Ask question

Ask question

All categories

4 years ago

9

Which of the following systems reflects a decrease in entropy? A. burning match B. freezing water C. evaporating alcohol D. brea

king glass **Thank you!!

2 answers:

Bad White [126]4 years ago

7 0

It would be B) freezing water because this change gets less chaotic

torisob [31]4 years ago

4 0

The answer is B. because introducing heat to something (A and C) increases entropy, and so does breaking something (D)

You might be interested in

In a game of tug of war, a rope is pulled by a force of 182 N to the right and by a force of 108 N to the left. Calculate the ma

Mrac [35]

Answer:

74 N to the right

Explanation:

the forces are going in opposite horizontal directions, meaning that they are directly opposing each other. this means that you can subtract the force applied in the direction that is greater from the direction that is less to get the net force for the greater direction

this means 182 N - 108 N = 74 N to the right

6 0

3 years ago

Savannah drove 716 miles on Monday. She drove another 572 miles on Tuesday. About how many miles did she drive

Korolek [52]

Explanation:

We have,

Savannah drove 716 miles on Monday and She drove another 572 miles on Tuesday.

It is required to find the total distance covered by her altogether. It is equal to the sum of distance covered on Monday and distance covered on Tuesday. So,

d = 716 miles + 572 miles

d = 1288 miles

So, she drive 1288 miles altogether.

5 0

4 years ago

Find the odd one out radish,potato, beet,carrot.

romanna [79]

Answer:

Potato is not a root whereas the rest of the four items are forms of root.

Potato is a stem.

So, option B is the odd one out

4 0

3 years ago

Which statement describes why scientific notation is useful? It makes very small numbers into whole numbers. It converts fractio

disa [49]

It makes calculations with very large and small numbers easier.

Scientific notation is a system used in order to It makes calculations with very large and small numbers easier. It is useful as it allows very large number that would take a lot of space to write otherwise, and it allows them to be calculated easier. $10^{23}$ for example is a incredible large number, but written in this form is immediately understandable and useful for calculation.

3 0

4 years ago

Read 2 more answers

What is the velocity of an electron that has a de Broglie wavelength approximately the length of a chemical bond? Assume this le

melomori [17]

Answer : The velocity of an electron is, $6.1\times 10^{6}m/s$

Explanation :

According to de-Broglie, the expression for wavelength is,

$\lambda=\frac{h}{p}$

and,

$p=mv$

where,

p = momentum, m = mass, v = velocity

So, the formula will be:

$\lambda=\frac{h}{mv}$ .............(1)

where,

h = Planck's constant = $6.626\times 10^{-34}Js$

$\lambda$ = wavelength = $1.2\times 10^{-10}m$

m = mass of electron = $9.11\times 10^{-31}kg$

v = velocity of electron = ?

Now put all the given values in formula 1, we get:

$1.2\times 10^{-10}m=\frac{6.626\times 10^{-34}Js}{(9.11\times 10^{-31}kg)\times v}$

$v=6.1\times 10^{6}m/s$

Thus, the velocity of an electron is, $6.1\times 10^{6}m/s$

6 0

4 years ago