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OlgaM077 [116]
3 years ago
12

What is the mass of one iron atom in grams?

Chemistry
2 answers:
vampirchik [111]3 years ago
7 0
55.8 grams Would be the answer
xeze [42]3 years ago
5 0
We know, Number of Protons = 26
Number of Neutrons (Average) = around 29

In grams, it's precise value is known as 55.85 grams

Hope this helps!
You might be interested in
Suppose you plant a seed and observe that a tree of large mass grows from it. The tree achieves a final mass that changes very l
Marta_Voda [28]
<span>Suppose you plant a seed and observe that a tree of large mass grows from it. The tree achieves a final mass that changes very little for years afterward.<span>

</span>Answer: Of the options presented above the one that is true about the tree is answer choice B) Both anabolic and catabolic reactions took place in the seed and tree when it was young and growing, and both continue now even though the tree reached a stable mass.

I hope it helps, Regards.</span>
5 0
3 years ago
Read 2 more answers
The same heat transfer into identical masses of different substances produces different temperature changes. Calculate the final
myrzilka [38]

Answer: final temperatures will be

a) water 21 C

b) concrete  20.005 C

c) steel   20.008 C

d) mercury  53 C

Explanation:

Change in temp dT = dH / (mass x specific heat)

Specific heat of these materials can be found from many sources:

water = 1 kcal / kg C

concrete = 210 kcal / kg C

steel = 114 kcal / kg C

mercury = 0.03 kcal /kg C

So dT (water) from 1 kcal heat into 1 kg water = 1 kcal / (1 kg x 1 kcal/kg C) = 1 C therefore the final temperature is 20 + 1 = 21 C

But dT (steel) = 1 kcal / (1kg x 114 kcal/kg C) = 0.008 C so the final temperature is 20 + 0.008 = 20.008 C

The results for concrete and mercury are calculated in the same way

7 0
3 years ago
What happens when light waves pass between two materials of different densities?
Musya8 [376]

Answer:

The light bends

Explanation:

When it passes through two different densities it changes directions, causing a bend

5 0
2 years ago
Read 2 more answers
Need help please help
zimovet [89]

Explanation:

a)phenotype= 100% big

b) genotype=1:2:1 (FF-25%, Ff-50%, ff-25%)

phenotype=3:1 (big=75%, small= 25%)

7 0
3 years ago
(5points) Na2[Fe(OH2)2(OH)I3]absorbs photons with energy of 191kJ/mol. Calculate the wavelength (in nm) for a photon absorbed by
AfilCa [17]

Answer:

626.7nm

Explanation:

The energy of a photon is defined as:

E = hc / λ

<em>Where E is the energy of the photon, h is Planck constant (6.626x10⁻³⁴Js), c is speed of light (3x10⁸m/s) and </em>λ is the wavelength of light

The energy of 1 photon is:

(191000 J / mol) ₓ (1 mole / 6.022x10²³) = 3.1717x10⁻¹⁹ J

Replacing:

3.1717x10⁻¹⁹ J = <em>6.626x10⁻³⁴Jsₓ3x10⁸m/s /  </em>λ

λ = 6.267x10⁻⁷m

as 1nm = 1x10⁻⁹m:

6.267x10⁻⁷m ₓ (1nm / 1x10⁻⁹m) =

<h3>626.7nm</h3>
6 0
3 years ago
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