Balanced chemical reaction (dissociation) : CaCl₂(aq) → Ca²⁺(aq) + 2Cl⁻(aq).
n(CaCl₂) = 3,5 mol.
From chemical reaction: n(CaCl₂) : n(Ca²⁺) = 1 : 1.
n(Ca²⁺) = 3,5 mol.
From chemical reaction: n(CaCl₂) : n(Cl⁻) = 1 : 2.
n(Cl⁻) = 2 · 3,5 mol.
n(Cl⁻) = 7 mol.
Calcium chloride is salt that completely dissociate in water on calcium cations and chlorine anions.
Answer:
B
Explanation:
since isotopeA has bigger mass number
The condition is called phytoplankton because algae are microscopic, need sunlight and nutrient, water to survive.
<h3>What is phytoplankton?</h3>
Phytoplankton refers to microscopic marine algae and they are also called microalgae.They are similar to terrestrial plants in that they contain chlorophyll and require sunlight in order to live and grow. Most phytoplankton are very buoyant and float in the upper part of the ocean, where sunlight enter the water and they get the sunlight to produce food.
Algae photosynthesized,that is they use sunlight in the presence of chlorophyii and carbondioxide to produce food and oxygen.
Therefore, The condition is called phytoplankton because algae are microscopic, need sunlight and nutrient, water to survive.
Learn more about phytoplankton here.
brainly.com/question/18091244
Answer:
He should add 1.68 grams of silver
Explanation:
Mass of alloy = 14 grams
% of silver = 15%
% of gold = 100 - 15 = 85%
If he decides to reduce the gold to 73%, the percentage of silver will become (100 - 73 = 27%)
Mass of 15% silver = 0.15×14 grams = 2.1 grams
Mass of 27% silver = 0.27×14 grams = 3.78 grams
Amount of silver to add = 3.78 - 2.1 = 1.68 grams
Answer:
The interaction between the tectonic and the hydrologic systems causes constant recycling of the materials of the Earth's crust. Rocks are heated, metamorphosed, melted, weathered, sediment is transported, deposited and lithified, then it may be metamorphosed again in yet another cycle.
Explanation: