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nlexa [21]
3 years ago
14

H2O,NH4,CO2 এ কয়টি মুক্তজোড় বা বন্ধন জড়ো ইলেকট্রন রয়েছে?

Chemistry
1 answer:
Llana [10]3 years ago
8 0

Answer:

água, amônia, gás carbônico

Explanation:H2O-> porque são dois átomos de hidrogênio e um de oxigênio; NH4-> poque é um átomo de nitrogênio e quatro átomos de hidrogênio e CO2->porque é um átomo de carbono e dois átomos de oxigênio

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almond37 [142]

Answer:

hair is a physical change.

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6 0
2 years ago
Which law states that the volume and absolute temperature of a fixed quantity of gas are directly proportional under
Radda [10]

Answer:

O Charles's law .

Explanation:

Hello!

In this case, since the use of gas laws leads to a good comprehension of how gases behave towards volume, pressure and temperature, we can review that the Boyle's law explains the pressure-volume variation, the Dalton's law the partial pressure effect, the Gay-Lussac's law that of pressure and temperature and the Charles' that of temperature and volume at constant pressure; thus, the answer for the asked question is:

O Charles's law

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8 0
2 years ago
Li2SO4 _____ an electrolyte in solution.<br> A. Is <br> B. Is not
Rasek [7]

Answer:

a

Explanation:

it is an electrolyte because of its strong polar chemical bond

8 0
2 years ago
Read 2 more answers
If the temperature of 15 grams of water changes from 21C to 24C, how many joules of heat were involved? Show work
goblinko [34]

Answer:

189 Joules

Explanation:

Applying,

Q = cm(t₂-t₁)............. equation 1

Where Q = Heat, c = specific heat capacity of water, m = mass of water, t₁ = Initial Temperature, t₂ = Final temperature.

From the question,

Given: m = 15 grams = 0.015 kg, t₁ = 21 °C, t₂ = 24 °C

Constant: c = 4200J/kg.°C

Substitute these values into equation 1

Q = 0.015×4200×(24-21)

Q = 0.015×4200×3

Q = 189 Joules

6 0
2 years ago
What is the main purpose of patent attorneys?
Aneli [31]
To protect the patents of those they work . Patents are legal rights of ownership to something that you have made or created.


Please vote my answer branliest! Thanks .
3 0
3 years ago
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