If a 10,000 gallon swimming pool requires 4 ounces of a chemical, then

If 2.5 mol of dust particles were laid end to end along the equator, how many times would they encircle the planet? The circumfe

Natalka [10]

Answer:

They encircle the planet $3.76\times 10^{11}$ times.

Step-by-step explanation:

Consider the provided information.

We have 2.5 mole of dust particles and the Avogadro's number is $6.022\times 10^{23}$

Thus, the number of dust particles is:

$2.5\times 6.022\times 10^{23}=15.055\times 10^{23}$

Diameter of a dust particles is 10μm and the circumference of earth is 40,076 km.

Convert the measurement in meters.

Diameter: $10\mu m\times \frac{10^{-6}m}{\mu m} =10^{-5}m$

If we line up the particles the distance they could cover is:

$15.055\times 10^{23}\times 10^{-5}=15.055\times 10^{18}=1.5055\times 10^{19}$

Circumference in meters:

$40,076km\times \frac{1000m}{1km}=40,076,000 m$

Therefore,

$\frac{1.5055\times 10^{19}}{40,076,000} = 3.76\times 10^{11}$

Hence, they encircle the planet $3.76\times 10^{11}$ times.

8 0

3 years ago

What is the best deal on flour .a .b .c .d

swat32

Answer:

2.5 is the best deal

Step-by-step explanation:

hope this helps

8 0

2 years ago

Read 2 more answers

There are 4 red marbles, 2 white marbles, and 2 black marbles in a bag. Consider the following compound events. What is the prob

sleet_krkn [62]

Answer:

8

Step-by-step explanation:

eight more anakd;odslakhas sfjjjsjas

6 0

2 years ago

You are asked to draw a triangle with side lengths of 6 inches and 8 inches. What is the longest whole number length that your t

PolarNik [594]

Answer:

14 inches

Step-by-step explanation:

Imagine that you can lay the 6 in and 8 in sides in almost a straight line. The third side would thus have to be approx 6 in plus 8 in, or 14 in.

8 0

3 years ago

Read 2 more answers

I need help to this question:Country Carpets charges $22 per square yard for carpeting, and an additional installation fee of $1

Iteru [2.4K]

Answer:

The total cost charged by the two companies will be the same for 10 square yards of carpeting .

Step-by-step explanation:

Let us assume that the number of square yards for carpeting used be x.

Let us assume that the total cost of the charged by the companies be y.

As given

Country Carpets charges $22 per square yard for carpeting, and an additional installation fee of $100.

Than the equation becomes

y = 22x + 100

As given

City Carpets charges $25 per square yard for the same carpeting, and an additional installation fee of $70.

Than the equation becomes

y = 25x + 70

Than the two equations are

y = 22x + 100 and y = 25x + 70

Than compare the two equations are

22x + 100 = 25x + 70

25x - 22x = 100 - 70

3x = 30

$x = \frac{30}{3}$

x = 10 square yards .

Therefore the total cost charged by the two companies will be the same for 10 square yards of carpeting .

3 0

3 years ago