Answer:
Explanation:
We can use Dalton's Law of Partial Pressures:
Each gas in a mixture of gases equals its pressure independently of the other gases
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Answer:
There are three isotopes of the element oxygen (O): Oxygen 16, 17, and 18. Each isotope of oxygen contains 8 protons, but differs in the number of neutrons. ... Therefore, oxygen 16 has 8 protons and 8 neutrons, oxygen 17 has 8 protons and 9 neutrons, and oxygen 18 has 8 protons and 10 neutrons.
Chemical elements are found in different versions, called isotopes. Isotopes are elements that contain the same amount of protons, but differ in the number of neutrons in their nuclei. For example, there are three isotopes of the element oxygen (O): Oxygen 16, 17, and 18. Each isotope of oxygen contains 8 protons, but differs in the number of neutrons. An isotope number is a shorthand representation of its mass. Because protons and neutrons are roughly equal in mass, an isotope’s number is equal to the sum of its protons and neutrons. Therefore, oxygen 16 has 8 protons and 8 neutrons, oxygen 17 has 8 protons and 9 neutrons, and oxygen 18 has 8 protons and 10 neutrons.
There are two main types of isotopes that geoscientists use to interpret the ancient Earth: stable and unstable isotopes.
Explanation:
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Answer:
12.2 g
Explanation:
Step 1: Given data
Mass of O in KClO₄: 5.62 g
Step 2: Calculate the moles corresponding to 5.62 g of O
The molar mass of O is 16.00 g/mol.
5.62 g × (1 mol/16.00 g) = 0.351 mol
Step 3: Calculate the moles of KClO₄ that contain 0.351 moles of O
The molar ratio of KClO₄ to O is 1:4. The moles of KClO₄ that contain 0.351 mol of O are 1/4 × 0.351 mol = 0.0878 mol
Step 4: Calculate the mass corresponding to 0.0878 moles of KClO₄
The molar mass of KClO₄ is 138.55 g/mol.
0.0878 mol × (138.55 g/mol) = 12.2 g