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3 years ago

Please help with chem question

Chemistry

1 answer:

ahrayia [7]3 years ago

5 0

The appropriate option would be the 3rd one, knowing that the closeness of the particles greatly impacts weak nonpolar and other intermolecular interactions. The solids would showcase strong intermolecular forces and thus possess greater energy in those interactions between solids than liquids.

Solids are in fact more closely packed.

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Add 92.2 km to 9426 m and report the answer in

Mashcka [7]

to convert m into km we have to divide it by 1000.so,

9426/1000=9.426km

92.2km+9.426km=101.626km.

3 0

2 years ago

Barbara is converting 78°F to degrees Celsius. First, she subtracts 32 from 78. What is the next step?

goldfiish [28.3K]

Answer:

Now she multiplies by 0.5556

Explanation:

7 0

2 years ago

Who is Alfred Wegener? What did he discover?

Aliun [14]

Answer:

Alfred Wegener proposed the theory of continental drift – the idea that Earth's continents move. Despite publishing a large body of compelling fossil and rock evidence for his theory between 1912 and 1929, it was rejected by most other scientists.

Hope this helps!

3 0

3 years ago

How can one tell how much of each reactant will be used in a reaction?

Ostrovityanka [42]

To Tell how much of each reactant will be used in a reaction, we need to find which reactant is the Limiting Reagent.
All the reactants will be consumed in equal amount as that of L.R.

5 0

3 years ago

Why is the answer C for this problem?

pshichka [43]

Answer:

$\boxed{\text{(C) X}$_{3}$P$_{2}}$

Explanation:

Step 1. Identify the Group that contains X

We look at the consecutive ionization energies and hunt for a big jump between them

$\begin{array}{crc}n & IE_{n} & IE_{n} - IE_{n-1}\\1 & 730 & \\2 & 1450 & 720\\3 & 7700 & 6250\\4 & 10500 & 2800\\\end{array}$

We see a big jump between n = 2 and n = 3. This indicates that X has two valence electrons.

We can easily remove two electrons, but the third electron requires much more energy. That electron must be in the stable, filled, inner core.

So, X is in Group 2 and P is in Group 15.

Step 2. Identify the Compound

X can lose two valence electrons to reach a stable octet, and P can do the same by gaining three electrons.

We must have 3 X atoms for every 2 P atoms.

The formula of the compound is $\boxed{\text{X}$_{3}$P$_{2}}$}$ .

4 0

3 years ago