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andrezito [222]
3 years ago
7

A student dips a strip of metal into a liquid. Which is evidence that only a physical change has occurred? The metal bends more

easily. The metal changes color. The metal gives off light. The metal gives off heat.
Chemistry
2 answers:
Kazeer [188]3 years ago
7 0

Answer: Option (a) is the correct answer.

Explanation:

A change which brings no chemical change in composition of the substance is known as a physical change.

For example, bending of metal strip is a physical change as it does not change the chemical composition of substance.  

Whereas metal changes color, metal gives off light, and metal gives off heat are all chemical changes.

Thus, we can conclude that out of the given options, the metal bends more easily is evidence that only a physical change has occurred.

bixtya [17]3 years ago
4 0
The metal bends more easily is the correct answer all the others are cause via chemical reactions
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Answer:

V=23.5L

Explanation:

Hello,

In this case, it is convenient to compute the car's mileage in km/L as follows:

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In such a way, since the distance is measured to be 250 km, the volume requirement is:

V=\frac{250km}{10.64kg/L}\\ \\V=23.5L

Regards.

7 0
3 years ago
What element is denoted by 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d6
IrinaVladis [17]

Element 76....Osmium

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3 years ago
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If the half-life of Carbon-14 is 5700 years, how many years would it take a sample to decay from 1 gram to 31.3 mg
andrew-mc [135]

Answer:

28500 years

Explanation:

Applying,

A = A'(2^{x/y})............... Equation 1

Where A = Original mass of Carbon-14, A' = Final mass of carbon-14 after decaying, x = total time, y = half-life.

From the question,

Given: A = 1 g, A' = 31.3 mg = 0.0313 g, y = 5700 years.

Substitute these values into equation 1

1 = 0.0313(2^{x/5700})

2^{x/5700} = 1/0.0313

2^{x/5700}  = 31.95

2^{x/5700} ≈ 32

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Equating the base and solve for x

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3 0
3 years ago
What is the relationship between the number of each atom used to form compound and oxidation number?
deff fn [24]

Answer:Explanation:

In compounds, all other atoms are assigned an oxidation number so that the sum of the oxidation numbers on all the atoms in the species equals the charge on the species.

6 0
3 years ago
What is the most soluble salt of the following set? What is the most soluble salt of the following set?
DiKsa [7]

Answer:

(c) AgCN\ (K_{sp} =6.0\times 10^{-17})

Explanation:

The solubility product of a solid is the amount of solid dissociates into its respective ions in the solution. Thus more the value of the Ksp, the more is the salt soluble in the solvent.

So,  Given that:-

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4 0
3 years ago
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