please answer as much as you can my grade is important label by number thank you

Question

please answer as much as you can my grade is important label by number thank you

depending on chemical e, or -0, depending on the chemical structure of the cryital 37. During which of the followisg processes does the eneropy of the eyedon iseasa Water vapor condenses on a cool surface um escapes from a hole in a Calcium cabosine stalactites form in a cave. d, Water freezes in a All of these increase entropy the system 38. Given the following data, determine the order ofthe reaction with nRp e-half e, three-halves 39, which of following a. The system gains enery and perfo and work is performed b. The m loses energy and personns work. The syste d. The leoes enerEN and work performed on it. energy ofa arm e. None of the changes A-D will always increase the tropes with oxygen formaitroges dioxide ses 40. The reaction energy. The charge in imemal energy is approsimately 664 of thermal d work is done on the sysaam by the The reactiari is exothermiv an hermie and work is done by the ae

Explanation / Answer

1.) d option is correct.

A substance consisting of atoms or ions of two or more different elements in definite proportions joined by chemical bonds into a molecule.

2.). e option is correct.

Total mass of three sample=106+33.25+12.058= 151.308g

4.)b option is correct.

F=9/5C+32

5.)c option is correct.

38Sr90

No. Of electron= 36

No of proton =38

No. Of neutron=90-38=52

6.)e option is correct.

S has 6 valence electron.

7.)c option is correct.

No. Of moles of water= no. Of molecules/Avogadro no.

16.). b option is correct.

Tellurium.

17.) d option is correct.

Like dissolve like.

18.) e option is correct.

Ba(OH)2+ 2HNO3====== Ba(NO3)2+ 2H2O

19.b option is correct.

Fe(NO3)3+3NaOH=== Fe(OH)3+3NaNO3

Mass of NaOH= 1.26×0.85×40=42.84g

120gNaOH forms 106.9gFe(OH)3

42.84g NaOH forms= 106.9×42.84/120= 38.2g

48.) a option is correct.

sp2 hybridization in COCl2.

49.)c option is correct.

This molecule is made up of 5 sp3d hybrid orbitals. Three orbitals are arranged around the equator of the molecule with bond angles of 120o. Two orbitals are arranged along the vertical axis at 90ofrom the equatorial orbitals. The shape of the orbitals is trigonal bipyramidal. Two of the equatorial orbitals contain lone pairs of electrons. The three atoms are arranged around the central atom to form a T-shaped molecule.

50.)c option is correct.

sp3d hybridization .

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