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4 years ago

Derek needs a tool that delivers 5.00 mL of a sodium hydroxide solution.which tool would be best for him to use

2 answers:

7 0

Because 5.00 mL is a small amount, the best tool he could use is a pipette.

Pipette or sometimes spelled as pipet can be used to transport liquid samples. It is made out of glass or plastic and can is usually used to transfer measured volumes of liquid from one container to another. Before the pipette was invented, scientists used to use straws and they would suck in the samples carefully.

natta225 [31]4 years ago

7 0

Answer:

b. pipette

Explanation:

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Answer:

9.18g

Explanation:

Step 1: Write the reduction half-reaction

Au³⁺(aq) + 3 e⁻ ⇒ Au(s)

Step 2: Calculate the mass of gold is produced when 15.0A of current are passed through a gold solution for 15.0min

We will use the following relationships:

1 min = 60 s

1 A = 1 C/s

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1 mole of Au is produced when 3 moles of electrons circulate.

The molar mass of Au is 196.97 g/mol.

The mass of gold produced is:

$15.0 min \times \frac{60s}{1 min} \times \frac{15.0C}{1s} \times \frac{1 mol e^{-} }{96486C} \times \frac{1molAu}{3 mol e^{-} } \times \frac{196.97gAu}{1molAu} = 9.18gAu$

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3 years ago

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3 years ago

What is the formula for Hydroxide

Levart [38]

Answer:

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Explanation:

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4 years ago

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