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VashaNatasha [74]
2 years ago
5

DONT COMMENT ANY LINKS OR DONT COMMENT IF YOU DONT KNOW THE ANSWER.

Chemistry
2 answers:
Vsevolod [243]2 years ago
3 0

Answer:

the first one is protons and electrons the second one is protons the third one is neutrons and the forth one is also neutron

Tom [10]2 years ago
3 0
1. protons and electrons 2. protons 3. neutrons 4. neutrons
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How many grams of oxygen are required to burn 60 grams of ethane gas, C2H6? 2 C2H6 (g) + 7 O2(g) → 4 CO2 (g) + 6 H2O (g)
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8 0
3 years ago
How many moles are in 458 grams of na2so4
shtirl [24]

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# moles = 458 / ((23*2)+32+(16*4)

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Colorea los recuadros que representan la acciones viables para usar racionalmente los recursos y contaminar menos
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<h3 /><h3>¿Qué importancia tiene la sostenibilidad?</h3>

Es fundamental para la preservación y mantenimiento del medio ambiente y la calidad de vida de las generaciones actuales y futuras. El desarrollo de acciones sostenibles promueve la protección del medio ambiente, los ecosistemas y los recursos naturales.

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7 0
2 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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