3 years ago

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 $\boxed{\textbf{1.81 da}}$ .

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3 years ago

Write a paragraph to explain the answer to the following prompt:

Anton [14]

Answer:

hinndndnnddnndndndnd do djfj

Explanation:

hdhdjdbdndndndjjddjdndjdjdndnndndndnd be rnnrbr

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3 years ago

Reactivity, flammability, and the ability to rust are types of _________.

vaieri [72.5K]

Answer:

stink

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2 years ago

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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:

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2 years ago

How many neutrons does the isotope N-14 have?

Ad libitum [116K]

Answer:

Explanation:

N-14 has 7

i looked it up ye ur probably gonna get it right

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