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RoseWind [281]
4 years ago
6

Write the chemical formula for gallium an IOdine

Chemistry
1 answer:
Galina-37 [17]4 years ago
7 0
That would be GaI3. :)
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The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is
Rudik [331]

Answer:

1.  C. helium

2.  D. oxygen and acetylene

3.  B.  deliquescence

4.  C.  cutting very hard surfaces

5.  B.  3.5%

Explanation:

5 0
3 years ago
What is the mass of a liter of water?
kumpel [21]

Answer:

one kilogram is the answer

8 0
3 years ago
How many positively charged nucleons are in an atom of ^50 24Cr?
lorasvet [3.4K]

Answer:

positively charged nucleons are 24

Explanation:

Given element:

           ₂₄⁵⁰ Cr

The superscript before the symbol of the atoms is mass number

The subscript before the symbol is the atomic number

  Cr is the symbol of the atom

Now,

Atomic number is the number of protons in an atom.

The protons are the positively charged particles in an atom.

For this specie, the positively charged nucleons are 24

5 0
3 years ago
A molecule is known to have a molar absorptivity of 18,650 at a certain wavelength. A spectrometer is tuned to this wavelength a
iren2701 [21]

Answer:

17,932.69 g/mol is the molecular weight of the substance.

Explanation:

Using Beer-Lambert's law :

Formula used :

A=\epsilon \times c\times l

where,

A = absorbance of solution = 1.04

c = concentration of solution =?

l = length of the cell = 1 cm

\epsilon = molar absorptivity of this solution = 18,650 M^{-1} cm^{-1}

Now put all the given values in the above formula, we get the molar absorptivity of this solution.

1.04=18,650 M^{-1} cm^{-1}\times c)\times (1cm)

c = 5.576\times 10^{-5} M

Concentration=\frac{\text{Mass of compound}}{\text{Molecular mass of compound}\times V}

V = Volume of the solution in L

Molecular weight of the substance = x

V = 100 mL = 0.1 L

Mass of the substance = 100 mg = 0.1 g

5.576\times 10^{-5} M=\frac{0.1 g}{x\times 0.1 L}

x = 17,932.69 g/mol

17,932.69 g/mol is the molecular weight of the substance.

6 0
3 years ago
What is the name of this acid: H3P ?
fiasKO [112]

Answer:

phosphoric acid

Explanation:

7 0
3 years ago
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