Ask question

Ask question

All categories

3 years ago

15

Consider a bathtub filled with water, with a plug in the drain. How long would this be considered a closed system?

2 answers:

Monica [59]3 years ago

8 0

For a closed system, you need two things:
1) a conservation of mass within the boundaries of the system
2) the ability to freely exchange energy to & from the "closed" system with a surrounding external system

So, the answer is <u><em>never</em></u>, since your defining the "system" as the water within the bathtub, and an open bathtub is exposed to evaporation, which is not conserving mass within the defined "system".

bulgar [2K]3 years ago

7 0

Answer:

The answer is a few seconds

Explanation:

You might be interested in

Which organism is a tertiary consumer?<br> clownfish<br> brittle star<br> killer whale<br> octopus

vlada-n [284]

Answer:

killer whale

Explanation:

7 0

3 years ago

Read 2 more answers

What are 2 examples of stress the science meaning

Gelneren [198K]

1.An emotional strain and 2. a reaction to a complex emotional state.

4 0

3 years ago

The first excited vibrational energy level of diatomic chlo- rine (Cl2) is 558 cm^-1 above the ground state. Wave- numbers, the

Usimov [2.4K]

Answer:

The answer is "0.0000190 and 2.7 J".

Explanation:

$\to P_4=\frac{e^{-\beta}(4+\frac{1}{2}) hev}{2vb}\\\\$

$=\frac{e^{-9(1.35)}}{0.278v}\\\\=\frac{e^{-12.5}}{0.278}\\\\=\frac{0.000005285}{0.278}\\\\=0.0000190$

Given:

$h=6.626 \times 10^{-34}\\\\c=3\times 10^{10}\\\\v=558\ cm^{-1}\\\\K=1.38 \times 10^{-23}\\\\ T=298\\\\$

$E=\frac{hcv}{KT}\\\\$

by putting the value into the above formula so, the value is 2.7 J

6 0

3 years ago

In your own words, describe chromosomes, genes, and DNA.

FinnZ [79.3K]

A gene is the basic unit of heredity, DNA a self replicating material and chromosome a structure of nucleic acids and protein.

4 0

3 years ago

A scientist dissolves 10 g of NaOH into 0.275 L of water. What is the

Damm [24]

The answer is 0.9091 M

5 0

3 years ago