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dsp73
4 years ago
13

A pH of _____ is considered neutral. 2 14 7 0

Mathematics
1 answer:
irina [24]4 years ago
7 0

Answer:

Ph of 7 is considered neutral.

Step-by-step explanation:

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Can someone help me please
const2013 [10]
The correct answer is option C.
6 0
3 years ago
The smallest object visible with your eyes is similar to the width of a piece of hair, which is 1×10−4 meters wide. Using an opt
Sloan [31]

Answer:

B. 5\times10^{2}

Step-by-step explanation:

We are told that the smallest object visible with our eyes is similar to the width of a piece of hair, which is 1\times 10^{-4} meters wide.

Using an optical microscope, we can see items up to 2\times 10^{-7} meters wide.

To find the objects we can see with our eyes are how much larger than the objects we can see with an optical microscope, we can set an equation as:

\frac{\text{The width of the object we can see with our eyes}}{\text{The width of the objects we can see with microscope}}=\frac{1*10^{-4}}{2*10^{-7}}

Using the exponent rule of quotient \frac{a^m}{a^n}=a^{m-n} we will get,

\frac{\text{The width of the object we can see with our eyes}}{\text{The width of the objects we can see with microscope}}=\frac{1}{2}*10^{-4-(-7)}

\frac{\text{The width of the object we can see with our eyes}}{\text{The width of the objects we can see with microscope}}=0.5*10^{-4+7}

\frac{\text{The width of the object we can see with our eyes}}{\text{The width of the objects we can see with microscope}}=0.5*10^{3}

\frac{\text{The width of the object we can see with our eyes}}{\text{The width of the objects we can see with microscope}}=0.5*10\times 10^{3-1}

\text{The object we can see with our eyes}=5\times10^{2}*\text{The objects we can see with microscope}

Therefore, the objects we can see with our eyes are 5\times10^{2} times larger than the objects we can see with an optical microscope and option B is the correct choice.

3 0
3 years ago
CAN YOU HELP ME WOTH GEOMETRY! It's due TONIGHT!
mash [69]

Answer:

look down below

Step-by-step explanation:

We know that AB = DC, and BC = AD, ∠B = ∠D because they are given

So, ΔABC ≅ ΔCDA because of SAS congruency

3 0
3 years ago
In amelies home town the ratio of cars to people is 420 to 1000. what fraction shows this ratio in simplest form
Vanyuwa [196]
21/50; 420/1000=42/100 simplify it and it is 21/50
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3 years ago
What is the slope intercept form for this graph ? Please answer this !!
natali 33 [55]
Y = -2x+0

I don't think you need to add the 0 though.
5 0
4 years ago
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