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Otrada [13]
3 years ago
11

Helllooooooooooooooooo

Chemistry
2 answers:
Serggg [28]3 years ago
6 0

Answer:

hi

Explanation:

hi

ExtremeBDS [4]3 years ago
4 0

Answer:

wassuuuuuuuuuuuuuuuuuuuuuuuup

Explanation:

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Room temperature is usually considered to be 25°C. What is that in kelvins?
allochka39001 [22]
C + 273.15 = temp. in Kelvins.
25° C would be 298.15 k.
8 0
3 years ago
5.6
lesantik [10]
200/19.32=10.352ms^-1
7 0
3 years ago
Read 2 more answers
List the four forms of acid deposition.
liq [111]

Explanation:

rain, snow, cloud, fog or dry deposition - Dry particles, or gas

4 0
3 years ago
A mixture contains 20% iron ions by mass. What mass of iron chloride (FeCl) would
omeli [17]

Mass of iron chloride (FeCl₂) : 22.68 g

<h3>Further explanation</h3>

Proust stated the Comparative Law that compounds are formed from elements with the same Mass Comparison so that the compound has a fixed composition of elements

In the same compound, although from different sources and formed by different processes, it will still have the same composition/comparison

With this law, we can calculate how many grams an element is needed to make a compound with a certain mass, as desired

<h3 />

\tt mass~Fe=\dfrac{Ar~Fe}{MW~FeCl_2}\times mass~FeCl_2

The iron ions in 50 g mixture :

\tt 20\%\times 50~g=10~g

\tt 10=\dfrac{56}{127}\times mass~FeCl_2\\\\mass~FeCl_2=22.68~g

8 0
3 years ago
(b) What is the pKa of the dimethylammonium ion, (CH₃)₂NH₂⁺ ?
g100num [7]

The pKa of the dimethylammonium ion, (CH₃)₂NH₂⁺ is 10.7.

<h3>What do we know about  dimethylammonium ion?</h3>

The conjugate acid of dimethylamine, dimethylaminium is an organic cation and a significant species at pH 7.3. It is a secondary aliphatic ammonium ion and an organic cation. It is a dimethylamine conjugate acid.

<h3>What do we understand by pKa?</h3>

In layman's terms, pKa is a measurement of an acid's strength. A strong acid will have a pKa value that is lower than 0. To be more specific, pKa is the Ka value's negative log base ten value (acid dissociation constant). How tightly a proton is retained by a Bronsted acid is how the strength of an acid is measured. The strength of the acid and its capacity to donate protons increase with decreasing pKa values.

To learn more about pKa:

brainly.com/question/13178964

#SPJ4

7 0
1 year ago
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