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2 years ago

Acetone and water are miscible. Acetone and hexane are also miscible.

1 answer:

8 0

The rule of thumb is that "like dissolves like"
Acetone has a C-C-C back bone making it similar to the hydrocarbon of hexane.
water's strongest intermolecular forces is hydrogen bonding while ether's is dispersion with some dipole-forces.

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Allisa [31]

Answer:

it can be recycled over and over again

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3 years ago

1. Which of the following is a physical change? (2 points) A newspaper burns when placed in a fire. An iron chair rusts when lef

Brilliant_brown [7]

An iron chair rusts when left outside.

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2 years ago

Read 2 more answers

A sample of carbon -12 has a mass of 6.00 g. How many atoms of carbon -12 are in the sample ?

nevsk [136]

Answer:

3.02e23

Explanation:

carbon molecular weight = 12 g /mol

1 mol = 6.02e23 atoms

your sample, 6 g / 12 g/mol = 0.5 mol

0.5 x 6.02e23 =

3 0

2 years ago

In which of the following compounds is the mass ratio of chromium to oxygen closest to 1.62 to 1.00?

ohaa [14]

Answer:

The answer to your question is letter A

Explanation:

Data

Mass ratio 1.62 to 1.00

Atomic mass Cr = 52 g

Atomic mass O = 16

Process

1.- Calculate the proportion Chromium to Oxygen to each possible solutions

a) CrO₃ = $\frac{52}{16 x 3} = \frac{52}{48} = 1.08$

b) CrO₂ = $\frac{52}{16 x 2} = \frac{52}{32} = 1.63$

c) CrO = $\frac{52}{16} = 3.25$

d) Cr₂O = $\frac{52 x 2}{16} = \frac{104}{16} = 6.5$

8 0

2 years ago

would you expect the N-O bond in HNO2 to be longer, shorter, or the same length as the N-O bonds in NO2^-

prohojiy [21]

Longer, this is because the H in HNO2 is bonded with an oxygen, no longer allowing this structure to have a resonance structure.
NO2 on the other hand has one double bond and one single bond, so it has a resonance structure. And resonance structures are actually one structure so there isn't really a single and double bond, it's actually a 1 and 1/2 bond that calls for a higher bond order.
And I higher bond order will result in a shorter lengths!
I hope this helps out!!! And just out of curiosity, is this off of an AP FRQ packet??

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2 years ago