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nataly862011 [7]
3 years ago
13

calculate the amount of heat needed to boil 119. g of benzene, beginning from a temperature of 5.9°C.​

Chemistry
2 answers:
Keith_Richards [23]3 years ago
5 0
Okie so I can see you at the church in the morning or in a second and I don’t have
givi [52]3 years ago
4 0
Whajsjsisisihsisaooaaoapalsk
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Which has a lower electronegativity: sodium or rubidium?
sammy [17]

Answer:

sodium has a lower electronegativity:)

Explanation:

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2 years ago
I have little or no rainfall for long periods of time. I cause death to all living things because of lack of water. What am I?
Doss [256]

Answer:

a drought !

- little to no water causes it

- it causes for organisms to die and organisms need water !

4 0
3 years ago
Which compound will have the larger rf value on a si02 tlc plate using 10 % ethyl acetate/ hexane as eluent: 3-decanone or 3-dec
Hatshy [7]

The formula of determining the R_f value is:

R_f = \frac{distance travelled by the solute}{distance travelled by the solvent}

where both the distance are measured from the common origin.

10 % ethyl acetate/ hexane means it has 10 % ethyl acetate and 90 % hexane which are non-polar in nature. Hence, the non-polar compound will travel farther in the TLC plate along with the eluent and the polar compound will travel less as they remain attracted to the polar adsorbent SiO_2.

Among 3-decanone and 3-decanol, 3-decanone will have high R_f as it is non-polar.

Among toluene and benzoic acid, toluene will have high R_f as it is non-polar.

Among cyclooctane and cyclooctanone, cyclooctane will have high R_f as it is non-polar.

7 0
4 years ago
The fundamental particles of protons and neutrons are called....
zaharov [31]
The Answer is C) Quarks
6 0
3 years ago
Read 2 more answers
Perform the following
docker41 [41]

Answer:

8.73

Explanation:

when you are adding or subtracting numbers, the sigfig (significant figure) is based on how many numbers after the decimal. with this info, we can see that 15.67 has 2 sigfigs and 6.943 has 3 sigfigs. when you subtract normally, you would get 8.727, which has 3 sigfigs, so you would round the last 7 up to get 8.73 with 2 sigfigs!

also it is to 2 sigfigs because we know that we go by the least number of sigfigs. hope this helped!

3 0
3 years ago
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