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lapo4ka [179]
3 years ago
9

For the laboratory some students put a strip of shiny metal into a beaker of blue solution and then stored the beaker on a shelf

overnight. The next morning , the students recorded observations about the metal and the solution in the box below Based on their observation, can the students correctly conclude that a chemical reaction occurred ?
Biology
1 answer:
erica [24]3 years ago
5 0

Answer:

Yes, because a new material of a different color formed on part of the metal strip

Explanation: Good luck!

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Ethanol is a fuel that can be made from corn. One of the benefits of using a biomass fuel like ethanol is A.It can only be used
liubo4ka [24]
The fact that it's a renewable resource would be the only benefit. All of the others are disadvantages
4 0
3 years ago
Which of the following expresses -7 as m/n in simple form ?
kicyunya [14]

Answer:

A (-7)/(1)

Explanation:

(-7)/(-1) would be a positive 7.

7/1 would be a positive 7.

(-7)/(0) would be 0.

4 0
3 years ago
Three students made different statements about cells and the human body.
Sveta_85 [38]
I would say Diandra, because she provides the most in depth description!
4 0
3 years ago
Proteus vulgaris has a doubling time of roughly 28 minutes. If an initial population of 500 cells is allowed to grow for 6 hours
romanna [79]

<u>Answer:</u> The final population of Proteus vulgaris after 6 hours is 3.71\times 10^{6}cells

<u>Explanation:</u>

We are given:

Proteus vulgaris divides and doubles every 28 minutes

Total time given = 6 hours = 360 min      (Conversion factor: 1 hr = 60 min)

Number of times Proteus vulgaris doubles in 6 hours = \frac{360min}{28min}=12.857times

Calculating the number of bacteria after 6 hours under ideal conditions:

We are given:

Initial population = 500 cells

Number of times it doubles = 12.857 times

Final Proteus vulgaris population = 500\times 2^{12.857}=3709476.8=3.71\times 10^{6}cells

Hence, the final population of Proteus vulgaris after 6 hours is 3.71\times 10^{6}cells

8 0
3 years ago
I - O selecionador pede para que a pessoa descreva como se comportaria em determinada situação ou trabalhe em cima de um case. P
sashaice [31]

Answer:

O seletor quer saber a ação da pessoa.

Explicação:

O seletor pede que a pessoa descreva como ela se comportaria em uma determinada situação ou trabalharia em um caso, porque o seletor quer saber sobre o comportamento e a inteligência da pessoa para lidar com a situação. o selecionador também quer treiná-lo porque essas situações vão vir na vida profissional dele então ele tem a informação e a experiência de como lidar com isso.

7 0
3 years ago
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