You did not provide the statement, however, the most accurate things about atoms is that everything is made out of them in the entire universe, and they consist of protons, electrons, and neutrons. They create all substances in existence.
Answer:
Given theoretical yield of NH3 is 945g.
The actual yield is 598g.
What is the %yield?
Explanation:
%yield of a chemical reaction can be calculated by using the formula:
Substitute the given values in this formula to get the %yield.
Hence, the %yield for the formation of ammonia is ---- 63.3.
1) <span>Carbon can be stored as chemical energy in the cells of the plant or the animal. So, the carbon will stay stored as part of the organic material that makes up the plant or animal until it dies. When a plant or animal dies, it either decomposes and the carbon is released back into the environment; or the organic material of the organism is buried and transformed over millions of years into coal, oil, or natural gas.
2)</span>Another way that carbon is stored for long periods of time is when carbon is used by ocean organisms. Many ocean creatures use calcium carbonate (CaCO3<span>) to make their shells or to make the reef material where coral animals live. When algae die, their organic material becomes part of the ocean sediments, which may stay at the bottom of the ocean for many years. Over millions of years, those same ocean sediments can be forced down into the mantle when oceanic crust is consumed in deep ocean trenches. As the ocean sediments melt and form magma, carbon dioxide is eventually released when volcanoes erupt.</span>
Ni(OH)₂(s) ⇄ Ni²⁺(aq) + 2OH⁻(aq)
Ksp=2.0*10⁻¹⁵
Ksp=[Ni²⁺][OH⁻]²
c=[Ni²⁺]=[OH⁻]/2
Ksp=c×(2c)²=4c³
c=∛(Ksp/4)
c=∛(2.0×10⁻¹⁵/4)=0.01995 mol/L ≈ 0.02 mol/l
Answer:
#a. Na₂CO₃(aq) + 2HCl (aq) → 2NaCl(aq) + CO₂(g) + H₂O(l)
#b. 0.0231 moles CO₂
Explanation:
- Carbonates reacts with acid to produce carbon dioxide and water as products.
- The reaction between sodium carbonate and hydrochloric acid yields sodium chloride, carbon dioxide and water.
The balanced equation for the reaction is;
Na₂CO₃(aq) + 2HCl (aq) → 2NaCl(aq) + CO₂(g) + H₂O(l)
Part B
- We are required to calculate the number of moles of CO₂ if 23.1 ml of Na₂CO₃ were used.
First, we need to calculate the number of moles of Na₂CO₃
- Volume of Na₂CO₃ is 23.1 mL or 0.0231 moles
- Molarity of concentration of Na₂CO₃ is 1.0 M
But;
Number of moles = Volume × Concentration
Therefore;
Moles of Na₂CO₃ = 0.0231 L× 1.0
= 0.0231 moles Na₂CO₃
Second, we can determine the moles of CO₂ produced.
- From the equation 1 mole of Na₂CO₃ reacts with the acid to produce 1 mole of CO₂.
This means, the mole ratio of Na₂CO₃ : CO₂ is 1 : 1
Therefore; Moles of CO₂ produced is 0,0231 moles
= 0.0231 moles CO₂