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fgiga [73]
3 years ago
15

True or False: Different substances, like shortening and soap, will melt at the same temperature. True False​

Chemistry
2 answers:
stiks02 [169]3 years ago
8 0
Answer: true

explanation:
Murrr4er [49]3 years ago
7 0

Answer:

false

Explanation:

different things will have different melting points

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1. Al+3 has how many neutrons?<br><br>2. thorium-230 has how many protons, neutrons and electrons?
Usimov [2.4K]

The mass number of aluminium is 26 and the atomic number of aluminium is 13.

The number of neutrons is given by the difference between the mass number and number of protons.

number of neutrons = mass number - number of protons

Number of protons = 13

Mass number of Aluminium = 26

Therefore number of neutrons = 26-13 = 13.

The atomic number of thorium is 90 and the mass number of thorium is 230 as given in the question

atomic number = number of electrons =  number of protons

Therefore the number of electrons in thorium 230 = 90

Number of protons in thorium 230 = 90

Number of neutrons = Mass number - number of protons = 230-90 = 140

8 0
3 years ago
Give the oxidation state of the metal species in each complex. ru(cn)(co)4 -
kogti [31]
The given complex ion is as follow,

                                              [Ru (CN) (CO)₄]⁻

Where;
            [ ]  =  Coordination Sphere

            Ru  =  Central Metal Atom  =  <span>Ruthenium

            CN  =  Cyanide Ligand

            CO  =  Carbonyl Ligand

The charge on Ru is calculated as follow,

                               Ru + (CN) + (CO)</span>₄  =  -1
Where;
            -1  =  overall charge on sphere

             0  =  Charge on neutral CO

            -1  =  Charge on CN

So, Putting values,


                               Ru + (-1) + (0)₄  =  -1

                               Ru - 1 + 0  =  -1

                               Ru - 1  =  -1

                               Ru  =  -1 + 1

                               Ru  =  0
Result:
          <span>Oxidation state of the metal species in each complex [Ru(CN)(CO)</span>₄]⁻ is zero.
3 0
4 years ago
Read 2 more answers
Please,help me in question number 2 and 4.<br><img src="https://tex.z-dn.net/?f=2and4%20%5C%5C%20" id="TexFormula1" title="2and4
svetoff [14.1K]
I think it’s 890 I really don’t know
8 0
4 years ago
What is the index of hydrogen deficiency of a compound with a molecular formula of c6h15n?
7nadin3 [17]

Answer:

IHD = 0

Explanation:

Given that

C₆H₁₅N

Number of carbon atoms(n) = 6

Number of hydrogen atoms(x') = 15

Number of nitrogen atoms = 1

There is nitrogen atoms then x = x' -1

The index of hydrogen deficiency given as

IHD=\dfrac{2n+2-x}{2}

So

IHD=\dfrac{2n+2-x}{2}

IHD=\dfrac{2\time 6+2-(15-1)}{2}

IHD = 0

The index of hydrogen deficiency is zero.

6 0
4 years ago
In part A of the experiment you will need to make a 4.80 x 10-4 M KSCN solution starting with a 2.00 x 10-3M KSCN solution. You
ryzh [129]

Answer:

Answer to you need to make a 6.00 x 10-4 M KSCN solution starting with a 2.00 x 10-3 M KSCN solution. You will be making up the so. ... X 10-3 M KSCN Solution. You Will Be Making Up The Solution In A 25 ML Volumetric Flask And Using 0.5 M HNO3 As The Diluent. What Volume Of 2.00 X 10-3 M KSCN Will You Need?

Explanation:

7 0
4 years ago
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