How many moles of aluminum oxide can be made if 5.23 mol Al completely react
Answers
Answer:
2..615moles of Aluminium oxide
Explanation:
4Al + 3O2 -------> 2Al2O3
(5.23mol Al)×(2molaAl2O3) /(4molAl)
2.615moles of Aluminium oxide
(5.23mol Al)(2mol Al2O3/4mol Al) = 2.62mol Al2O3
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Doing science, and having a bit of trouble.please helpthank you so much!
Which structure is found in a plant cell but not in a animal cell is ita. chloroplast b. cell membrane or c. ribosome
(1) The concentration of H2(g) increases and the concentration of N2(g) increases.
(2) The concentration of H2(g) decreases and the concentration of N2(g) increases.
(3) The concentration of H2(g) decreases and the concentration of NH3(g) decreases.
(4) The concentration of H2(g) decreases and the concentration of NH3(g) increases.
Answers
When the temperature is decreased, the concentration of H2(g) decreases and the concentration of NH3(g) increases.
What is equilibrium?
The term equilibrium refers to the point when the rate of forward reaction is equal to the rate of reverse reaction. In that case, the reaction has attained a dynamic equilibrium.
Now, when the temperature is decreased, the concentration of H2(g) decreases and the concentration of NH3(g) increases.
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N2(g) + 3H2(g)<==>2NH3(g) + energy, the changes that occur when the temperature of this system is decreased is that concentration of H2(g) decreases and the concentration of NH3(g) increases. The answer is number 4. The rest of the choices do not answer the question above.
Answers
Answer;
- It will sink because soap disrupts the inter-molecular forces of water
Explanation;
-A light twig is barely floating on the surface of water. if a drop of dish washing detergent is added near it then it will sink because soap disrupts the inter- molecular forces of water.
-The twig was initially floating due to the force of surface tension created by the inter-molecular forces between water molecules. When soap is added to the water, the twig will be driven to sink by the disruption of the water's surface tension. This is because soap is a surfacant that is amphipathic and thus disrupts the inter-molecular forces between water molecules that are responsible for surface tension.
Answers
Answers
Answer:
27.9 g
Explanation:
CsF + XeF₆ → CsXeF₇
First we convert 73.1 g of cesium xenon heptafluoride (CsXeF₇) into moles, using its molar mass:
- Molar mass of CsXeF₇ = 397.193 g/mol
- 73.1 g CsXeF₇ ÷ 397.193 g/mol = 0.184 mol CsXeF₇
As 1 mol of cesium fluoride (CsF) produces 1 mol of CsXeF₇, in order to produce 0.184 moles of CsXeF₇ we would need 0.184 moles of CsF.
Now we convert 0.184 moles of CsF to moles, using the molar mass of CsF:
- Molar mass of CsF = 151.9 g/mol
- 0.184 mol * 151.9 g/mol = 27.9 g
NH4NO3(s): ∆Hf = -365.56 kJ ∆Sf = 151.08 J/K.
NH3(g): ∆Hf = -46.11 kJ ∆Sf = 192.45 J/K.
H2O(l): ∆Hf = -285.830 kJ ∆Sf = 69.91 J/K.
O2(g): ∆Hf = 0.00 kJ ∆Sf = 205 J/K.
Answers
NH3: ∆G = -46.11x10^3 - (298)(192.45) = -103460.1 J
O2: ∆G = 0 - (298)(205) = -61090 J
NH4NO3: ∆G = -365.56x10^3 - (298)(151.08) = -410581.84 J
H2O: ∆G = -285.830x10^3 - (298)69.91) = -306663.18 J
∆Grex = ∆Gproducts - ∆Greactants
∆Grex = (-410581.84 + -306663.18) - (-103460.1/2 + -61090/2)
∆Grex =-634969.97 J/mol = -634.97 kJ/mol
use less nonrenewable resources.
B
use more nonrenewable resources.
с
drive cars that only burn fossil fuels.
D
use less dangerous ways to find oil.
Answers
One way to slow down the global climate change is to reduce the use of nonrenewable sources such as fossil fuels because, they release harmful gases that leads to global warming.
What is global warming?
The increase in the overall atmospheric temperature is called global warming. Global warming is mainly caused by green house gases such as carbon dioxide, methane, oxides of nitrogen etc.
Green house gases intensely absorbs heat energy that radiates out from earth. Thus they trap the temperature in the atmosphere make the planet warmer.
Nonrenewable energy sources such as nuclear reactions, fossil fuels, coal etc. coal and petroleum are highly rich in toxic gases and burning them releases these gases including carbon dioxide and methane to the atmosphere increase the rate of global warming.
Therefore, reducing the use of nonrenewable resources is a good way to slow down the global climate change.
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Because it will slow down global climate change