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2 years ago

In the reaction A + B + C + D, what are the products?

Chemistry

1 answer:

gayaneshka [121]2 years ago

6 0

Answer:

Sorry; this looks like some specific point from class or your book. I can think of each one and create a synthesis, but that isn’t what this is.

Explanation:

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While exploring a coal mine, scientists found plant fossils in the ceiling of the mine which had been preserved by an earthquake

ale4655 [162]

Answer:

11552.45 years

Explanation:

Given that:

Half life = 5730 years

$t_{1/2}=\frac{\ln2}{k}$

Where, k is rate constant

So,

$k=\frac{\ln2}{t_{1/2}}$

$k=\frac{\ln2}{5730}\ years^{-1}$

The rate constant, k = 0.00012 years⁻¹

Using integrated rate law for first order kinetics as:

$[A_t]=[A_0]e^{-kt}$

Where,

$[A_t]$ is the concentration at time t

$[A_0]$ is the initial concentration

Given that:

The rate constant, k = 0.00012 years⁻¹

Initial concentration $[A_0]$ = 160.0 counts/min

Final concentration $[A_t]$ = 40.0 counts/min

Time = ?

Applying in the above equation, we get that:-

$40.0=160.0e^{-0.00012\times t}$

$e^{-0.00012t}=\frac{1}{4}$

$-0.00012t=\ln \left(\frac{1}{4}\right)$

$t=11552.45\ years$

7 0

3 years ago

What is the charge of the ions formed by Na and by Cl?

Alexxandr [17]

Answer:

Na+ is positively charged as it loses an electron

Cl- is negatively charged as it gains an electron

3 0

2 years ago

Which of the following is an essential condition for a redox reaction?

rusak2 [61]

The oxidation of at least two atoms should change

8 0

3 years ago

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What does squeezing do to the particles of snow or ice?

3241004551 [841]

Answer:

crushes the ice to compaction and satasfation

3 0

3 years ago

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How many moles are in 4561 g of C3H7OH?

d1i1m1o1n [39]

Answer: 76.017 moles

Explanation:

3 0

2 years ago