Ask question

Ask question

All categories

Ilia_Sergeevich [38]

3 years ago

14

A marathon is a race that commemorates the run made by a Greek soldier, Pheidippides, that took place in August 490 BC. The sold

ier ran 26.2 mi. How many kilometers did he run?

2 answers:

Vlad1618 [11]3 years ago

7 0

The correct answer is 42. All marathon races in Europe are 42km long, which is 26.2 miles for those who use miles.

timofeeve [1]3 years ago

5 0

the correct answer to this problem is <u>41.9 </u> to be exact

You might be interested in

How much time would it take to distribute one avagadro's number of wheat grains if 10^10 grains are A)1.9*10^2 years B)1.9*10^10

Makovka662 [10]

Answer:

It takes 1.9 $\times 10^{6}$ years to distribute all the grains.

Explanation:

In one second, $10^{10}$ grains of wheat are distributed.

We are supposed to find the time it would take to Distribute Avogadro number of grains.

1 avogadro number = 6.022 $\times 10^{23}$

Number of grains distributed in 1 day = 86400 $\times 10^{10}$

= 8.64 $\times 10^{14}$

Number of grains distributed in 1 year= 8.64 $\times 10^{14} \times 365$

= 3.1536 $\times 10^{17}$

Time taken = $\frac{Number of grains to be distributed}{grains distributed in 1 year}$

= $\frac {6.022 \times 10^{23}}{3.1536\times 10^{17}}$

= 1.9 $\times 10^{6}$

7 0

3 years ago

Help!! <br> What is the concentration of an unknown with an absorbance of 0.4 using the plot?

sveta [45]

Answer:3,4,1,2

Explanation:

hope this helped

6 0

2 years ago

Need help with these.

kakasveta [241]

I got you bro by the power of my heart and the felling of agony my condolences go to the Siskin of Thebes

5 0

3 years ago

Odor extensive or intensive

slava [35]

Answer:

Odour is intensive

Explanation:

intensive properties are Independent of the amount of matter

6 0

3 years ago

The label shown above contains information about some harmful effects of acetone.A group of students plans to use acetone to rin

Fed [463]

Answer:

<u>Heating water with an open flame</u>

<u>Explanation:</u>

Remember, we are told in the label that Acetone is a "flammable liquid and vapor." <em>Being flammable means the substance can easily be set on fire</em>, and we would expect an open flame from heating water to trigger an explosion (a disaster) in which the Acetone is set on fire causing life-threatening dangers to the second group of students.

8 0

3 years ago