Answer:
Copper, platinum and also mercury
Ultraviolet as ultraviolet light waves are around 420 nm like stated in the photo
Answer:
2.288 Moles of NH₄NO₃
Explanation:
The Balance chemical equation is as follow:
(NH₄)₂CO₃ + 2 HNO₃ → 2 NH₄NO₃ + H₂O + CO₂
To solve this problem we will do following steps:
Finding moles of Ammonium Carbonate:
As we know,
Moles = Mass / M.Mass
So,
Moles = 110 g / 96.08 g/mol
Moles = 1.144 moles
Calculating moles of Ammonium Nitrate:
According to balance chemical equation;
1 mole of (NH₄)₂CO₃ produces = 2 moles of NH₄NO₃
So,
1.144 moles of (NH₄)₂CO₃ will produce = X moles of NH₄NO₃
Solving for X,
X = 2 moles × 1.144 moles ÷ 1 mole
X = 2.288 moles of NH₄NO₃
Answer:
C) F
Explanation:
Valence electrons are the electrons present in the outermost shell of an atom and have the highest energy level of an atom whereas electrons at ground state or lower orbitals have less potential energy.
This is so because <u>orbitals nearby nucleus are strongly bonded with the atomic nucleus and have less energy than an outermost shell.</u>
So, the potential energy states of an atom depend on the number of orbitals. In the given options fluorine with atomic number 9 has less number of orbitals that is 2 orbitals and valence electrons will be present in second orbitals, so fluorine will have the lowest average potential energy states.
Hence, the correct option is "C) F".
<u>Answer:</u> The mass of the nitrous oxide gas produced is 0.011 kg.
<u>Explanation:</u>
To calculate the mass of the gas, we use the formula:
![Density=\frac{Mass}{Volume}](https://tex.z-dn.net/?f=Density%3D%5Cfrac%7BMass%7D%7BVolume%7D)
We are given:
Specific density of the gas = ![1.98kg/m^3](https://tex.z-dn.net/?f=1.98kg%2Fm%5E3)
Mass of the gas = ? kg
Volume of the gas =
(Conversion Factor:
)
Putting values in above equation, we get:
![1.98kg/m^3=\frac{Mass}{0.0056m^3}](https://tex.z-dn.net/?f=1.98kg%2Fm%5E3%3D%5Cfrac%7BMass%7D%7B0.0056m%5E3%7D)
![Mass=0.011kg](https://tex.z-dn.net/?f=Mass%3D0.011kg)
Hence, the mass of the nitrous oxide gas produced is 0.011 kg.