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PolarNik [594]
3 years ago
6

Calculate the number of milligrams to 0.425 kg

Chemistry
1 answer:
sp2606 [1]3 years ago
4 0

Answer:

Explanation:

as we know that 1kg =1,000,000 mg

therefore

0.425 kg= 0.425*1,000,000/1=425000

result:

0.425 kg contain 425000 mg

i hope this will help you

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a pure substance consists only of one element or one compound. a mixture consists of two or more different substances, not chemically joined together.

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Glyceraldehyde-3-phosphate is an important intermediate molecule in the cell's metabolic pathways because __________.
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Answer:

Present in both catabolic and anabolic pathways

Explanation:

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3 years ago
What percentage of the heat lost by the hot object(s) was gained by the water? Explain at least three factors that might have ca
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6 0
3 years ago
You wish to prepare an HC2H3O2 buffer with a pH of 4.24. If the pKa of is 4.74, what ratio of C2H3O2 /HC2H3O2 must you use?
LenaWriter [7]

To solve this problem, we can use the Henderson-Hasselbalch Equation which relates the pH to the measure of acidity pKa. The equation is given as:<span>

<span>pH = pKa + log ([base]/[acid])                ---> 1</span></span>

Where,

[base] = concentration of C2H3O2 in molarity or moles

<span>[acid] = concentration of  HC2H3O2 in molarity or moles</span>

 

For the sake of easy calculation, let us assume that:

[base] = 1

[acid] = x

<span>
Therefore using equation 1,
4.24 = 4.74 + log (1 / x) 

<span>log (1 / x) = - 0.5

1 / x = 0.6065 </span></span>

x = 1.65<span>

The required ratio of C2H3O2 /HC2H3O2 <span>is 1:1.65 or 3:5. </span></span>
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3 years ago
Which compound is composed of oppositely charged ions? A. OCl2 B. Na2O C. NH3 D. SCl2
vazorg [7]
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Read 2 more answers
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