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olga2289 [7]
2 years ago
5

What are the student’s observations and inferences before he starts his investigation?

Biology
1 answer:
Andru [333]2 years ago
3 0

Answer:

Hypothesis. A Hypothesis is an estimation of what might happen and the student's observation before moving on to investigate.

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Which is an immune response ?
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Answer:

The immune response is your body's third line of defense. In this response, your body releases B-Cells and T-Cells to fight the antigen and destroy it.

Explanation:

Hope this helps!

8 0
3 years ago
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Beetles are typically the first insects present on human remains.<br><br> True<br> False
Ivan
I believe it would be false. Termites are generally the first on human remains. I could be wrong though.
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Is a grasshopper a herbivore carnivore or omnivore
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Grasshoppers are a herbivores because they eat plants

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2 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
More than 200 different type of cels exist in the human body. Why do you think these cells are important for various body functi
Dennis_Churaev [7]

Answer:Different cells have different jobs to do. Each cell has a size and shape that is suited to its job. Cells that do the same job combine together to form body tissue, such as muscle, skin, or bone tissue. Groups of different types of cells make up the organs in your body, such as your heart, liver, or lungs

Explanation:

7 0
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