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Andrej [43]
2 years ago
8

Please help me. It's urgent .

Chemistry
2 answers:
sesenic [268]2 years ago
8 0

Answer:

huh,wht a joke!!!!!!!!

CaHeK987 [17]2 years ago
3 0

Answer:

u also help me in my profile I don't know the answer please tell me please and I am not doing joke so u have to convert no in binary answer so tell me fast OK in comment on my question in my profile

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PLEASE HELP NAME THIS CHEMICAL AsO3
Oksi-84 [34.3K]

Answer:

I believe it is "Arsenenate"

3 0
3 years ago
(30 Points) You need to produce a buffer solution that has a pH of 5.02. You already have a solution that contains 10. mmol (mil
chubhunter [2.5K]
<span>By definition:

pH = pKa + log [acetate]/ [acetic acid]

so

5.02 = 4.74 + log [acetate] / 10 mmole

10mmole = 10/1000 = 0.01 mole

5.02 = 4.74 + log [acetate] / 0.01

5.02 - 4.74 = 0.28 = log [acetate] /0.01


10^0.28 = </span><span>1.90546</span> = [acetate] / 0.01 <span>
[acetate] = 0.019 mole 

= 19 millimoles

</span>
8 0
3 years ago
Read 2 more answers
Is water a element or compond <br> and is it a homogeneous or heterogeneous
crimeas [40]

Answer:

Water is a compound. It contains more than one element

water is homogeneous

8 0
2 years ago
Read 2 more answers
Dry air can be liquified at temperatures below 78.8K. This material is an
Vlad1618 [11]
<h2>Answer : </h2>

<h3>D. HETEROGENEOUS MIXTURE </h3>

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7 0
3 years ago
If the concentrated form of blood expander is 9.0 mol/L and one of your companions, a nurse, tells you that you need to have a f
I am Lyosha [343]

Answer:

0.032 L or 32 mL

Explanation:

Use the dilution equation M1V1 = M2V2

M1 = 9.0 M

V1 = This is what we're looking for.

M2 = 0.145 M

V2 = 2 L

Solve for V1 --> V1 = M2V2/M1

V1 = (0.145 M)(2 L) / (9.0 M) = 0.032 L

3 0
3 years ago
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