Answer:
-1464 kJ/mol
Explanation:
The balanced equation for the reaction is given as;
C2H4(g)+3O2(g)→2CO2(g)+2H2O(l) ΔH∘1=?
The enthalpy of the reaction is given by the equation;
Enthalpy of reaction = Enthalpy of products - Enthalpy of reactants
Products:
2CO2(g)+2H2O(l)
Enthalpy of Products = 2 (−394) + 2(−286)
Enthalpy of Products = -1360 kJ/mol
Reactants:
C2H4(g)+3O2(g)
Enthalpy of Reactants = 2 (52) + 3(0)
Enthalpy of Reactants = 104 kJ/mol
Enthalpy of Reaction = -1360 - 104 = -1464 kJ/mol
Th picture shows a model of cell.
What is the main function of the part labeled z in the model?
A. To hold and protect the cell's DNA
B. To store food and other materials inside the cell
C. To use energy from sunlight to make sugars
D. To provide the cell with energy for its activities
Answer:
The answer is the D. That's the Mitochondrion.
Explanation:
How many moles of copper are needed to react with sulfur to produce 0.25 moles of copper (i) sulfide according to the following reaction: 2 Cu + S = Cu2S
Answer:
0.5 mole
Explanation:
The equation for the reaction is given below:
2Cu + S —> Cu2S
We can calculate the mole of copper (Cu) needed to react with sulphur (S) to produce 0.25 mole of copper(I) sulfide (Cu2S) by doing the following:
From the balanced equation above,
2 moles of Cu reacted to produced 1 mole of Cu2S.
Therefore, Xmol of Cu will react to produce 0.25 mole of Cu2S i.e
Xmol of Cu = 2 x 0.25 = 0.5 mole
Therefore, 0.5 mole of copper (Cu) will react with sulphur (S) to produce 0.25 mole of copper(i)sulfide (Cu2S)
__Is when water changes from a solid to a liquid
When water changes from a solid to a liquid it is called melting.
Solid ice melts and forms into a liquid: water.
If this incorrect, please, don't refrain to tell me. Thank you.
Joy mixes one cup of sugar and one cup of lemon juice into three cups of water. The solvent in this recipe is the?
Answer: Water is the solvent in this recipe.
Explanation: A solvent is " a molecule that has the ability to dissolve other molecules". Lemon juice and sugar are solutes.
15POINTS
What is acceleration? O A. A change in speed B. A change in speed or direction O C. A change in force O D. A change in force or energy
A
acceleration is change in speed
Answer:
A. Change in speed
why do we use anticides
Answer:
If you mean antacids (bases) it to neutralise stomach acids that have been disturbed.
Explanation:
Which of the following is a neutralization reaction?
a
SiCl4 + 4 H2O → H4SiO4 + 4 HC
b
HCl + NaOH → NaCl + H2O
c
6 CO2 + 6 H2O → C6H12O6 + 6 O2
d
2Al + 6HCl → 2AlCl3 + 3H2
Answer:
B
Explanation:
B, Hcl + NaoH = NaCl + H2O
A particle of matter contains six protons seven neutrons and six electrons the particle must be
Isopropanol is a solvent that is liquid at room temperature. How would isopropanol behave when poured out of its container onto a table
If you had a bottle that contained 5.69x1024 molecules of water, how many
moles of water does the bottle hold? Please show the solution :))
Helllppp meee!! Please
Answer:
a bus moves on a straight road then makes a right turn
Explanation:
yes