<span>If the pressure increases, the force exerted on the given area also increases.
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Answer:
The alkaline earth metals are six chemical elements in group 2 of the periodic table. They are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).
Explanation:
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We see that the molar ratio of sulfur to water is:
3 : 2
We first compute the moles of water:
moles = mass / Mr
moles = 37.4 / 18
moles = 2.08
By the ratio, moles of sulfur:
3.12
Mr sulfur = 64
mass = 3.12 x 64
mass = 199.7 grams
Answer:
D
Explanation:
If the atom is neutral, the sum of the core and valence electrons is the same as the number of protons, which is the atomic number of the element. So if the sum of the core and valence electrons in a neutral atom equals 25 , that is the number of protons in the atomic nucleus, and the atomic number of the element.
1. B
2. C
3. C
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