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Rudik [331]
3 years ago
11

In a nuclear reaction, the energy released is equal to 5.4 x 1015 joules. Calculate the mass lost in this reaction. (1 J = 1 kg

m2/s2)
6.0 x 10-2 kg
4.86 x 10-1 kg
1.8 x 10-1 kg
1.62 x 102 kg
Chemistry
2 answers:
Alexeev081 [22]3 years ago
3 0
I think the answer is A.
FinnZ [79.3K]3 years ago
3 0

Answer:

A) 6 *10^-2 kg

Explanation:

From Einstein equation of mass and energy inter conversion,

E = MC²

E = Energy released = 5.4 * 10¹⁵ J

M = mass = ?

C = spend of light = 3.0*10⁸m / s

E = mc²

M = E / c²

M = 5.4 * 10¹⁵ / (3.0 * 10⁸)²

M = 0.06kg = 6 * 10^-2 kg

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Express each of the following answers in the IUPAC format. Do not include any capitals or spaces in your name. Separate multiple
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The full question is shown in the image attached

Answer:

See explanation

Explanation:

In naming an alkane, the first thing we do is to obtain the parent chain by counting the number of carbon atoms in the chain.

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Alkaline batteries are non-rechargeable.<br> Why do alkaline batteries eventually stop working?
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Explanation: Hope it helps you :)))

Have a good day

4 0
2 years ago
Fe2O3 + CO --&gt; Fe + CO2
satela [25.4K]

Answer:

The answer to your question is

1.-Fe₂O₃

2.- 280 g

3.- 330 g

Explanation:

Data

mass of CO = 224 g

mass of Fe₂O₃ = 400 g

mass of Fe = ?

mass of CO₂

Balanced chemical reaction

                       Fe₂O₃   + 3CO    ⇒  2Fe  +   3CO₂

1.- Calculate the molar mass of Fe₂O₃ and CO

Fe₂O₃ = (56 x 2) + (16 x 3) = 160 g

CO = 12 + 16 = 28 g

2.- Calculate the proportions

theoretical proportion Fe₂O₃ /3CO = 160/84 = 1.90

experimental proportion Fe₂O₃ / CO = 400/224 = 1.78

As the experimental proportion is lower than the theoretical, we conclude that the Fe₂O₃ is the limiting reactant.

3.-     160 g of Fe₂O₃  --------------- 2(56) g of Fe

         400 g of Fe₂O₃ ---------------  x

         x = (400 x 112) / 160

        x = 280 g of Fe

4.-      160 g of Fe₂O₃  --------------- 3(44) g of CO₂

          400 g of Fe₂O₃  --------------  x

          x = (400 x 132)/160

         x = 330 gr

3 0
3 years ago
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