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4 years ago

Why do substances with weak intermolecular forces form solids at low melting points?

1 answer:

7 0

To make any substance solid, molecules must come very close to each other. Substances with weak intermolecular forces have weak bonding. Hence to make their molecules come close to each other, we must provide low temperature.

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PLEASE HELP!’ DUE IN 10 MINS

Aleksandr [31]

Answer:

The products are SnPO4 and LiC2H3O2

Explanation:

The reactants are LiPO4 + Sn(C2H3O2)2

This is a double replacement reaction

So what you do is switch the elements the other way around.

To do that, all you have to do switch Sn with PO4 since Sn is a cation and PO4 is an anion.

Then you switch Li with C2H3O2 because Li is a cation and C2H3O2 is an anion.

After that, check the charges. PO4 has -3 charge

So just leave Sn the way it is without a subscript.

In word form, the product would be Tin(III) Phosphate

C2H3O2 has a -1 charge Li has a +1 charge

So leave both of them the way it is without any subscripts.

In word form, the product would be Lithium Acetate

7 0

3 years ago

Find a total pressure of the gas mixture that contains forecast is with partial pressure of 5.00 kPa, 4.56 kPa 356 kPa and 678KP

Orlov [11]

Answer: 1044 kPa

Explanation: To find the total pressure of a system, you add up all the partial pressures. 5.00+4.56+356+678=1043.56, but since you need to account for significant figures it is 1044.

In addition, the amount of significant figures is the number with the smallest amount of decimal places. In this case you have no decimal places, since 356 and 678 have no decimal places. Remember that for the numbers 0-4 you round down and 5-9 you round up.

7 0

3 years ago

Power plants release sulfur dioxide and nitrogen oxides into the atmosphere where they combine with water vapor to form _____.

Ad libitum [116K]

Answer:

The correct option is acid precipitation

Explanation:

When sulfur dioxide react with water vapors, they form sulphuric acid.
Similarly, when NOx reacts with water vapors to form HNO2 and HNO3.
So these acid cause the rain water into acidic rain.

4 0

4 years ago

Read 2 more answers

107. The lightest noble gases, such as helium and neon, are completely inert—they do not form any chemical compounds whatsoever.

dmitriy555 [2]

Explanation:

Noble gases are group O elements and their atomic structure ensures that they are stable. All their orbitals are completely filled with electrons therefore they do not undergo reactions with other elements.

Heavier noble gases are able to form a range of compounds due their sizes.
Elements form compounds by exchanging or sharing of their outermost shell electrons called the valence electron.
Every atom has specific energy required to remove electrons from them. The energy is known as the ionization energy.
In bigger atoms which have large radius, the outermost electrons have low ionization energy which makes them easy to remove.
The ionization energy depends on the nuclear charge, the more the charge the higher the ionization energy. Down a group the nuclear charge and ionization decreases.
As we go down the inert group, the ionization energy of outer shell electrons become very low. This makes the electrons available to take part in chemical reactions.

Learn more:

Noble gas brainly.com/question/10874792

#learnwithBrainly

5 0

3 years ago

Can someone help me with that question

Katen [24]

Answer:

Gene - determines the trait (phenotype)

6 0

3 years ago