2 years ago

HELP PLEASE?! I will upvote all answers!

1 answer:

6 0

I believe the answer is a theory.

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Sedbober [7]

Answer: chemical

Explanation: whenever heat is applied, it indicates a chemical change

4 0

2 years ago

solong [7]

The question is already answered.

3 0

2 years ago

Ksenya-84 [330]

Explanation:

Let the age to be found in years is y.

Hence, $(2480 disintegrations) \times \frac{\frac{1.0g}{0.250g}}{1.84 \times 10^{4} disintegrations}$

= (\frac{1}{2})^{\frac{y}{5730yr}}

Solve for y as follows.

0.53913 = (\frac{1}{2})^{\frac{y}{5730yr}}

Now, taking log on both the sides as follows

log 0.53913 = $(\frac{z}{5730}) log \frac{1}{2}
$

$\frac{log 0.53913}{log (1/2)}$ = $\frac{z}{5730}$

z = $\frac{5730 \times log 0.53913}{log (1/2)}$

= 5107 years

Thus, we can conclude that the time since death is 5107 years.

5 0

2 years ago

Serjik [45]

Answer:

dbdbdbdjdbdjdb zbdjdjdjdirfjfjrjdudhdhdhd

6 0

2 years ago

n200080 [17]

The salt bridge prevents the direct mixing of one half-cell solution with the other and allows ions to migrate from one half-cell to another.

6 0

2 years ago