The romantic movement started as a rejection of what

Answers

Answer 1

Answer:

changes brought by industrialization

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2Al + 6HCl → 2AlCl3 + 3H2 If 3.0 grams of H2 were produced, how many grams of Al reacted? (Molar mass of Al = 27 g/mol, molar mass of H2 = 2.0 g/mol) ___ grams

A chemist wants to calculate the amount of heat that is absorbed by a sample of copper as it is melted. Which constant should she use?

Answers

She needs to use the heat of fusion (ΔH(fusion)) and the equation q=mΔH(fusion) or q=nΔH(fusion) depending on whether or not ΔH(fusion) is given in J/g or J/mol. The reason why temperature is absent from the equation is that temperature does not change at a phase change, only the enthalpy does.

I hope his helps. Let me know in the comments if anything is unclear.

Answer:

Hfus

Explanation:

This is correct on edge.

What is the molarity of 1.5 liters of an aqueous solution that contains 52 grams of lithium fluoride, LiF, (gram-formula mass =26 grams/mole)?(1) 1.3 M (3) 3.0 M
(2) 2.0 M (4) 0.75 M

Answers

The answer is (1) 1.3 M. The first thing you need to do is to convert the unit of gram to mole. The mol number of LiF is 52/26=2 mol. Then using the volume to calculate the molarity: molarity=2/1.5=1.3 M.

Researchers have now been able to cool substances to absolute zero.
a. True
b. False

Answers

Answer:

The correct option is B) false.

Explanation:

Absolute zero is the point where it is not feasible to cool further.

The lowest possible temperature is 0 kelvin which is also known as absolute zero. In degrees its corresponds to –273.15 degrees Celsius.

it is not possible to reach or cool a substance to absolute zero although nearby temperatures can be reached.

Consider the provided statement.

Researchers have now been able to cool substances to absolute zero is a false statement.

The correct option is B) false.

This Answer Is False.

The chemical symbol for sodium is
A. S.
B. N.
C. Sn.
D. Na.

Answers

The chemical symbol for sodium is Na. Hope this helped!

A scientist discovers a new substance. The molecules of the substance form hydrogen bonds with each other. When the molecules lose a lot of energy, the hydrogen bonds hold them relatively far apart. Based on this information, what can the scientist infer about the substance?

Answers

Answer is: It expands when it freezes.

When molecule frezes, it lose energy. When molecules are far apart, it means the volume is greater and it expands.

For example, ice expands when water is freezing.

Hydrogen bond is an electrostatic attraction between two polar groups that occurs when a hydrogen atom (H), covalently bound to a highly electronegative atom such as flourine (F), oxygen (O) and nitrogen (N) atoms.

The more the heat energy present in it the bond between the molecules gets weaker just like water

Please help me, please

Answers

Answer:

A. Metal

Explanation:

Hope this helps! :)

If this wasn't what you were looking for please don't hesitate to comment again! Have a nice day/night! :)

Answer:

Metal

Explanation:

they deleted my answer so I am putting it back sorry

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