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Step2247 [10]
3 years ago
12

Pls answer I am giving lots of points and need all the work shown. Determine the kb for chloroform when 0.793 moles of solute in

0.758 kg changes the boiling point by 3.80 °C.
Chemistry
1 answer:
navik [9.2K]3 years ago
8 0

Answer:0.87

Explanation:

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Which term names a small icy object that orbits the sun?
RSB [31]

Answer:

It a comet

Explanation:

that why they are also called dirty snowballs

8 0
3 years ago
Write the condensed formula from left to right, starting with (CH3)x where x is a number.
pochemuha

Complete question:

Write the condensed formula from left to right, starting with (CH3)x where x is a number.

See attached image for the structure formula of the compound

Answer:

(CH₃)₂CHC(CH₃)₃ named as 2,2,3-Trimethylbutane

Explanation:

If we number the longest chain of the carbon starting from the left, we will observe that there are four carbons in the straight chain as shown in the image.

Starting from first carbon from the left of the carbon chain, at carbon number number 2, there two alkyl group, that is two methyl (CH3 is two). Also at carbon number 3, there are three alkyl group, that is three methyl (CH3 is three).

The condensed formula will be written as;

(CH₃)₂CHC(CH₃)₃

This compound is named as 2,2,3-Trimethylbutane, an isomer of Heptane

3 0
3 years ago
2. Paano nakatutulong ang mga hakbang sa pagbuo ng isang panimula at makabuluhang
Dmitry [639]
Hey man I think you put the wrong country on your settings
6 0
3 years ago
Which statement is not correct regarding radiation? Nuclear reactions arise from an atom's nucleus. Alpha, Beta, and Gamma are t
Rina8888 [55]

Answer:

I believe it is the last statement.

Explanation:

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6 0
3 years ago
Determine the number of moles in each substance.
olchik [2.2K]

Answer:

a) 5.4 * 10^-4 moles

b) 8.2 moles

c) 0.26 moles

d) 20.76 moles

Explanation:

a)Since 1 mole of a substance has 6.02 * 10^23 atoms

x moles is present in  3.25 x 1020 atoms of lead

3.25 x 1020 atoms of lead/6.02 * 10^23 atoms = 5.4 * 10^-4 moles

b) Since 1 mole of a substance has 6.02 * 10^23 molecules

x moles is present in  4.96 x 1024 molecules of glucose

x = 4.96 x 1024 molecules of glucose/6.02 * 10^23 molecules = 8.2 moles

c) Since 1 mole of a substance has 6.02 * 10^23 formula units

x moles is present in 1.56 x 1023 formula units of sodium hydroxide

x =  1.56 x 1023 formula units /6.02 * 10^23 = 0.26 moles

d) Since 1 mole of a substance has 6.02 * 10^23 ions

x moles is present in 1.25 x 1025 copper(ll) ions

x = 1.25 x 1025 copper(ll) ions/6.02 * 10^23 ions = 20.76 moles

8 0
3 years ago
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