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Luden [163]
3 years ago
13

What is the proper measurement of the vol-ume represented?1. 2.0 ml 2. 2.500 ml 3. 2.5 ml 4. 2.50 ml?

Chemistry
1 answer:
wel3 years ago
3 0
From the given choices above, the volume that is well represented is the fourth choice, 2.50 mL. This is because there is enough number of significant figures after the decimal point to ensure that there is accuracy in the given values. 
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Which connects the ovary and uterus? sperm duct, fallopian tube, urethra, vagina
Jlenok [28]

Answer:

fallopian tube

Explanation:

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5 0
3 years ago
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Suppose a student started with 142.0 mg of trans-cinnamic acid, 412 mg of pyridinium tribromide, and 2.30 mL of glacial acetic a
nirvana33 [79]

Answer: Theoretical Yield = 0.2952 g

               Percentage Yield = 75.3%

Explanation:

Calculation of limiting reactant:

n-trans-cinnamic acid moles = (142mg/1000) / 148.16 = 9.584*10⁻⁴ mol

pyridium tribromide moles = (412mg/1000) / 319.82= 1.288*10⁻³ mol

  • n-trans-cinnamic acid is the limiting reactant

The molar ratio according to the equation mentioned is equals to 1:1

The brominated product moles is also = 9.584*10⁻⁴ mol

Theoretical yield = (9.584*10⁻⁴ mol) * (Mr of brominated product)

                             =  (9.584*10⁻⁴ mol) * (307.97) = 0.2952 g

Percentage Yield is : Actual Yield / Theoretical Yield = 0.2223/0.2952

                                                                                           = 75.3%

4 0
3 years ago
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Brut [27]
Yes, of course))))))
6 0
3 years ago
What is humidity? Please answer as quickly as possible.
Katen [24]
"a quantity representing the amount of water vapor in the atmosphere or a gas."
7 0
3 years ago
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What is the concentration of FeCl3 in a solution prepared by dissolving 10.0 g of FeCl3 in enough water to make 275 mL of soluti
puteri [66]

Answer: The concentartion of solution will be 0.224 M

Explanation:

Molarity : It is defined as the number of moles of solute present per liter of the solution.

Formula used :

Molarity=\frac{n\times 1000}{V_s}

where,

n= moles of solute =\frac{\text{Given mass}}{\text{Molar mass}}=\frac{10.0g}{162.2g/mol}=0.0616moles

{V_s} = volume of solution in ml = 275 ml

Now put all the given values in the formula of molarity, we get

Molarity=\frac{0.0616\times 1000}{275ml}=0.224mole/L

Therefore, the concentration of solution will be 0.224 M

7 0
3 years ago
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