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spin [16.1K]
3 years ago
9

What is the Molar Mass of Iron(Fe)? and also state how many particles there are in one mole of iron.

Chemistry
1 answer:
Lunna [17]3 years ago
4 0
The atomic mass is useful in chemistry when it is paired with the mole concept: the atomic mass of an element, measured in amu, is the same as the mass in grams of one mole of an element. since the atomic mass of iron is 55.847 amu, one mole of iron atoms would weigh 55.847 grams.
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6 0
3 years ago
A jogger runs a mile in 8.92 minutes. 1 mi=1609m; calculate her speed in km/hr
olchik [2.2K]

Answer:

Speed = 3.30 \frac{km}{hr}

Explanation:

Given

Distance = 1 mile

Time = 8.92 minutes

Required

Calculate Speed in km/hr

Speed is calculated as thus;

Speed = \frac{Distance}{Time}

Substitute 1 mile for distance and 8.92 minutes for time

Speed = \frac{1\ mile}{8.92\ minutes}

Convert Miles to Kilometres

If

1\ mile = 1609\ m;

Then

1\ mile = \frac{1609\ km}{1000}

1\ mile = 1.609\ km --- (1)

Convert minutes to hour

1\ minutes = 0.0167\ hour

Multiply both sides by 8.92

8.92 * 1\ minutes = 0.0167\ hour * 8.92

8.92 \ minutes = 0.148964\ hour ---- (2)

By substituting (1) and (2) in Speed = \frac{1\ mile}{8.92\ minutes}, we have

Speed = \frac{1.609\ km}{0.48694\ hour}

Speed = 3.304309 \frac{km}{hr}

Speed = 3.30 \frac{km}{hr} -- Approximated

6 0
4 years ago
Which human activity would most likely decrease the amount of carbon in the atmosphere?
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Please note that it is useful to add the options provided with the question, in order to get a most accurate answer and have your question answered quicker.

Hope this helps!!
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Answer:

Explanation:

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lara31 [8.8K]
The answer is an atom
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3 years ago
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