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# Acid - Common Component; Calculate Moles; Melting Point; VSEPR Theory; Ionic etc.

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Question 1
All acids have the common component H+, true or false?

Question 2
Calculate the number of moles of aluminum in 96.7g of Al.
a) 0.28
b) 3.6
c) 7.4
d) 4.2

Question 3
The melting point of bromine is -7°C. What is this in °F?
a) -12.6°F
b) -28.1°F
c) 19.4°F
d) 39.0°F
e) none of them are within 2°F of the right answer

Question 4
According to the VSEPR theory, the shape of the SO3 molecule is:
a) pyramidal
b) tetrahedral
c) trigonal planar
d) distorted tetrahedron
e) square planar

Question 5
Which one of the compounds below is most likely to be ionic?
a) GaAs
b) SrBr3
c) NO2
d) CBr4
e) H2O

https://brainmass.com/chemistry/bonding/acid-common-component-calculate-moles-melting-point-vsepr-theory-ionic-etc-39894

#### Solution Preview

1. True
2. b) moles = mass / molar mass
= 96.7 g / 26.98 g/mol
= 3.58 mol
3. e) none of them are correct
because T(K) = T(C) + 273.15
= ...

#### Solution Summary

The solution explains the correct answer to each multiple choice question, either equationally or through short answer.

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