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GuDViN [60]
3 years ago
6

Torrey's neighbor told her that a marble rolling down a hill increases in velocity as it rolls down, but does not increase in ki

netic energy because energy can neither be created nor destroyed, so it always has the same amount kinetic energy is Torrey's neighbor correct ? If they are correct, explain how you know . If they are not correct would you explain to them the fault in their thinking ?
Chemistry
1 answer:
ziro4ka [17]3 years ago
6 0

Answer:

Torrey's neighbour is incorrect because increase in kinetic energy is proportional to velocity.  If the velocity increases so will the object's kinetic energy.  Because the mass is constant, if the velocity increases, so does the kinetic energy.

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How is the way a mixture is combined different from how a compound is combined?
artcher [175]

Mixture is composed of molecules of different types. A compound can only be separated through chemical means. While a compound is a pure substance that contains 2 or more elements chemically combined together while a mixture are formed when two substances are added together without chemical bonds being formed.

7 0
3 years ago
If 25 g of Al was added to 90 g of HCl, what mass of H2 will be produced?
jok3333 [9.3K]

Answer:

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Explanation:

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3 0
2 years ago
Read 2 more answers
Explain how you would use ir spectroscopy to distinguish between 1-bromo-3-methyl-2-butene and 2-bromo-3-methyl-2-butene.
bulgar [2K]
Structures of <span>1-bromo-3-methyl-2-butene and </span>2-bromo-3-methyl-2-butene are shown below.

It can be seen that <span>1-bromo-3-methyl-2-butene is containing a C-H bond in which carbon is sp</span>² hybridized (i.e. =C-H) while such bonding is absent in 2-bromo-3-methyl-2-butene. 

So, as we know that the peak of C-H stretching of alkenes is found in the region of 3010-3100 cm⁻¹ with medium intensity. Therefore, 1-bromo-3-methyl-2-butene will show this peak and 2-bromo-3-methyl-2-butene will lack this peak in IR spectrum.

3 0
3 years ago
What compares a law and a theory?
fredd [130]

Answer:

A hypothesis is a limited explanation of a phenomenon; a scientific theory is an in-depth explanation of the observed phenomenon. A law is a statement about an observed phenomenon or a unifying concept, according to Kenne saw State University. ... However, Newton's law doesn't explain what gravity is, or how it works.

Explanation:

6 0
3 years ago
What is the potential energy of a car with a mass of 1200kg at the top of a 42m high hill?
Oduvanchick [21]

Answer:

P.E = 493920 j

Explanation:

Given data:

Mass = 1200 kg

height = 42 m

Potential energy = ?

Solution:

Formula:

<em>P.E = mgh</em>

Now we will put the values in formula.

g = 9.8 m/s²

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P.E = 493920 Kg.m²/s²

Kg.m²/s² = j

P.E = 493920 j

7 0
3 years ago
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