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Ilya [14]
2 years ago
13

Someone help me please i’ll give brainly

Chemistry
1 answer:
quester [9]2 years ago
4 0

Answer:

b

Explanation:

i looked it up on Google

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Which organism is most likely 10 centimeters in size?
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Explanation:

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3 years ago
How many atoms are in .800 g of Ca
Goshia [24]
The answer for this question is 0.8
8 0
3 years ago
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A particular radioactive nuclide has a half-life of 1000 years. What percentage of an initial population of this nuclide has dec
Delicious77 [7]

Answer:

91.16% has decayed & 8.84% remains

Explanation:

A = A₀e⁻ᵏᵗ => ln(A/A₀) = ln(e⁻ᵏᵗ) => lnA - lnA₀ = -kt => lnA = lnA₀ - kt

Rate Constant (k) = 0.693/half-life = 0.693/10³yrs = 6.93 x 10ˉ⁴yrsˉ¹

Time (t) = 1000yrs  

A = fraction of nuclide remaining after 1000yrs

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Amount of nuclide decayed = 1 – 0.0884 = 0.9116 or 91.16% has decayed.

3 0
3 years ago
How many atoms are in a sample of 1.83 moles of potassium (K) atoms? Please explain the conversions to me. Thank you!
IRINA_888 [86]
1 mole K ------------- 6.02x10²³ atoms
1.83 moles K ------ ?? atoms

1.83 x (6.02x10²³) / 1 =

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hope this helps!
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it looks like..
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