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maw [93]
3 years ago
8

A chemical or physical change that releases heat into its surroundings is.....

Chemistry
1 answer:
babymother [125]3 years ago
8 0
The answer is B. Melting ice I guess
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Acetic acid, CH3CO2HCH3CO2H, is the main organic constituent of vinegar. Draw an electron-dot structure for acetic acid. (The tw
malfutka [58]

Answer: acetic acid structure

Explanation:

In the lewis structure we have 24 valence electrons

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Which best defines nitrogen fixation
arlik [135]

Answer: the conversion of nitrogen gas into a usable form

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5 0
3 years ago
How do i solve number 36?
tresset_1 [31]
To cut this short and for your understanding, ionic bond is formed between metals (mostly right column in periodic table). Covalent bond is formed between non-metals (mostly left column in periodic table). So polar covalent is also a covalent bond but it is polar, which means the shape of molecules are not symmetrical hence maybe an atom in a molecule has most of the electron attracted to it causing itself to be partial negative (since electron are negatively charged) and the other atom has its electron being attracted by others became partial positive. Polar covalent can also be when H atom is binding either to F, O or N (also known as hydrogen bond).
6 0
3 years ago
why can scientists ignore the forces of attraction between particles in a gas under ordinary conditions
Galina-37 [17]
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8 0
3 years ago
What<br>was the initial volume of the hydrogen in cm3?​
svetlana [45]

Answer:

255.51cm3

Explanation:

Data obtained from the question include:

V1 (initial volume) =?

T1 (initial temperature) = 50°C = 50 + 273 = 323K

T2 (final temperature) = - 5°C = - 5 + 237 = 268K

V2 (final volume) = 212cm3

Using the Charles' law equation V1/T1 = V2/T2, the initial volume of the gas can be obtained as follow:

V1/T1 = V2/T2

V1/323 = 212/268

Cross multiply to express in linear form

V1 x 268 = 323 x 212

Divide both side by 268

V1 = (323 x 212)/268

V1 = 255.51cm3

Therefore, the initial volume of the gas is 255.51cm3

5 0
3 years ago
Read 2 more answers
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