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Vinil7 [7]
3 years ago
6

A group of students used this diagram to classify three organisms into different kingdoms

Chemistry
1 answer:
lubasha [3.4K]3 years ago
8 0
Don’t click the link I think it a a virus
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Which of these observations helped Rutherford determine that atoms have tiny, dense, positively charged nuclei?
gladu [14]
The third reason helped Rutherford to discover the nucleus.
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3 years ago
In the space provided, for each element, type the ionic charge of an atom with a full set of valence electrons. Then, type the n
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11. ionic charge +1, helium.

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13. ionic charge 3+, neon.

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3 years ago
2+4 help please i will fail 6th grade
andrey2020 [161]

Answer:

6

Explanation:

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3 years ago
A first-order decomposition reaction has a rate constant of 0.00440 yr−1. How long does it take for [reactant] to reach 12.5% of
mina [271]

Answer:

473 year

Explanation:

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:

To reach 12.5% of reactant means that 0.125 of [A_0] is decomposed. So,

\frac {[A_t]}{[A_0]} = 0.125

t = ?

\frac {[A_t]}{[A_0]}=e^{-k\times t}

0.125=e^{-0.00440\times t}

t = 473 year

8 0
3 years ago
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gizmo_the_mogwai [7]

Answer:

C

Explanation:

6 0
3 years ago
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