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seraphim [82]
4 years ago
12

How can I write the formula for strontium fluoride?

Chemistry
1 answer:
quester [9]4 years ago
4 0
First thing, you need to know what this molecule is made of. 
The First atom is the Strontium Sr (For more information, used usually as a substitute of the calcium in the human body).
The Second Atom is made of 2 Fluoride F2 (because it chemical name is Strontium difluoride).
Then, you join them together and Get SrF_2
And for more information, Strontium fluoride is usually used as an optical material.

Hope this Helps :)
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Calculate the volume of 12.0 g of helium at 100° C and 1.2 atm.
satela [25.4K]

Answer:

the answer I think is 76.5L

7 0
3 years ago
ASAP - Thank you
ANTONII [103]

Answer:

Covalent bonds

Explanation:

Atoms with greatly differing electronegativity values are expected to form..... ... When two atoms each need additional electrons to fill their valence shells, but neither is electronegative enough to steal electrons from the other, they can form another kind of chemical bond called a covalent bond.

4 0
3 years ago
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Amateur radio operators in the United States can transmit on several bands. One of those bands consists of radio waves with a wa
zloy xaker [14]

Answer:

1.5×10⁷ Hz

Explanation:

From the question given above, the following data were obtained:

Wavelength of radio wave (λ) = 20 m

Frequency (f) =?

Frequency and wavelength of a wave are related by the following equation:

v = λf

Where:

'v' is the velocity of electromagnetic wave.

'λ' is the wavelength

'f' is the frequency.

With the above formula, we can obtain the frequency of the radio wave as illustrated below:

Wavelength of radio wave (λ) = 20 m

Velocity (v) = 3×10⁸ m/s

Frequency (f) =?

v = λf

3×10⁸ = 20 × f

Divide both side by 20

f = 3×10⁸ / 20

f = 1.5×10⁷ Hz

Thus the frequency of the radio wave is 1.5×10⁷ Hz

5 0
3 years ago
Describe two ways in which humans have<br> negatively affected groundwater.
ludmilkaskok [199]

Answer: Stressors

Explanation:

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4 0
3 years ago
Iron(III) oxide is formed when iron combines with oxygen in the air. How many grams of Fe2O3 are formed when 33.4 g of Fe reacts
konstantin123 [22]

    The grams of  Fe₂O₃   that are formed is  47.68 g

<u><em>calculation</em></u>

Step 1: write   the equation for reaction

4 Fe +3O₂ → 2 Fe₂O₃

Step 2: find  the  moles  of Fe

moles = mass÷  molar mass

 = 33.4 g÷55.8 g/mol =0.5986 moles

Step 3 : use the mole ratio to determine the moles of Fe₂O₃

That is  from  equation above Fe:Fe₂O₃  is 4:2 therefore the moles of Fe₂O₃ is  =  0.5986 moles x 2/4 =0.2993 moles

Step 4 : find the mass  of Fe₂O₃

mass = mass x molar mass

The molar mass of Fe₂O₃  = (55.8 x 2 +(15.9 x3) = 159.3 g/mol

mass is therefore =  0.2993 moles x 159.3 g/mol =47.68 g

4 0
3 years ago
Read 2 more answers
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