Clinical Lab Study Guide (revamp._.)

Front

TDS+TSS (Total Solids + Total Suspended Solids) =

Back

TS (Total Solids)

Answer explanation

TDS (Total Dissolved Solids) and TSS (Total Suspended Solids) together represent all solids in a solution, which is defined as Total Solids (TS). Therefore, TDS + TSS equals TS.

Front

Convert 28 degrees Celsius into Fahrenheit

Back

82.4

Answer explanation

To convert Celsius to Fahrenheit, use the formula F = (C × 9/5) + 32. For 42°C: F = (42 × 9/5) + 32 = 107.6°F. Thus, the correct answer is 107.6.

Front

What is the most common neutral salt inside a pH probe?

Back

KCl

Answer explanation

NaCl, or sodium chloride, is the most common neutral salt used for pH measurements because it does not affect the acidity or basicity of the solution, making it ideal for calibrating pH meters.

Front

Convert 64F to C

Back

17.8

Answer explanation

To convert Fahrenheit to Celsius, use the formula C = (F - 32) × 5/9. For 64F: C = (64 - 32) × 5/9 = 17.8C. Thus, the correct answer is 17.8.

Front

Which of the following is the most accurate? Graduated Cylinder, Transfer Pippet, Volumetric Flask, Burette

Back

Burette

Answer explanation

The volumetric pipette is designed for high accuracy in measuring and transferring specific volumes of liquid, making it the best choice for making dilutions compared to beakers, graduated pipettes, or flasks.

Front

Which of the following is used for the most accurate dilutions? Volumetric Flask, Burette, Graduated Cylinder, Erlenmeyer Flask

Back

Volumetric Flask

Answer explanation

The burette is designed for precise delivery of liquid, allowing for accurate measurement of volumes, especially in titrations. In contrast, volumetric pipets, beakers, and flasks are less precise than a burette.

Front

What is measured in a viscosity test?

Back

A fluid's resistance to internal flow; Viscometer

Answer explanation

Viscosity is defined as a fluid's resistance to internal flow, which is accurately measured using a viscometer. The other options either misdefine viscosity or refer to unrelated measurements.

Front

What is the purpose of doing a volumetric dilution of a solution?

Back

To lower the concentration of an analyte so that it is in a reasonable range.

Answer explanation

The purpose of volumetric dilution is to lower the concentration of an analyte, making it more manageable for analysis and ensuring it falls within a reasonable range for accurate measurement.

Front

Which chemical reaction is this? 2KCl + MgI₂ → MgCl₂ + 2KI

Back

Double replacement

Answer explanation

This reaction involves the exchange of ions between two compounds, KCl and MgI2, resulting in the formation of MgCl2 and KI. This characteristic of exchanging partners defines it as a double replacement reaction.

Front

Place the answers in the following order: OH-1, NO-1, SO4-2, NH+1

Back

Hydroxide, Nitrite, Sulfate, Ammonium

Answer explanation

The correct choice is 'Hydroxide, Nitrite, Sulfate, Ammonium' as it matches the given ions: OH-1 (Hydroxide), NO-1 (Nitrite), SO4-2 (Sulfate), NH+1 (Ammonium).