The law of conservation holds that mass can not be destroyed but can only take on different forms. So if 5 g of water becomes a gas it becomes 5 g of water vapor. The mass of the liquid water is simply transferred into the mass of the newly formed water vapor.
Answer:
1.05 mol
Explanation:
Step 1: Given data
- Molarity of sulfuric acid (M): 1.325 M (1.325 mol/L)
- Volume of solution (V): 395 mL (0.395 L)
Step 2: Calculate the moles of sulfuric acid (n)
We will use the following expression.
M = n/V
n = M × V
n = 1.325 mol/L × 0.395 L = 0.523 mol
Step 3: Calculate the moles of H⁺
H₂SO₄ dissociates completely according to the following equation.
H₂SO₄ ⇒ 2 H⁺ + SO₄²⁻
The molar ratio of H₂SO₄ to H⁺ is 1:2. The moles of H⁺ are 2/1 × 0.523 mol = 1.05 mol.
Answer:
D. The plates are different in size from the landmasses.
Explanation:
- The tectonic plates that are also called lithospheric plates are very massive and irregular-shaped rocks that are composed of both the continental and the oceanic lithosphere and they may vary from a few hundred to thousands of square km.
Answer:
Lewis structure in the attached image.
Explanation:
To draw the Lewis structure of H₂SO₄, we need to consider the octet rule: atoms gain, lose or share electrons to have 8 electrons in their valence shell. Hydrogen is an exception because its valence shell is complete with 2 electrons (duet). H, S and O are nonmetals, so they form covalent bonds to complete their valence shell, that is, they share pairs of electrons.
- S has 6 valence electrons, so it has to share 2 pairs of electrons to reach the octet.
- O has 6 valence electrons, so it has to share 2 pairs of electrons to reach the octet.
- H has 1 valence electron, so it has to share 1 pair of electrons to reach the duet.
In the attached image is the resulting Lewis structure.
When a warm air mass and a cold air mass meet and cant move its called "stationary front"
