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allsm [11]
4 years ago
7

What temperature is freezing water in celsius?

Chemistry
1 answer:
IrinaVladis [17]4 years ago
8 0
The freezing point of water is 0° C. The Celsius (or centigrade) scale is based off of water, water's freezing point is at 0°, and its boiling point is at 100°. Note that this is something that could be easily googled, and it would have taken less time and less of your points!
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What is another name for the molecular orbital theory of bonding in metals? band theory ionic bond theory covalent bond theory e
mote1985 [20]

Band theory

The atomic orbitals of metals combine to form <em>molecular orbitals</em>. The molecular orbitals are so close in energy that they form a <em>band</em> of energies.

<em>Ionic bond theory</em> is incorrect because there are no ions in metals.

<em>Covalent bond theory</em> is incorrect because there are no covalent bonds in metals.

<em>Electron bond theory</em> is incorrect because there is no theory with that name (but there is a <em>valence bond theory</em>).

4 0
3 years ago
Read 2 more answers
Consider a mixture of NaCl and NaNO3 that is 31.8% Na by mass. Calculate the percentage by mass of NaCl in the mixture.
lutik1710 [3]

<u>Answer:</u> The percentage by mass of NaCl in the mixture is 38.5 %

<u>Explanation:</u>

To calculate the mass percentage of element in compound, we use the equation:

\text{Mass percent of element}=\frac{\text{Mass of element}}{\text{Mass of compound}}\times 100      .......(1)

  • <u>For NaCl:</u>

Mass of sodium element = 23 g

Mass of NaCl = 58.5 g

Putting values in equation 1, we get:

\text{Mass percent of sodium element}=\frac{23g}{58.5g}\times 100=39.32\%

Mass fraction of sodium metal in NaCl = 0.3932

  • <u>For NaNO_3 :</u>

Mass of sodium element = 23 g

Mass of NaNO_3 = 85 g

Putting values in equation 1, we get:

\text{Mass percent of sodium element}=\frac{23g}{85g}\times 100=27.1\%

Mass fraction of sodium metal in sodium nitrate = 0.271

Let us assume the mass fraction of NaCl in the mixture is 'x'

So, the mass fraction of NaNO_3 in the mixture will be '(1-x)'

We are given:

Percent by mass of Na in the mixture = 31.8 %

Mass fraction of Na in the mixture = 0.318

Evaluating the mass fraction of NaCl in the mixture:

[(x\times 0.3932)+((1-x)\times 0.271)]=0.318

x = 0.385

Percent by mass of NaCl in the mixture will be = (0.385\times 100)=38.5\%

Hence, the percentage by mass of NaCl in the mixture is 38.5 %

4 0
3 years ago
Select the correct answer.
Zarrin [17]

Answer:

C.

Explanation:

A. C - 6 electrons - 1s2 2s2 2p2

B. O - 8 electrons - 1s2 2s2 2p4

C. N - 7 electrons - 1s2 2s2 2p3

D. Be - 4 electrons - 1s2 2s2

4 0
3 years ago
What is the electron configuration for the transition metal ion in each of the following compounds?
Nana76 [90]

Answer:

1)Ni=1s2, 2s2, 2p6, 3s2, 3p6, 4s0, 3d10 called full-filled

2)Cr=1s2, 2s2, 2p6, 3s2, 3p6, 4s1, 3d5 called half-filled

3 0
3 years ago
The liquid that condenses during distillation is called?
AVprozaik [17]

Answer:

the answer is distillate

3 0
3 years ago
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