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gladu [14]
3 years ago
7

After completing 10 years of experimentation, a scientist reports a new scientific law about the movement of sand on beaches. Ho

w do you know that this information cannot be valid?
Chemistry
2 answers:
miv72 [106K]3 years ago
5 0

Answer:

there are no previous laws to substantiate the information.

Explanation:

Scientific laws build upon each other. In other words, the laws complement each other. For instance, there are laws that are known as the fundamental laws. These laws lay down the foundation of all scientific beliefs and hypotheses. Without a satisfaction of these laws, the research will be null and void. In fact, it will be invalid unless the first principles of the physical laws are satisfied and proved.

MrRissso [65]3 years ago
3 0
Scientific laws are not proven, rather they are assumed to be true by the results of other experiments. Basically, this scientist is saying that he has proven a scientific law, which is not possible. He most likely has proven a scientific theory if he has proven something.
Hope that helps!
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Harlamova29_29 [7]

Answer:

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Explanation:

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5 0
2 years ago
Read 2 more answers
25. Energy is released during the fissionof Pu-239 atoms as a result of the(1) formation of covalent bonds(2) formation of ionic
Mariulka [41]
Answer ( 3 ) :

<span>conversion of matter to energy .
</span>
hope this helps!
4 0
3 years ago
34. 3.15 mol of an unknown solid is placed into enough water to make 150.0 mL of solution. The solution's temperature increases
Digiron [165]

Answer:

ΔH = 2.68kJ/mol

Explanation:

The ΔH of dissolution of a reaction is defined as the heat produced per mole of reaction. We have 3.15 moles of the solid, to find the heat produced we need to use the equation:

q = m*S*ΔT

<em>Where q is heat of reaction in J,</em>

<em>m is the mass of the solution in g,</em>

<em>S is specific heat of the solution = 4.184J/g°C</em>

<em>ΔT is change in temperature = 11.21°C</em>

The mass of the solution is obtained from the volume and the density as follows:

150.0mL * (1.20g/mL) = 180.0g

Replacing:

q = 180.0g*4.184J/g°C*11.21°C

q = 8442J

q = 8.44kJ when 3.15 moles of the solid react.

The ΔH of the reaction is:

8.44kJ/3.15 mol

= 2.68kJ/mol

5 0
2 years ago
Add a nail in CuSO4 Sodium, the colour of CuSO4 disappears why?
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The iron nail displaces the Cu from the copper sulfate solution.  This results in the color of CuSO4's disappearance. Copper is less reactive than iron.

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3 years ago
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I need some help with this. I’m so confused on what to do and an explanation to what the answer is and why would be ideal.
Anvisha [2.4K]

Answer:

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