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astra-53 [7]
3 years ago
14

What is the difference between a scientific theory and an opinion?

Chemistry
1 answer:
Sergio039 [100]3 years ago
5 0

Answer:

An opinion is a statement describing a personal belief or thought that cannot be tested (or has not been tested) and is unsupported by evidence. ... Theories are not described as true or right, but as the best-supported explanation of the world based on evidence.

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To titrate 45.00 milliliters of an unknown HCl sample, use 25.00 milliliters of a standard 0.2000 M NaOH titrant. What is the mo
gtnhenbr [62]
V ( HCl ) = 45.00 mL in liters : 45.00 / 1000 => 0.045 L

M ( HCl ) = ?

V ( NaOH ) = 25.00 / 1000 => 0.025 L 

M ( NaOH) = 0.2000 M

number of moles NaOH :

n = M x V = 0.2000 x 0.025 => 0.005 moles of NaOH

Mole ratio:

HCl + NaOH = NaCl + H2O

1 mole HCl ---------- 1 mole NaOH
? mole HCl ---------- 0.005 moles NaOH

moles HCl = 0.005 x 1 / 1

= 0.005 moles of HCl :

M ( HCl ) = n / V

M ( HCl ) = 0.005 / 0.045

= 0.1111 M

hope this helps!




4 0
3 years ago
HELP ME PLEASE
Alika [10]

Answer: it is a good conductor of electriciy tht is what wires are made of and it is a good conductor of heat so it will be able to handle the heat from the electricity

Explanation:

7 0
3 years ago
Read 2 more answers
If the density of mercury is 13.6g/ml, how many ml of mercury are in 1,000 g of mercury?
Illusion [34]

Answer:

<h2>73.53 mL</h2>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

volume =  \frac{mass}{density} \\

From the question we have

volume =  \frac{1000}{13.6}  \\  = 73.52941...

We have the final answer as

<h3>73.53 mL</h3>

Hope this helps you

6 0
3 years ago
Does anybody know the answer to these two questions ?
Serjik [45]
the first is hydroxide. I believe d is the second one but I'm not 100% positive so you may want to get a second opinion
4 0
3 years ago
I am so bored someone talk
kolezko [41]

Answer:

hello.

Explanation:

you wanted to talk? well here I am

5 0
2 years ago
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