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jeka94
3 years ago
7

Need help with balancing equations!

Chemistry
2 answers:
kirill [66]3 years ago
8 0

\qquad \qquad\huge \underline{\boxed{\sf Answer}}

Here's the balanced chemical equation for given reaction ~

\sf Fe_2O_3 (s) +3 \:  CO (g) =2 \:  Fe(l) + 3\: CO_2 (g)

As we can see, the Coefficient of Fe (l) is 2

shusha [124]3 years ago
4 0

Answer:

Fe2O3 + 3CO → 2Fe + 3CO2

Explanation:

the numbers in front are the numbers you need

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Orlov [11]

Answer: 1044 kPa

Explanation: To find the total pressure of a system, you add up all the partial pressures. 5.00+4.56+356+678=1043.56, but since you need to account for significant figures it is 1044.

In addition, the amount of significant figures is the number with the smallest amount of decimal places. In this case you have no decimal places, since 356 and 678 have no decimal places. Remember that for the numbers 0-4 you round down and 5-9 you round up.

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What types of mixtures are these? (Homogeneous Mixture Hetergeneous Mixture)
salantis [7]

Explanation: A <u>homogeneous mixture</u> is a solid, liquid, or gaseous mixture that has the same proportions of its components throughout any given sample. The components that make them up are evenly distributed and the appearance of the solution is uniform throughout.

A<u> heterogeneous mixture</u> has components whose proportions vary throughout the sample. The components of a heterogeneous mixture are visible and not uniform throughout. A heterogeneous mixture is simply any mixture that is not uniform in composition.

a) Peanuts and almonds mixed  together in a bowl  : The components(Peanuts and almonds) are visible in a bowl and are not evenly distributed and also not uniform throughout. So this is a 'heterogeneous mixture'.

b) Bucket full of sand and gravel  : The components(sand and gravel) are visible in a bucket and are not evenly distributed and also not uniform throughout. So this is a 'heterogeneous mixture'.

c) Cup of tea and sugar  : The components(tea and sugar) are evenly distributed and the appearance of the solution is uniform throughout. So this is a 'Homogeneous mixture'.

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4 0
3 years ago
A gas sample occupies 8.77 L at 20 degrees Celsius and 3.98 atm. What is
Softa [21]

Answer:

1.45 mol

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Given data

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  • Temperature of the gas (T): 20 °C
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Step 1: Calculate the absolute temperature (Kelvin)

We will use the following expression.

K = \°C + 273.15\\K = 20\°C + 273.15 = 293K

Step 2: Calculate the number of moles (n) of the gaseous sample

We will use the ideal gas equation.

P \times V = n \times R \times T\\n = \frac{P \times V}{R \times T} = \frac{3.98atm \times 8.77L}{\frac{0.0821atm.L}{mol.K}  \times 293K} = 1.45 mol

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Aleksandr [31]

So technicaly the answer is D

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