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ehidna [41]
3 years ago
15

What pressure is required to reduce 57 mL of

Chemistry
1 answer:
AfilCa [17]3 years ago
8 0
At 45.35 c cause of how you multiply the division
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In the balanced reaction below, what is the mole ratio comparing iron (Fe) and oxygen gas (O2)?
zepelin [54]

The given balanced reaction is,

4Fe(s) + 3O_{2}(g) --->2Fe_{2}O_{3} (s)

The stoichiometric coefficients of each element or compound represents the number of moles of that element or compound required for the complete reaction to take place.

The mole ratios of different products and reactants will be:

\frac{Fe}{O_{2}} = \frac{4 mol Fe}{3 mol O_{2}}

\frac{Fe}{Fe_{2}O_{3}} = \frac{4 mol Fe}{2 Fe_{2}O_{3}}

\frac{O_{2}}{Fe_{2}O_{3}} =\frac{3 mol O_{2}}{2molFe_{2}O_{3}}

So the mole ratio comparing iron (Fe) and oxygen gas (O_{2}) is

4 : 3

5 0
3 years ago
Read 2 more answers
Determine the number of protons, neutrons, and electrons for a neutral potassium-41 isotope.
Sphinxa [80]


Atomic number is equal to the number of electrons in a neutral atom. ... Niobium has an atomic number of 41. ... Determine the number of protons, electrons, and neutrons for each isotope described ... Potassium-41. 19
6 0
3 years ago
A small hole in the wing of a space shuttle requires a 15.9 cm2 patch.
Rzqust [24]

The patch area in square kilometers is 1.59*10⁻⁹ km₂

Why?

This is an unit conversion problem. We have to convert from cm² to km². We can do that by knowing that there are 100 cm in 1 m, and 1000 m in 1 km, so 100000 cm=1km. Knowing that we can apply the following conversion factor:

15.9 cm^{2} * (\frac{1 km}{100000 cm} )^{2}=0.00000000159 km^{2}

Now to convert this value to scientific notation, we have to move the decimal point to the right until we get a whole number, and the exponent of the number 10 is going to be the number of spaces we moved to the right (negative), so the final answer is:

0.00000000159 km^{2}=1.59*10^{-9} km^{2}

Have a nice day!

#LearnwithBrainly

8 0
3 years ago
What is density? What does it tell you about the substance?
olya-2409 [2.1K]
How heavy the object is.
7 0
3 years ago
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Why is it impossible for scientists to use macroscopic tools such as scissors to create nanoparticles?.
swat32

Nano particles are very small and can not be seen with eyes measuring between 1 to 100 n m. Because of their small size, they can't be made from macroscopic tools.

<h3>What are particles? </h3>

These refers to those particles whose size lie between 1 to 100 n m. They are extremely small and often can not be seen with the eyes.

Owing to the fact that these particles are very small , they can not be created with very large  substances.

Learn more about particles: brainly.com/question/9220200?

8 0
2 years ago
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