The mass and volume are thephysical properties that define matter. A matter is anything that can be seen or touched and is said to have mass, volume, density, and occupies space.
A matter is a substance present in the universe that occupies space and is said to have a definite volume and mass. Based on its physical arrangement and composition the matter can be gas, liquid, plasma, or solid.
The mass, volume, and density define the matter and its particles with specific mass and sizes due to the presence of sub-atomic particles like neutron, electron, and proton.
The amount of matter in the universe can be measured in kilograms and grams as mass, and the space occupied by it in cubic meters (m³) as volume.
Therefore, the matter is said to have volume and mass.
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The balanced chemical equation between solid chromium and solid iodine to form solid chromium(III) iodide is: 2 Cr(s) + 3 I₂(s) ⇒ 2 CrI₃(s)
Let's consider the unbalanced equation that occurs when solid chromium reacts with solid iodine to form solid chromium(III) iodide. This is a synthesis or combination reaction.
Cr(s) + I₂(s) ⇒ CrI₃(s)
We will balance it using the trial and error method.
First, we will balance I atoms by multiplying I₂ by 3 and CrI₃ by 2.
Cr(s) + 3 I₂(s) ⇒ 2 CrI₃(s)
Finally, we get the balanced equation by multiplying Cr by 2.
2 Cr(s) + 3 I₂(s) ⇒ 2 CrI₃(s)
The balanced chemical equation between solid chromium and solid iodine to form solid chromium(III) iodide is: 2 Cr(s) + 3 I₂(s) ⇒ 2 CrI₃(s)
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Answer:
2 Cr(s) + 3 I2(s) → 2 CrI3(s)
Explanation:
Reactants:
Solid Chromium
• Chromium is a transition metal with an elemental symbol → Cr
• It can exist as a stable monatomic solid → Cr(s)
Solid Iodine
• Iodine is a non-metal halide of Group 7A → I
• It exists as a diatomic solid → I2(s)
Products:
Chromium(III) iodide
• Chromium, Cr → roman numeral III → +3 charge → Cr3+
• Iodide, I → from group 7A → -1 charge → I-
• When ions combine, their charges or oxidation numbers crisscross to become subscripts
• Cr will have a subscript of 1 from I- → Cr
• I will have a subscript of 3 from Cr3+ → I3
• Subscript 1 is no longer indicated → CrI3(s)
Unbalanced Chemical Reaction: Cr(s) + I2(s) → CrI3(s)
Balancing the chemical reaction:
1. Balance I:
Cr(s) + I2(s) → CrI3(s)
• There are 2 I in the reactant and 3 I in the product side
• Balance I by adding the coefficient 3 in I2 and 2 in CrI2
• There would be a total of 6 I in the reactant and product sides
Cr(s) + 3 I2(s) → 2 CrI3(s)
2. Balance Cr:
Cr(s) + 3 I2(s) → 2 CrI3(s)
• There is 1 Cr in the reactant and 2 Cr in the product side
• Balance Cr by adding the coefficient 2 in Cr(s)
• There would be a total of 2 Cr in the reactant and product sides
2 Cr(s) + 3 I2(s) → 2 CrI3(s)
No because they have their complete octet. They are completely filled and don't need to bond with any other atoms. The full atoms that are happy are the noble gases.
Noble gases have electron shells with full valence. Valence electrons are the atom's outermost electrons and are typically the only electrons involved in chemical bonding.
Noble gases are elements that have completely filled their valence shells, completing their octets. Helium, Neon, Argon, Krypton, Xenon, and Radon are examples of noble gases.
Thus, the elements like He, and Xenon can not form bond with other atoms because they have completely filled orbital so, they are not loosing or gaining any electron from other atoms, that's why they are called “happy, full” elements.
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Answer:
Explanation:
One food Calorie is equal to 1 kilocalorie, that is, 1000 calories. A SI unit of energy is the joule (symbol J), where 1 cal = 4.184 J. The heat produced by chemical reactions is often expressed in kilocalories, as well as in kilojoules (kJ), where 1 kcal = 4.184 kJ.
First, we convert the energy of the photon to Joules. Then, we use the equation for energy of a photon, E=hc/λ, rearranged to solve for λ (wavelength). Substituting the known values into this equation, we can calculate the wavelength of the photon.
The energy of a photon is given in calories, but in physics, it's usually measured in Joules, so we first need to convert our energy to the appropriate unit. Thus, the energy of the photon is 4184 Joules (1,000 calories x 4.184 Joules/calorie).
The energy of a photon is also related to its wavelength through the equation E=hc/λ, where h is Planck's constant (6.63 x 10^-34 J.s) and c is the speed of light (3.00 x 10^8 m/s). By rearranging the equation, we find λ=hc/E. Substituting the given numbers for Planck's constant, the speed of light, and the energy of the photon, we find that λ = (6.63 x 10^-34 J.s)(3.00 x 10^8 m/s) / 4184 J.
Calculating these values, we will arrive at the wavelength of the radiation emitted by this photon.
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Gases were released to the atmosphere.