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lisov135 [29]
2 years ago
9

How many parts does CsF ( Cesium Fluoride ) have?

Chemistry
1 answer:
san4es73 [151]2 years ago
7 0
Good luck on this one brp
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What is the mass of 42.0 mL of a liquid with a density of 1.65 g/mL?
OverLord2011 [107]

Answer:

The answer is

<h2>69.30 g</h2>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

volume = 42 mL

density = 1.65 g/mL

The mass is

mass = 1.65 × 42

We have the final answer as

<h3>69.3 g</h3>

Hope this helps you

5 0
3 years ago
To find the formula of a compound composed of iron and carbon monoxide, Fex(CO)y, the compound is burned in pure oxygen, an reac
Anarel [89]

Answer:

The empirical formula is: Fe(CO)₅

Explanation:

According the global reaction:

Feₓ(CO)y + O₂ → Fe₂O₃ + CO₂

You should calculate Fe₂O₃ and CO₂ moles, thus:

0,799 Fe₂O₃ grams  × \frac{1 mole}{159.69 Fe2O3 g} = 5,00×10⁻³ Fe₂O₃ moles

2,200 CO₂ grams  × \frac{1 mole}{44,01 CO2 g} = 5,00×10⁻²CO₂ moles

The ratio between Fe₂O₃ moles and CO₂ moles is 1:10. Thus ratio between x and y must be 1:5 because Fe₂O₃ has 2 irons but CO₂ has just one carbon.

Assuming the formula is Fe₁(CO)₅ the molecular weight is 195,9 g/mol. Thus:

1,959 Fe(CO)₅ grams  × \frac{1 mole}{195,9 Fe(CO)5 g} = 1,00×10⁻² Fe(CO)₅ moles

Thus, assuming 1,00×10⁻² moles as basis for calculation, the global reaction is:

1 Fe(CO)₅ + ¹³/₂O₂ → ¹/₂ Fe₂O₃ + 5 CO₂

With this balanced equation the moles produced have sense, thus, the empirical formula is: Fe(CO)₅

I hope it helps!

8 0
3 years ago
A balloon occupies 175 cm at 25.0 C. What volume will it occupy at 42.5 °C?
patriot [66]

175 cm³ instead of 175 cm.

Answer:

297.5 cm³

Explanation:

From the question;

Initial volume; V1 = 175 cm³

Initial temperature; T1 = 25°C

Final temperature; T2 = 42.5°C

From Charles law we can find the volume V2 from the equation;

V1/T1 = V2/T2

Making V2 the subject gives;

V2 = V1 × T2/T1

V2 = (175 × 42.5)/25

V2 = 297.5 cm³

4 0
3 years ago
3.
Katena32 [7]

Answer:

it's A endothermic its when two objects rub each other to form heat this is also known as friction force

6 0
3 years ago
What is the shape of graphite​
VashaNatasha [74]

Answer:

The molecular formula lists the symbol of each element within the compound followed by a number (usually in subscript). The letter and number indicate how many of each type of element are in the compound. If there is only one atom of a particular element, then no number is written after the element.

7 0
3 years ago
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