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Sati [7]
3 years ago
11

!!10 points!!!Which of the following has stored gravitational potential energy?

Chemistry
2 answers:
Flura [38]3 years ago
3 0
The answer is B, a leaf hanging on a tree
crimeas [40]3 years ago
3 0

Answer:

a leaf hanging on a tree

Explanation: on apex

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What type of sugar has the largest surface area
Valentin [98]

Answer:

d.) granulated

Because the granulated sugar has a greater surface area.

7 0
3 years ago
How much heat does it take to melt 5.0g solid copper?
Leya [2.2K]

Answer:

Q=1.04kJ

Explanation:

Hello,

In this case, for latent heat (phase change) we need to consider the enthalpy associated with the involved process, here, melting or fusion; thus, the enthalpy of fusion of copper is 13.2 kJ/mol, therefore, the heat is computed as:

Q=m\Delta H_{fus}

Nevertheless, since the given enthalpy is per mole of copper, we need to use its atomic mass to perform the correct calculation as follows:

Q=5.0g*\frac{1mol}{63.54}* 13.2\frac{kJ}{mol}\\ \\Q=1.04kJ

Which is positive as it needs to be supplied to the system.

Best regards.

5 0
3 years ago
g If you have three identical containers (same volume) at the same temperature and pressure, each with a different gas. Containe
vekshin1

Answer:

<em>The three gases, in the three identical containers, will all have the same number of molecules</em>

Explanation:

If these three gases (Helium He, Neon Ne, and Oxygen O_{2}) are all contained in separate identical containers with the same volume. And they are all stored at the same temperature, and pressure. Then, they'll all contain the same number of molecules. This is in line with Avogadro's law which states that "Equal volume of all gases, at the same temperature and pressure, have the same number of molecules."

6 0
3 years ago
covalent bond would be formed in which pair of elements? Carbon and oxygen, any two noble gasses, sodium and chlorine , between
SOVA2 [1]

Answer:

Carbon and Oxygen, Argon and Helium.

Explanation:

noble gases have full outer shells of electrons, and so cannot share other atoms' electrons to form bonds. sodium and chlorine form an ionic bond.

4 0
3 years ago
A chlorine atom has a diameter of 175 picometers (pm). Please write the diameter, in metered, in scientific notation.
IrinaVladis [17]
The answer is 1.75 x 10¹⁰ m.
Scientific notation<span> refers to a mathematical expression that is  used to represent a decimal number between 1 and 10 multiplied by ten, or we can say that to write a large numbers using less digits. 
Diameter of chlorine atom = </span><span>175 picometers (pm) 
</span>175 pm = <span>0.000000000175 m
in scientific notation we will write </span>0.000000000175 m as <span>1.75 x 10</span>¹⁰ m
8 0
3 years ago
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