3 years ago

What is potential energy

1 answer:

7 0

Answer:

the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors.

Explanation:

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Uranium-232 has a half-life of 68.8 years. After 344.0 years, how much uranium-232 will remain from a 100.0-g sample?

amm1812

Answer: 3.13 g

Explanation:

Radioactive decay follows first order kinetics.

Half-life of uranium-232 = 68.8 years

$\lambda =\frac{0.693}{t_{\frac{1}{2}}}=\frac{0.693}{68.8}= 0.010072674 year^{-1}$

$N=N_o\times e^{-\lambda t}$

N = amount left after time t

$N_0$ = initial amount

$\lambda$ = rate constant

t= time

$N_0$ = 100 g, t= 344 years, $\lambda=0.010072674 years^{-1}$

$N=100\times e^{- 0.010072674 years^{-1}\times 344 years}$

N=3.13g

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3 years ago

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What is the ratio of ions needed to produce neutral potassium chloride?

BlackZzzverrR [31]

Answer:

Explanation:

Why not

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A solution in which 50 grams of solute is dissolved in 250 grams of solution has a concentration of blank percent.

Stella [2.4K]

Answer:

20%

Explanation:

w=(solute)/(solution)

w = 50g/250g = 0.2

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4 years ago

If 3 g of element C combine with 8 g of element D to form compound CD, how many grams of D are needed to form compound CD2?

bija089 [108]

<span>For the answer to the question above,
If 3g of element combines with 8g of D to form CD it means
1 mole of C = 3g
1 mole of D = 8g
hence it forms CD.
So to form CD2 you need 16g of element D
I hope my answer helped you</span>

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3 years ago

The Periodic Table is organized into or by _________________. A. All of these B. Groups C. Increasing atomic number D. Propertie

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Answer:

My best bet is to go with A. All of these

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3 years ago