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Contact [7]
3 years ago
13

Compounds pure substances made of two or more types of _____ and are _____ _______

Chemistry
1 answer:
melomori [17]3 years ago
4 0

Answer: chemical substance

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
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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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3 years ago
Andrew plays trumpet in the concert band. He holds the trumpet still at his side until it is time for him to play. When it is ti
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Answer:

Explanation:

The first law is An object won't move by itself, and once in motion, it won't stop unless some force acts upon it. With this being said when the trumpet is at his side and he is not holding it will not move not until he lets go of it.

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I need help with empirical formula calculations
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While hiking in Costa Rica, Bert discovers a new species of arthropod. Which characteristics should he look at to determine in w
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Characteristics outlined below

Explanation:

Anthropods, though they generally possess exoskeleton, segmented bodies and joint appendages, are divided into four (4) groups:

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