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0:56 C X Get ready for the Computer Marked A... Which of the structures below better matches the provided 13C-NMR spectrum? T || 200 180 160 140 120 100 PPM 80 60 40 20 H H H... C. HO, CI H. H. H. O. CH3 В CI H. Save and Close Submit 191.0 140.1 135.0

Which is considered an elemental substance? A.CO (carbon monoxide) B.H2O (water) C.I2 (iodine) D.A and C are elemental substances. E.All of the above are elemental substances.

Signifi Bb My Bla Digital ng.cen Week Submit Answer HOME References Chemi ploymentid=5735112480241329813180832311&elSBN=9781305862883&id=1707785886&snaps... Min Bb NCBM g Use the References to access important values if needed for this question. G The st ✰ C Q Search this The liquid 1-chloropropane has a density of 0.890 g/mL at 20 °C. If a sample of this liquid at 20 °C has a volume of 1.97 L, how many grams of liquid are there in the sample?

Which of the following is a heterogenous mixture?   A. raisin bran   B. milk   C. coffee   D. air   E. sugar water

what is an atom? What is it characteristics? How does an atom live and exists in the biosphere?

What is the classification of the substance in the figure? A. element B. homogeneous mixture C. compound D. heterogeneous mixture

Apps M (28) - r.a... ɔlgl y University in Dubai... تسجيل الدخول - جام. . . D YouTube Maps M Gr Mc Graw Hill O of 27 Concepts completed Multiple Select Question Select all that apply Select all of the following that are characteristics of matter. O Takes up space Has mass O Always visible to the human eye O Present only in a solid form Need help? Revlew these concept resources.

23/ 25 The following set of data is described as (assume X₂-190): 168, 200, 153, 169 and 162 ppm a. Accurate and precise. b. Accute but not precise. c. Not accurate but precise. d. Not accurate and not precise. e. It is precise but difficult to judge the accuracy.

g shape, color, Choose all that apply. A. The property can be observed without changing the identity of the substanca B. The property depends on the amount of the substance present. C. The state of the substance changes when you measure the property. D. The property can be observed or measured. EVIDENCE NOTEBOOK 19. How do the physical properties of the rocks at the beginning of the lesson differ? Are there physical properties that might differ, but that you cannot observe in the photos? Record your evidence. Lesson 1 The Properties