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3 years ago

How many double bonds does CCL2H2 have?

1 answer:

4 0

None. Both chlorines and both hydrogens are single-bonded to the central carbon atom; the molecule is comprised of four single bonds and no double bonds.

Hope this helps!

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Write the ions present in a solution of na3po4. express your answers as chemical formulas separated by a comma. offset subscript

spin [16.1K]

Sodium/natrium is a metal from first column group so it should have one 1+ charge. Phosphate ion has 3- charge. That is why there 3 natrium ion for 1 phosphate ion when this molecule is dissolved in water. The ion formula would be:

(Na) $_{3}$ (PO $_{4}$ ) ==> 3 Na $^{1+}$ + PO $_{4} ^{3-}$

6 0

4 years ago

35 points to help me i wrote the definition up top for this i just need help using it in a Example/Sentence

dmitriy555 [2]

In order for a cellular device to operate, it requires battery power, otherwise known as energy.

or you can do this

Us humans consume food so that we can have the sufficient energy to accomplish tasks.

5 0

3 years ago

What is the osmolarity of .00001 grams (0.1 mg%) of ethanol (does not dissociate) in one liter?

MrMuchimi

Explanation:

As it is known that non-electrolytes do not dissociate. Therefore, molarity of such a solution is equal to the osmolarity of solution.

As, molar mass of ethanol = 46.07 g/mol

Therefore, no. of moles of ethanol will be calculated as follows.

No. of moles = $\frac{mass}{\text{molar mass}}$

= $\frac{0.00001 g}{46.07 g/mol}$

= $2.17 \times 10^{-7}$ mol

As, molarity is moles of solute in liter of solution. Hence, molarity of ethanol is as follows.

Molarity = $\frac{\text{no. of moles}}{volume}$

= $\frac{2.17 \times 10^{-7} mol}{1 L}$

= $2.17 \times 10^{-7}$ mol/L

Since, for the given solution Molarity = osmolarity

Thus, we can conclude that osmolarity of .00001 grams (0.1 mg%) of ethanol in 1 L is $2.17 \times 10^{-7}$ osmol/L.

8 0

3 years ago

Both obsidian and pumice are formed from which of the following ?

Mashutka [201]

Answer:

option D= volcanoes

Explanation:

Obsidian:

It is igneous rock. It is made when molten rock material cool very rapidly in such a way that atoms could not arrange themselves and acquire amorphous form. It is also called mineraloid.

1. Mostly it is found in black color but it could be present in green or brown color.

2. In the form of glass obsidian are unstable and start to crystallize.

3. Obsidian are commonly found in New Zealand, Hungry, Russia, Canada, Italy, Argentine, Japan, Chile, Kenya, Peru and United States.

4. older obsidian can not be found because these glassy rocks destroyed very rapidly.

5. Obsidian are used in surgical tools for cutting.

6. obsidian are also used in jewelry.

Pumice:

pumice is volcanic rock. it is formed from the lava having high amount of gases and water content. the gas escape and frothy lava cool very rapidly and form very lighter rock material, called pumice.

1. it is lighter in color because of high content of silica.

2. its crushing material produce fine powder, called volcanic ash.

3. its density is very low that's way it floats on the surface of water.

4. it is used in the manufacturing of cement and also in pencil erasers.

5. it is found in Greece, Italy, Chile, Turkey, Russia , Tran, Syria ans United States.

6 0

3 years ago

Classify these salts as acidic, basic, or neutral. kcl, nh4br, k2co3, nacn, liclo4? this is what i put but got it wrong: nh4br =

olchik [2.2K]

I'll just list down the acidic, basic, and neutral salts.

ACIDIC
THE CATION: is the conjugate acid of a weak base
THE ANION: Conjugate Base of A Strong Acid

Ammonium Sulfate - (NH₄)₂SO₄
Ammonium Chloride - NH₄Cl
BASIC
THE CATION: comes from the cation of a strong Base (i.e. Na+, K+, Li+)
The Anion: comes from the conjugate base of a weak acid

Sodium Acetate - CH₃COONaSodium Phosphate - Na₃PO₄
Calcium Acetate - (CH₃COO)₂Ca
NEUTRAL
THE CATION: comes from a strong base
THE ANION: comes from a strong acid

Sodium Nitrate - NaNO₃
Barium Chloride - BaCl₂Potassium Chloride - KCl

5 0

4 years ago