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7nadin3 [17]
2 years ago
8

Justify the statement nuclear energy is harmful as well as useful

Chemistry
1 answer:
dmitriy555 [2]2 years ago
7 0

  • The beneficial effects of nuclear energy is usually overlooked because of its potentially devastating side-effects

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3. Determine the moles of sodium, Na, containing 7.9x1024 atoms.​
-BARSIC- [3]

Answer:

12.7mol Na.

Explanation:

Hello there!

In this case, according to the concept of mole, which stands for the amount of substance, we can recall the concept of Avogadro's number whereby we understand that one mole of any substance contains 6.022x10²³ particles, for the given atoms of sodium, we can calculate the moles as shown below:

7.9x10^{23}atoms*\frac{1mol}{6.022x10^{23}atoms} \\\\

Thus, by performing the division we obtain:

12.7molNa

Regards!

8 0
3 years ago
Identify the cfc with the shortest atmospheric lifetime
goldenfox [79]
CFC-11 is typically the CFC with the shortest atmospheric lifetime. 
5 0
3 years ago
At chemical equilibrium the amount of blank because
Norma-Jean [14]

Answer:

In a chemical reaction, chemical equilibrium is the state in which the forward reaction rate and the reverse reaction rate are equal. The result of this equilibrium is that the concentrations of the reactants and the products do not change.

Explanation:

5 0
3 years ago
The specific heat of zinc is 0.39 J/g*°C. How much energy needed to change the temperature of 34g of zinc from 22°C to 57°C. Is
Svetlanka [38]

Answer:

464.1 J absorbed.

Explanation:

Given data:

Specific heat of zinc =  0.39 J/g°C

Mass of zinc = 34 g

Temperature changes = 22°C to 57°C

Energy absorbed or released = ?

Solution:

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = 57°C -  22°C

ΔT = 35°C

Q = m.c. ΔT

Q = 34 g. 0.39 J/g°C. 35°C

Q = 464.1 J

6 0
3 years ago
Which corresponds to a pressure of 1.23 atm? 8.73 mmHg 9.23 mmHg 125 mmHg 935 mmHg
rosijanka [135]
(935mmHg/760mmHg)=1.23 atm
5 0
3 years ago
Read 2 more answers
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