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3 years ago

The Average Speed of the orbiting space shuttle is

Chemistry

1 answer:

maxonik [38]3 years ago

8 0

Explanation:

It is given that, the Average Speed of the orbiting space shuttle is 17500 miles/hour.

We need to convert the speed in kilometers/ second

We know that,

1 mile = 1.609 km

1 km = 0.621 miles

1 hour = 3600 seconds

$17500\ \dfrac{\text{miles}}{\text{hour}}=17500\ \dfrac{\text{miles}}{\text{h}}\times \dfrac{1\ h}{3600\ s}\\\\=17500\times \dfrac{\text{miles}}{3600\ s}$

Now cancel the miles in numerator.

$17500\times \dfrac{\text{miles}}{3600\ s}=17500\times \dfrac{\text{miles}}{3600\ s}\times \dfrac{1.609\ km}{1\ \text{miles}}\\\\=17500\times \dfrac{1.609}{3600}\ km/s\\\\=7.82\ km/s$

So, 17500 miles/hour is equal to 7.82 km/s.

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2. A. 8.46%

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To formulate the empirical formula, we need to follow some steps:

Step 1: Converting the given masses into moles.

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For the mole ratio, we divide each value of the moles by the smallest number of moles calculated which is 5.8 moles.

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Step 3: Taking the mole ratio as their subscripts.

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