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3 years ago

What is true of the waste generated by nuclear power?

2 answers:

7 0

The correct answer is D) remains hazardous for a long time. Nuclear waste stays radioactive for many centuries.

This is generally buried underground, so it does not cause significant air pollution, greenhouse effect, or acid rain. These three are mostly caused by particulate matter or greenhouse gases that are emitted into the atmosphere

dimaraw [331]3 years ago

7 0

The statement which is true about the waste generated by nuclear power is that it D) remains hazardous for a long time. Nuclear waste stays radioactive for many centuries. This is because this nuclear energy is hard to get rid because of its energy which is greater than the others.

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At what temperature is the following reaction at equilibrium? 2Na, O, + 2H,0 + 4NaOH + O, AH° = -109 kJ, ASO = -133.2 J/K

natali 33 [55]

Answer:

Temperature = 818 K

Explanation:

The given reaction is:

$2Na2O2 + H2O \rightarrow 4NaOH + O2$

The change in enthalpy is: ΔH°= -109 kJ

The change in entropy is : ΔS° = -133.2 J/k = -0.1332 kJ/K

Based on the Gibbs-Helmholtz equation the standard free energy change is given as:

$\Delta G^{0}=\Delta H^{0}-T\Delta S^{0}$

At equilibrium ΔG° = 0. therefore:

$\Delta H^{0} = T\Delta S^{0}$

$T=\frac{\Delta H^{0}}{\Delta S^{0}}=\frac{-109}{-0.1332}=818 K$

4 0

3 years ago

3Ba+Al2(SO4)3 -->2Al+3BaSO4,

daser333 [38]

Answer:

13.5 * 10^-2 g

Explanation:

What we know:

Balanced Equation: 3Ba+Al2(SO4)3 -->2Al+3BaSO4,

Grams of Ba: 1

Grams of Al2(SO4)3: 1.8g

Calculate the # of moles of Ba and Al2(SO4)3:

1g Ba/137.3 = 7.3 *10^-3 mol Ba

1.8g Al2(SO4)3/ 342 = 5.3 *10^-3 mol Al2(SO4)3

Find the limiting reactant:

Ba has a coefficient of 3 in the balanced equation, so we divide the # of moles of Ba by 3 to get... 7.3 *10^-3 mol Ba/3 = 2.43 *10^-3

Al2(SO4)3 has a coefficient of 1, so if we divide by 1, we get the same number of 5.3 *10^-3

2.43 *10^-3 is smaller than 5.3 *10^-3, therefore Ba is the limiting reactant.

finally, we just find the number of moles of Al

The ratio of Al to Ba is 2:3 so...

7.3 * 10^-3 * (2/3) = 5 *10^-3 mol Al

CONVERT TO GRAMS

5 *10^-3 mol Al * 27 = 13.5 * 10^-2 g

Hope that was helpful!

6 0

2 years ago

One mole of Ca is equal to how many atoms

Irina18 [472]

Answer:

1 mole of calcium contains 6.023 $\times$ $10^{23}$ atoms.

Explanation:

1 mole is the amount of a substance that contains exactly $6.023\times 10^{23}$ constituent particles. 1 mole of a substance is always equal to the atomic mass of the element.