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OLEGan [10]
3 years ago
13

HeLpPp asap I’ll mark you as brainlister

Chemistry
1 answer:
jeka57 [31]3 years ago
8 0
It’s 1 or 3 sorry if this is wrong
You might be interested in
How to find molarity 1.mass 2. molar mass 3. volume of water added?
anyanavicka [17]

Molarity = (numer of mole solute) / (volume of the solution)

number of mole solute = mass solute/molar mass solute

Molarity =( mass solute/molar mass solute)/ (volume of the solution)=

= ( mass solute/((molar mass solute)*(volume of the solution))

If m is a mass of the solute, M is a molar mass a solute, V is a volume of the solution (we can think as a volume of water added).

Molarity = m/(M*V)

8 0
3 years ago
What is the ph of a 0.010 m triethanolammonium chloride, (hoc2h2)3nhcl, solution?
azamat

The answer is 4.89


The explanation:


when the Kb of ((HOC2H2)3N) = 5.9 x 10^-7


1- we can get the value of Ka from Kb:


when Ka = Kw / Kb


= 1 x 10^-14 / 5.9 x 10^-7


= 1.69 x 10^-8


2- now we will calculate the [H+] value:


when [H+] = √(Ka*[HA])


=√((1.69E-8)(0.010))


= 1.3 x 10^-5 M


3- the final step we will calculate the PH value from the value of [H+]:


PH = - ㏒ [H+]


= - ㏒ 1.3 x 10^-5


= 4.89

8 0
4 years ago
What is the expected boiling point of a solution of 128 g KCl (a strong electrolyte) dissolved
Varvara68 [4.7K]

Answer:

tbh i dot know but i think its 6+3=5

Explanation:

idk

4 0
3 years ago
What are chemical properties of ionic compounds
ICE Princess25 [194]

Answer:

They form crystals, they have really high boiling points,  They have higher  enthalpies  of fusion  and vaporize than an molecular compound, the are brittle

Explanation:

if you need any more help let me know, Im mia :)

3 0
3 years ago
Two scientists said to report unusual findings when they shared their results from a recent science experiment. Why is this not
Reptile [31]
B is the answer because it makes the most sense.
6 0
3 years ago
Read 2 more answers
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