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sasho [114]
3 years ago
5

Give 3 examples of things that are not matter

Chemistry
2 answers:
RSB [31]3 years ago
8 0
Time, Love, Thoughts are three things that do not meet the definition of matter
EleoNora [17]3 years ago
8 0
Non-matter includes light from torch ,heat from fire and sound for a police siren.
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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
Which polyatomic ion is found in the compound represented by the formula NaHCO3?
olga nikolaevna [1]

Answer is (2) - hydrogen carbonate


<em>Explanation:</em>


NaHCO₃ is an ionic compound which is made from Na⁺ and HCO₃⁻ ions. The decomposition is

NaHCO₃ → Na⁺ + HCO₃⁻


Among the resulted ions, Na⁺ is a monatomic ion while HCO₃⁻ is a polyatomic ion.


<em>Polyatomic ions mean ions which are made of two or more different atoms.</em>


HCO₃⁻ is made from 3 atoms as H, C and O. The name of HCO₃⁻ ion is bicarbonate or hydrogen carbonate.

8 0
3 years ago
Which element reacts spontaneously with 1.0M HCl (aq) at room temperature?
Ad libitum [116K]
<span>(4) zinc.................</span>
8 0
3 years ago
Read 2 more answers
How many times stronger is ph4 than ph6?
BaLLatris [955]

Answer:

10 times more acidic than pH5 and 100 times more acidic than pH6

Explanation:

6 0
3 years ago
Which compound listed below has the largest molar mass?<br> Ca(OH)2<br> H20<br> CaCl2<br> NH3
Crazy boy [7]

Answer: the answer would be CaCI2

Explanation: this was one of my exam questions i got right. :)

8 0
3 years ago
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