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nydimaria [60]
3 years ago
14

Stronger intermolecular forces predict ________ boiling point and ________ vapor pressure.

Chemistry
1 answer:
allochka39001 [22]3 years ago
6 0

Answer:

A. higher, lower

Explanation:

- Stronger intermolecular bonds require more energy and therefore create higher boiling points.

- Stonger intermolecular bonds create stronger interactions,which causes the vapor pressure to lower.

- Hope that helped! Please let me know if you need further explanation.

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Which source of energy causes most of the water evaporation on Earth’s surface?
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The heat energy that causes most of the water evaporate on the surface of the Earth is the Sun. Which provides earth most of the thermal energy into the hydro-thermodynamic system on Earth.

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Which of these bonds should be classified as ionic?
jolli1 [7]

Answer:

Na-O

Be-S

Explanation:

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What is 5L to mL ( chemistry )
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There are 1000 mililiters in a liter, so 1000 ml for every liter, you have 5 liters, so:

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How to find how many electrons are in an element
Murljashka [212]

Explanation:

1) Locate the atomic number in the upper left corner of the square. The atomic number will tell you the number of protons

2) In a neutral state, the element will contain the same number of protons as it will electrons.

--> Boron (B) has an atomic number of 5, so it has 5 protons.

--> Having 5 protons (+1 charge each) means to be balanced, it must have 5 electrons (-1 charge each)

However, what if it's not in a neutral state?

If it's not in a neutral state, it will look something like this:

Ca ^ 2+

<em>Btw, the "^" means that it will be written like it's an exponent. That confuses people sometimes.</em>

Anyways, the "2+" means it's an ion with a positive charge of 2. For us to have a positive charge, it means it's lost two electrons (cause electrons are negative, so taking them away means we are left with a more positive charge).

To get the number of remaining electrons, subtract the 2 from the atomic mass. In this case, that would be 20.

20 - 2 = 18 electrons

Another example:

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Why did I add here instead of subtracting? It's cause the 3- means we have added electrons, resulting in the ion having a negative charge. It's got more electrons than usual.

Hopefully this helps a bit.

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3 years ago
How many moles of He are in 16 g of the element? 1.0 mol 4.0 mol 8.0 mol 16 mol
Lady bird [3.3K]

Answer: 4 Mole

Explanation:

16/4 = 4

4 0
3 years ago
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