1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Aleks04 [339]
2 years ago
10

What mass of Cu(s) would be produced if 0.40 mol of Cu2O(s) was reduced completely with excess H2(g) ?

Chemistry
1 answer:
yan [13]2 years ago
4 0

Answer:

50.8g

Explanation:

Given parameters:

Nubmer of mole of Cu₂O = 0.4mol

Unknown:

Mass of Cu produced = ?

Solution:

The balanced reaction equation:

           Cu₂O  +  H₂   ⇄ 2Cu + H₂O

From the reaction, we know that:

            1 mole of Cu₂O produced 2 moles of Cu

             0.4 mol of Cu₂O would give 0.8mol of Cu

Now we know the number of moles of Cu produced because the limiting reactant here is Cu₂O. It was used up in the reaction in which the hydrogen gas was in excess.

To find the mass of Cu produced, we use the equation below :

              Mass of Cu = Number of moles of Cu x molar mass of Cu

Molar mass of Cu = 63.5gmol⁻¹

              Mass of Cu = 0.8 x 63.5 = 50.8g

You might be interested in
What causes the change in pressure when a basketball is pumped up?
Andru [333]
Change in the amount of volume left inside the basketball for the remaining air coming in
3 0
3 years ago
Draw the most reasonable lewis structure of a molecule that contains a n atom, a c atom, and a h atom. include any formal charge
faust18 [17]
H:C:::N: (hydrogen cyanide). All atoms have formal charge of 0.
4 0
3 years ago
The international treaty which provides operational rules on reducing greenhouse gas emissions is called:______
Ierofanga [76]

Answer:

Paris climate agreement of 2015

Explanation:

In the year 2015, global leaders seeking to join forces to combat the ever increasing emissions of green house gases which is having a bad influence on our prevailing world climate met in Paris in 2015, although the treaty became effective in the year 2016.

There are 195 signatories to the treaty. The Paris Agreement's long-term temperature goal is to keep the increase in global average temperature to well below 2 °C above pre-industrial levels; and to pursue efforts to limit the increase to 1.5 °C, recognizing that this would substantially reduce the risks and impacts of climate change.

6 0
2 years ago
How many atoms of oxygen (O) are in one formula unit of Mg(NO3)2?
miv72 [106K]
We may use the molecular formula of the compound to determine the number of oxygen atoms in one formula unit. The formula unit is:
Mg(NO₃)₂
Here, we can see that there are two nitrate ions in each mole, and each mole of nitrate ion contains three oxygen atoms. Thus, there are 6 oxygen atoms in each formula unit of magnesium nitrate.
5 0
3 years ago
Read 2 more answers
The molarity of a 2 liter aqueous solution that contains 222.2 grams of dissolved calcium chloride ( CaCl2), expressed with two
sveta [45]

Answer:

The answer to your question is 1 M

Explanation:

Data

Molarity = ?

mass of CaCl₂ = 222.2 g

Volume = 2 l

Process

1.- Calculate the molar mass of CaCl₂

CaCl₂ = 40 + (35.5 x 2) = 40 + 71 = 111 g

2.- Calculate the moles of CaCl₂

                    111g of CaCl₂ ---------------- 1 mol

              222.2 f of CaCl₂  ----------------  x

                      x = (222.2 x 1) / 111

                      x = 222.2 / 111

                      x = 2 moles

3.- Calculate the Molarity

Molarity = moles / Volume

-Substitution

Molarity = 2/2

-Result

Molarity = 1

3 0
3 years ago
Other questions:
  • Methanol burns in oxygen to form carbon dioxide and water. find delta h
    8·1 answer
  • An average copper penny minted in the 1960s contained about 3.000 g of copper. how much chalcopyrite had be mined to produce 100
    6·2 answers
  • Baking a cake is an example of -
    7·1 answer
  • 3. Under certain conditions, oxygen gas (O2) has a density of 0.00134 g/mL. Find the volume occupied by 250.0 g of O2 under the
    5·2 answers
  • How to solve the equation for the value of X
    12·1 answer
  • How to combine elements to make compounds?
    13·1 answer
  • Which of the following is the balanced equation
    9·1 answer
  • Chlorine and Hydrogen
    12·1 answer
  • Help me plz.....!!!!!!
    9·1 answer
  • What elements in a reaction is likely to react just like Zinc?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!