what is 400 mL converted to grams?
The Correct Answer and Explanation is:
Answer:
To convert 400 mL to grams, you need to know the density of the substance you’re converting.
- If the substance is water (or any liquid with the same density as water), the conversion is straightforward: 400 mL=400 g400 \, \text{mL} = 400 \, \text{g}
This is because the density of water is approximately 1 gram per milliliter (1 g/mL) at standard temperature and pressure.
Explanation
The conversion of milliliters (mL) to grams (g) involves a key physical property known as density, which is defined as mass per unit volume. The standard formula to convert volume to mass is: Mass (g)=Volume (mL)×Density (g/mL)\text{Mass (g)} = \text{Volume (mL)} \times \text{Density (g/mL)}
So, if we’re working with water, which has a density of 1 g/mL, the math becomes simple: Mass=400 mL×1 g/mL=400 g\text{Mass} = 400 \, \text{mL} \times 1 \, \text{g/mL} = 400 \, \text{g}
However, not all substances have the same density. For example:
- Milk has a density of about 1.03 g/mL, so 400 mL of milk would weigh approximately 412 g.
- Olive oil has a density around 0.92 g/mL, so 400 mL would be about 368 g.
- Mercury has a density of 13.6 g/mL, so 400 mL of mercury would weigh a massive 5,440 g.
Thus, converting from mL to g is not always a one-to-one process. It’s only accurate without additional calculation if the substance has a density of 1 g/mL (like water). In most scientific or culinary contexts, it’s essential to account for density to ensure accuracy. Misconverting units could lead to incorrect dosing in medicine, failed experiments in chemistry, or poorly prepared recipes in cooking.
Always check the density of the substance before converting, unless you’re sure it’s water or something with very similar properties.
