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Rom4ik [11]
3 years ago
12

Which of the following is a true statement about bacteria, based on what Tim and Moby explained??

Chemistry
2 answers:
Rama09 [41]3 years ago
7 0

Answer:

D: Bacteria can be both harmful and helpful to humans.

Explanation:

Hope this helps

allsm [11]3 years ago
5 0
I believe it’s D

There is good and bad bacteria that can be both harmful and good for humans
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Which of these statements is not true about chemical reaction rates?
Sliva [168]
I think it is A. The reaction rates can change.
I think we all know that B. and C. are incorrect, but I took a science lesson about this and it specifically said that on a graph of a rate, a curved line is NOT constant, meaning it is possible to not be constant.
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4 years ago
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Fluorine has 7 valence electrons. Which of the following is true of a fluorine molecule (F2)? a: A pair of electrons will be sha
Alex73 [517]
The best and most correct answer among the choices provided by the question is the fourth choice "<span>Each fluorine atom will take 1 valence electron from the other, and this will constantly happen back and forth." This is because the 7 valence electrons are difficult to remove.</span>

I hope my answer has come to your help. God bless and have a nice day ahead!
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4 years ago
When a substance melts the kinetic energy
aliina [53]

Answer:

C stays The same.

Is the answer.

8 0
3 years ago
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The Nernst equation at 20oC is:
saw5 [17]

Answer:

a. -58 millivolts

Explanation:

The given Nernst equation is:

E_{ion} = 58 millivolts /z \Big[ log_{10} \Big( \dfrac{[ion]_{out}}{[ion]_{in}}\Big) \Big]}

The equilibrium potential given by the Nernst equation can be determined by using the formula:

E_{Cl^-} = \dfrac{2.303*R*T}{ZF} \times log \dfrac{[Cl^-]_{out}} {[Cl^-]_{in}}

where:

gas constant(R) = 8.314 J/K/mol

Temperature (T) = (20+273)K

= 298K

Faraday constant F = 96485 C/mol

Number of electron on Cl = -1

E_{Cl^-} = \dfrac{2.303*8.314*298} {(-1)*(96845)} \times log \dfrac{100} {10}

E_{Cl^-} = - 0.05814  \ volts

\mathsf{E_{Cl^-} = - 0.05814  \times 1000 \  milli volts}

\mathsf{E_{Cl^-} \simeq - 58\   milli volts}

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3 years ago
Which property increases as you move down a column in the periodic table?
777dan777 [17]

Answer:

I think it's c have a good day

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