, but hallie knows that susan is upset because she is slumping in her seat and rolling her eyes. a psychologist would explain that hallie is interpreting her friend's emotion based on a. the behavioral component of emotion b. her friend's ability to regulate emotion c. the verbal component of emotion d. the physiological component of emotion select the best answer from the choices provided a b c d