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antiseptic1488 [7]
3 years ago
15

OMG PLEASE HELP!

Chemistry
1 answer:
Paraphin [41]3 years ago
4 0
Assuming the temperature is 20° C,
100 g of water dissolves 34 g,
200 g of water will dissolve: 200 x 34 / 100
= 68 g

The third option is correct.


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Balance the equation to show the reaction between H2SO4 and cu(OH)2​
sveticcg [70]

Answer:

H2SO4 + Cu(OH)2​ ---> CuSO4+ 2H2O

5 0
3 years ago
18. Suggest an explanation for the observations that ethanol, C2H5OH, is completely miscible with water and that ethanethiol, C2
nydimaria [60]

Answer:

              Ethanol is completely miscible due to <u><em>presence</em></u> of Hydrogen bonding.

              Ethanethiol is partially miscible due to <u><em>absence</em></u> of Hydrogen Bonding.

Explanation:

                     The miscibility of liquids depend upon the intermolecular interactions between the two liquids. The stronger the intermolecular interactions the more miscible will be the liquids.

Among the two given examples, Ethanol is more miscible in water because it exhibits hydrogen bonding which is considered the strongest intermolecular interaction. Hydrogen bonding occurs when the hydrogen atom is bonded to more electronegative atoms like Fluorine, Oxygen and Nitrogen. In this way the hydrogen atom gets partial positive charge and the electronegative atom gets partial negative charge. Hence, these partial charges results in attracting the opposite charges on other surrounding atoms.

While, in case of Ethanethiol the hydrogen atom is not bonded to any high electronegative atom hence, there will be no hydrogen bonding and therefore, there will be less interactions between the neighbour atoms.

6 0
3 years ago
Can isotopes have different atomic numbers
Tpy6a [65]

Answer:

No

Explanation:

Atomic number represents the identity of atoms

using number of protons which is equal in isotopes.

6 0
3 years ago
What is the equation for SHC? Give all<br> units
barxatty [35]

Answer:

Q=mcΔT

Explanation:

The formula for expressing the amount of heat transferred between energy stores is given by the equation. The specific heat capacity of water is 4180 J/kgoC (Joules per kilogram per degree), this means it takes 4180 J of heat energy to raise the temperature of 1 kg of water by 1oC.

3 0
2 years ago
which one of the following groups are decomposers a. algae b. protist c. fungi d. green plants e. photosynthetic bacteria
alukav5142 [94]

Answer:c

Explanation:

7 0
2 years ago
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