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Effectus [21]
3 years ago
9

Please can someone explain the experiment?

Chemistry
1 answer:
Lesechka [4]3 years ago
6 0
Ghhfgfgvfgvvfgggggsguydygg if ffhgyhh
You might be interested in
A student used a balance to measure 34.82 g of a chemical. Which digit of the measurement has the greatest uncertainty?
Nezavi [6.7K]

Answer:

tenths-place digit is uncertain

7 0
3 years ago
If there are 9.02x103 amu of copper in a sample, how many copper atoms are there in<br> the sample?
Sergeu [11.5K]

Answer:

Average atomic mass = 63.62 amu

Explanation:

Average atomic mass is the weighted average of the individual isotopes.

And thus the weighted average =

(0.6917×63+0.3083×65)⋅amu = ?? amu.

Note that we have not accounted for the less massive copper isotopes that would decrease this mass to the accepted value of

63.55 amu.

Hope this helps! Good luck!

7 0
2 years ago
Answer this for me please I got homework from science and it's confusing me
viktelen [127]

type the question please. The picture is to hard to see


8 0
4 years ago
The boiling point elevation of an aqueous sucrose solution is found to be 0.39°C.
SVEN [57.7K]

Answer:

130.4 grams of sucrose, would be needed to dissolve in 500 g of water.

Explanation:

Colligative property of boiling point elevation:

ΔT = Kb . m . i

In this case, i = 1 (sucrose is non electrolytic)

ΔT = Kb . m

0.39°C = 0.512°C/m . m

0.39°C /0.512 m/°C = m

0.762 m (molality means that this moles, are in 1kg of solvent)

If in 1kg of solvent, we have 0.712 moles of sucrose, in 500 g, which is the half, we should have, the hallf of moles, 0.381 moles

Molar mass sucrose = 342.30 g/m

Molar mass . moles = mass

342.30 g/m . 0.381 m = 130.4 g

6 0
4 years ago
True or false: (a) For molecules with similar molecular weights, the dispersion forces become stronger as the molecules become m
g100num [7]

Answer:

A ,B- false

C,D- true

Explanation:

Dipole forces always lead to stronger attraction and boiling points than dispersion forces. When linear molecules are involved, they often posses greater dipole forces and higher boiling points. Linear alkanes posses higher boiling points than branched alkanes.

3 0
3 years ago
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