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Paraphin [41]
2 years ago
11

Nuclear Chemistry Writing Assignment

Chemistry
2 answers:
pogonyaev2 years ago
6 0

Answer:

21 years

% of parent isotope remaining before safe

6.25%

Explanation:

Ghella [55]2 years ago
6 0
Whatttttt????????????
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How do chemists express the rates of chemical reactions
Inessa [10]

Answer:

They expressed it as rate of change in concentration of reactants or products in a chemical reaction

6 0
3 years ago
Read 2 more answers
The equilibrium constant for the chemical equation is Kp = 5.23 at 191 °C. Calculate the value of the Kc for the reaction at 191
Lapatulllka [165]
To convert from Kp to Kc, you need this formula---> Kp= Kc (RT)^Δn, where Δn= gas moles of product- gas moles of reactants. since you did not give a reaction formula, I can't calculate Δn. but all once you find it out. just plug it. 

Kp= Kc (RT)^Δn------------------> Kc= Kp/[(RT)^Δn]
 Kp= 5.23
R= 0.0821
T= 191 C= 464 K
Δn= ?

Kc= 5.23/ (0.0821 x 464)^Δn= ???

7 0
3 years ago
Help me clarify please!
zaharov [31]

Answer:

Round to the number of significant figures in the original question. However, if you're going to proceed with further calculations using this mass, it's best not to round, as rounding will cause your answer to be less precise.

Explanation:

7 0
2 years ago
The
Vikki [24]

2nd

Explanation:

because i guesses i guess so yeah trust your gut buddy

5 0
2 years ago
A photon of green light strikes an unknown metal and an electron is emitted. The voltage is set to 2 volts. The electron cannot
SVETLANKA909090 [29]

Answer:

The correct answer is:

An electron will be emitted in the second experiment, but it cannot be determined whether it will reach the second plate.

Explanation:

In fact, violet has higher frequency than green light. This means that photons on violet carry more energy than photons of green light (remember that the energy of a photon is proportional to it's frequency:

e = hf

, so when they hit the surface of the metal, more energy is transferred to the electrons. The electron was already emitted with green light, so it must be emitted with also violet light, given the more energy transferred.

7 0
2 years ago
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