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____ [38]
3 years ago
7

Помогите срочно!!! Умоляю

Biology
1 answer:
Alexxandr [17]3 years ago
6 0

огите срочно

Explanation:

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The term "Protista" in Latin means "the first." Why did biologists use this word as the name for organisms in kingdom Protista?
julia-pushkina [17]

Answer:

I believe that the protists were the first organisms on earth. And the other 5 kingdoms then came from the protists.

I think that's it! :)

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3 years ago
The theory of evolution that states that a species evolved in spurts of rapid change and then goes through periods of no change
notsponge [240]
I think Punctuated Equallibruim is your answer
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Step 6: Measure the Number and Height of the Plants at the End
-Dominant- [34]

Answer:

first one - 8

second one - 72

Explanation:

i took it !!

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3 years ago
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Una solución de 0.204 M de NaOH seutiliza para neutralizar 50 mL de una solución de H3PO4. Si se necesitaron 16.4 mL de la soluc
vfiekz [6]

Answer: 0.05 M

Explanation:

Para responder esta pregunta, hay que tener en cuenta la Ley de Conservación de la Masa. <u>La misma indica que en una reacción química en un sistema cerrado, la masa total de las moléculas que participan permanece constante.</u> Esto significa que la masa utilizada en los reactivos es la misma que la masa de los productos generados.

En este problema, se cuenta con una solución de NaOH (hidróxido de sodio) tiene una molaridad de 0.204 (siendo la molaridad el número de moles por litro de solución) y se utilizan 16.4 mL de dicha solución para agregarla a 50 mL de una solución de H3PO4 (ácido fosfórico).

Entonces, ya que la masa de ambas soluciones no se pierde, podemos utilizar la ecuación de la Ley de Conservación de la Masa:

Concentración inicial x Volumen inicial = Concentración final x Volumen final.

Concentración inicial: 0.204 M

Volumen inicial: 16.4 mL

Concentración final: ?

Volumen final: 50 mL + 16.4 mL = 66.4 mL

Reemplazamos los valores en la ecuación:

0.204 M x 16.4 mL = Concentración final x 66.4 mL

La molaridad de la solución de H3PO4 es de 0.05 M.

7 0
3 years ago
Design an experiment to test whether using soap or bleach is the better way to clean boots to prevent Bd contamination. Remember
vekshin1
Bleach
workesgood it takes off all the stuff good

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