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lyudmila [28]
3 years ago
15

How many grams of CO are needed with an excess of Fe2O3 to produce 35.0 g Fe?

Chemistry
1 answer:
stepan [7]3 years ago
7 0
Carbon ii oxide (CO) acts as a reducing agent such that it reduces oxides of less reactive metals in the reactivity series such as lead, copper and zinc.
Therefore a reaction between carbon ii oxide and iron ii oxide will be;
Fe2O3 (s) + 3CO (g) = 3CO2 (g) + 2Fe (s)
 The mass of 35 g of Fe contains  0.625 moles  ( 35 g ÷56 g)
Using the mole ratio of CO : Fe which is 3:2 , we can get the number of mole of CO needed,
 That is 0.625 × 3/ 2 = 0.9375 moles
Therefore, 0.9375 moles are required, but 1 mole of CO = 28 g,
the mass of CO required will therefore be 0.9375 × 28 = 26.25 g
thus 26.25 g of CO are needed

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It is usually defined as the change in concentration per unit time:

Δ(concentration)/Δt

The units are (moles per litre) per second.

In symbols, the units are mol/(L·s) or mol·L^-1 s^-1.

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To what are wax susceptible?
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1(a). What is the solubility of calcium chloride (CaCl2) at 5°C?
In-s [12.5K]

Answer:

60 g/100 g water  

Explanation:

Find 5 °C on the horizontal axis.

Draw a line vertically from that point until you reach the solubility curve for CaCl₂.  

Then draw a horizontal line from there to the vertical axis.

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3 years ago
Calculate the volume of the gas, in liters, if 1.35 mol
Alina [70]

Answer:

22.8 L

Explanation:

Step 1: Given data

  • Moles of the gas (n): 1.35 mol
  • Pressure of the gas (P): 1.30 atm
  • Temperature (T): -6°C
  • Ideal gas constant (R): 0.0821 atm.L/mol.K

Step 2: Convert "T" to Kelvin

We will use the following expression.

K = °C + 273.15 = -6 + 273.15 = 267 K

Step 3: Calculate the volume of the gas

We will use the ideal gas equation.

P × V = n × R × T

V = n × R × T / P

V = 1.35 mol × (0.0821 atm.L/mol.K) × 267 K / 1.30 atm

V = 22.8 L

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A chemical reaction can be reversed if?
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Chemical reaction can be reversed if the energy of the reactants is less than the activation energy threshold.

<h3>What is a reversible reaction?</h3>

A reversible reaction is a reaction in which the conversion of reactants to products and the conversion of products to reactants occur simultaneously.

<h3>Conditions for reversible reaction</h3>

In equilibrium reaction, the activation energy of the forward reaction is more than that of backward reaction which causes bond breakage of the reactants.

Activation energy = (Threshold energy) - (Internal energy of the reactants)

Thus, a chemical reaction can be reversed if the energy of the reactants is less than the activation energy threshold.

Learn more about reversible reaction here: brainly.com/question/16614855

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4 0
2 years ago
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