Question

which of the following tools is a round bottom piece of glassware which is more narrow at the top than bottom and often used when heating substances? my water bottle erlenmeyer flask beaker graduated cylinder how many microliters (ul) are in 5 milliliters (ml)? 50 5000 0.5 0.005

Explanation:

Step1: Identify the glass - ware

An Erlenmeyer flask is a round - bottomed piece of glassware that is narrower at the top than at the bottom and is often used for heating substances. A water bottle is not a laboratory glass - ware for heating substances. A beaker has a flat bottom. A graduated cylinder is mainly for measuring volumes and not for heating and has a cylindrical shape.

Step2: Convert volume units

We know that 1 milliliter (mL) = 1000 microliters (μL). To find out how many microliters are in 5 milliliters, we use the conversion formula: $V_{\mu L}=V_{mL}\times1000$. Substituting $V_{mL} = 5$ into the formula, we get $V_{\mu L}=5\times1000 = 5000$ μL.

Answer:

1. B. Erlenmeyer Flask
2. B. 5000