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MrRa [10]
3 years ago
9

A clear, pure liquid sample is brought into the lab and exposed to an electrical current. Different gases are

Chemistry
2 answers:
mel-nik [20]3 years ago
4 0
I think it’s a d but I’m not sure
Tresset [83]3 years ago
4 0
I think the answer is an element
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The radioactive decay of a certain sample produced 846 disintegrations per minute. exactly 3.00 days later, the rate of decay wa
Margarita [4]

Answer:

\boxed{\text{1.81 da}}

Explanation:

1. Calculate the decay constant

The integrated rate law for radioactive decay is 1

\ln\dfrac{A_{0}}{A_{t}} = kt

where

A₀ and A_t are the counts at t = 0 and t

k is the radioactive decay constant

\ln \dfrac{846}{269} = k \times 3.00\\\\\ln3.145 = 3.00k\\1.146 = 3.00k\\\\k =\dfrac{1.146}{3}\\\\k = \text{0.382 /da}\\

2. Calculate the half-life

t_{\frac{1}{2}} = \dfrac{\ln2}{k} = \dfrac{\ln2}{0.382} = \text{1.81 da}

The half-life for decay is \boxed{\textbf{1.81 da}}.

3 0
3 years ago
Write a paragraph to explain the answer to the following prompt:
Anton [14]

Answer:

hinndndnnddnndndndnd do djfj

Explanation:

hdhdjdbdndndndjjddjdndjdjdndnndndndnd be rnnrbr

7 0
3 years ago
Reactivity, flammability, and the ability to rust are types of _________.
vaieri [72.5K]

Answer:

stink

Explanation:

8 0
2 years ago
Read 2 more answers
What kind of rocks might you expect to find on the Moon? Why do you think that?​
Vinil7 [7]

Answer:

The Moon's surface is dominated by igneous rocks. The lunar highlands are formed of anorthosite, an igneous rock predominantly of calcium-rich plagioclase feldspar

Explanation:

3 0
2 years ago
How many neutrons does the isotope N-14 have?
Ad libitum [116K]

Answer:

7

Explanation:

N-14 has 7

i looked it up ye ur probably gonna get it right

6 0
3 years ago
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