All categories

3 years ago

It is obvious that the large stalactites in an underground cavern must have required long ages to form. True False

Chemistry

1 answer:

aivan3 [116]3 years ago

6 0

True, it is formed from immense weathering over time. Hope it helped!

You might be interested in

The North Star is the last star in the Ursa Minor constellation. True False

Alja [10]

The answer is true. It is the last star.

4 0

3 years ago

What is the mean free path for the molecules in an ideal gas when the pressure is 100 kPa and the temperature is 300 K given tha

sladkih [1.3K]

Answer:

The mean free path = 2.16*10^-6 m

Explanation:

Given:

Pressure of gas P = 100 kPa

Temperature T = 300 K

collision cross section, σ = 2.0*10^-20 m2

Boltzmann constant, k = 1.38*10^-23 J/K

To determine:

The mean free path, λ

Calculation:

The mean free path is related to the collision cross section by the following equation:

$\lambda =\frac{1}{n\sigma }------(1)$

where n = number density

$n = \frac{P}{kT}-----(2)$

Substituting for P, k and T in equation (2) gives:

$n = \frac{100,000 Pa}{1.38*10^{-23} J/K*300K} =2.42*10^{25}\ m^{3}$

Next, substituting for n and σ in equation (1) gives:

$\lambda =\frac{1}{2.42*10^{25}m^{-3}* .0*10^{-20}m^{2}}=2.1*10^{-6}m$

6 0

3 years ago

515282 quarts into milliliters. I

Minchanka [31]

Answer:

487638640,7819

dndndnndndbxbdbdbdbdb

6 0

3 years ago

Please answer! I will mark you as brainlist!

blagie [28]

Answer:

a) no

b) no

c) yes

d) yes

Explanation:

7 0

2 years ago

In science, a summary of observed behavior is referred to as a(n)

umka2103 [35]

Answer:

Law

Explanation:

A law is a summary of observed (measurable) behavior, whereas a theory is an explanation of behavior. A law tells what happens; a theory (model) is our attempt to explain why it happens.

5 0

3 years ago