Answer: B. observed wavelength of light
Explanation: The relation of Planck's constant relating the Joules of energy absorbed/released by matter is usually used to determine the energy of the photon. The mathematical expression is -
E= h c /
Thus as we can observe that the energy is directly proportional to the speed of light and inversely proportional to the wavelength of the light.
Thus , we can say that Planck's constant relates the Joules of energy absorbed/released by matter to the observed wavelength of light.
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Given:
Molar mass of CO2 = 44.01g/mol
3.21x10^25 molecules of CO2
Required:
Mass of CO2
Solution:
Avogadro’s number states that for every mole of atom, there are 6.023x10^23 units of atom. The units may be formula units, atoms. In here, you need to divide 3.21x10^25 molecules of CO2 to 6.023x10^23 molecules per mole.
3.21x10^25 molecules of CO2 / 6.023x10^23 molecules per mole = 53.30 moles CO2
53.30 moles CO2 (44.01g/mol CO2) = 2346 g of CO2
Answer:
Endothermic, because heat is absorbed.
Explanation:
The first element of the periodic table is hydrogen (H), and the second element is helium (He).
Hydrogen, with atomic number 1, is the first element in the periodic table. It is the lightest and the most abundant element in universe. Hydrogen is a colorless, odorless gas and is the building block for all other elements.
Helium, with atomic number 2, is the second element in the periodic table. It is also a gas, but unlike hydrogen, it is inert and does not readily react with other elements. Helium is known for its low density, which makes it lighter than air, and it is commonly used for filling balloons and as a cooling medium in various scientific and industrial applications.
So, the first element of the periodic table is hydrogen (H), and the second element is helium (He).
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Answer:
the answer is 3
Explanation:
2 mol of potassium chlorate x = 3
also just did it on edge