The response is:
No, the equation is not balanced. Neither the Nitrogen (N) nor the Hydrogen (H) are in balance!
Here's the reasoning:
⓵ A properly balanced chemical equation means that the quantity of atoms on the reactants side matches that on the products side.
→ The equation lacks balance because there are 2 Nitrogen atoms and 2 Hydrogen atoms on the reactants side. In contrast, on the products side, there is only 1 Nitrogen atom and 4 Hydrogen atoms. Thus, the number of atoms on each side is not consistent!
Hopefully, this clarification is helpful; feel free to reach out if you have any further questions! ☻
Answer:
Can you rank the following chemical substances in order of their absolute entropies (So) from lowest (1) to highest (5) at a temperature of 298 K?
a. Al (s)
b. H2O (l)
c. HCN (g)
d. CH3COOH (l)
e. C2H6 (g)
Explanation:
Entropy quantifies the level of disorder within a system.
In solids, the entropy is significantly lower compared to liquids and gases.
The typical order of entropy is:
solids < liquids < gases
In the substances listed, liquid water notably exhibits strong intermolecular hydrogen bonding.
This results in water having comparatively lower entropy.
Next in line is acetic acid.
Among the gaseous components, ethane has higher entropy than HCN due to its weaker intermolecular interactions.
HCN involves some hydrogen bonding.
Thus, the order of entropy is:
Al(s) < CH3COOH (l) < H2O(l) < HCN(g) < C2H6(g)
The density of the cube is calculated as follows: 38.234 kg/m³ or 0.038234 g/mL. Explanation: We begin with the formula for volume, which is expressed as m³ where 'm' indicates the side of the cube. Given that the cube’s side is 0.65 m and its mass measures 10,500 grams, this converts to 10.5 kg (as 1000 grams = 1 kg). The volume is calculated as (0.65)³, equaling 0.274625 m³. Density is determined by dividing mass by volume, leading to a density of 10.5 kg divided by 0.274625, resulting in 38.234 kg/m³. To convert, 1 kg/m³ equals 0.001 g/mL, thus resulting in 0.038234 g/mL.
Answer: The complete balanced chemical equation is,
Explanation:
A chemical equation represents the reactants on the left and the products on the right, separated by a right-pointing arrow indicating the reaction.
This representation includes the phases of the substances and uses subscripts and superscripts for numbers.
For the reaction given, the balanced chemical equation with phases is:
mass of Helium = moles of Helium x molar mass of Helium. Moles of Helium equal the volume of Helium divided by 22.4 dm^3/mol, yielding 7.00 x 10^2 / 22.4 = 31.25 mol. Consequently, mass of Helium is found by multiplying the amount of moles by the molar mass, resulting in 31.25 mol x 4 g/mol equaling 125 g.
