What Mass of Borax [Na₂B₄O₇(H₂O)₁₀] Could Be Prepared from 25

question 97

Multiple Choice

What mass of borax [Na₂B₄O₇(H₂O) ₁₀] could be prepared from 25 kg of colemanite ore [Ca₂B₆O₁₁(H₂O) ₅] by a process that is 95% efficient,assuming that no other boron-containing product is formed?

• A)47 kg
• B)42 kg
• C)33 kg
• D)31 kg
• E)20 kg

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Definitions:

Vasa Recta

A series of straight capillaries in the kidney that serve as an extension of the loop of Henle, playing a critical role in the concentration of urine.

Nephron Loop

A U-shaped tube in the nephron of the kidney that plays a crucial role in concentrating urine and conserving water.

Proximal Tubule

A major part of the nephron in the kidney, involved in the reabsorption of water, ions, and nutrients from the filtrate and their return to the bloodstream.

Urinalysis Test Strip

A diagnostic tool used to detect and measure various compounds in urine, such as glucose or proteins.