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Alekssandra [29.7K]
2 years ago
6

Please help me i need this asp

Chemistry
1 answer:
lukranit [14]2 years ago
4 0

Answer:

B is the answer

Explanation:

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A chemist prepares a solution of mercury(II) iodide HgI2 by measuring out 0.0067μmol of mercury(II) iodide into a 350.mL volumet
yaroslaw [1]

Answer:

\large\boxed{0.019\, \mu \text{mol/L}}

Explanation:

\text{Concentration } = \dfrac{\text{moles}}{\text{litres}}\\\\\text{c} = \dfrac{n}{V}

1. Convert millilitres to litres  

\text{V = 350. mL} \times \dfrac{\text{1 L}}{\text{1000 mL}} = \text{0.3500 L}

2. Calculate the concentration

c = \dfrac{0.0067\, \mu\text{mol}}{\text{0.3500 L}} = \mathbf{0.019 \,  \mu}\textbf{mol/L}\\\\\text{The concentration of mercury(II) iodide is $\large\boxed{\mathbf{0.019\, \mu} \textbf{mol/L}}$}.

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Explain the following observation: Wet clothing spread out on a clothes line dries more quickly than wet clothing left in a pile
VashaNatasha [74]

The reason wet clothes spread out dry faster than when left in a pile is because there is more surface area therefore the rate of evaporation increases and this decreases the time it takes for the water molecules to diffuse into the air.

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4 years ago
What are complementary bases?
Radda [10]

Answer:

Two Sections that contain nitrogen of a nucleotide that bond together to connect strands of DNA or RNA.

Explanation:

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State the general relationship between temperature of the water and the amount of the salt that will dissolve in the water
kenny6666 [7]

Generally for simpler salts like sodium chloride, when the salts gets dissolved in water the temperature slightly decreases. But for salts which comes in the form of pellets which are more exothermic increases the temperature of water. The increase or decrease in the temperature depends upon the type of salt that is dissolved in the water.

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Calculate the molarity of a solution of sodium hydroxide if it contains 0.5 moles in 75ml of solution.
tatuchka [14]
Molarity = moles of solute/volume of solution (L)

0.5 moles/0.075 L = 6.67 M
3 0
4 years ago
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