The best answer is A) <span>It shows how the temperature of the substance falls as heat is removed.
The cooling curve shows how the temperature of a substances changes with time, as it is allowed to cool. The substance is first heated until completely liquefied, and then allowed to cool. The flat parts of the curve, where temperature is constant with time, show the periods in which the state of matter of the substance changes. One the substance completely changes it state of matter, namely changes from liquid to solid, its temperature continues to drop.
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Answer:
Four Ca²⁺ and eight Cl⁻ ions.
Explanation:
If
0.20 mol·L⁻¹ NaCl = 8Na⁺ + 8Cl⁻
Then
0.10 mol·L⁻¹ NaCl = 4Na⁺ + 4Cl⁻
And
0.10 mol·L⁻¹ CaCl₂ = 4Ca²⁺ + 8Cl⁻
The square will contain 4 Ca²⁺ ions and 8 Cl⁻ ions.
It should resemble the diagram below
Nuclear decay or radioactive decay is a process by which the nucleus of an unstable atom loses energy that is in terms of its mass. The radioactivity may cause an atom to lose whichever of its subatomic particles.
The explanation as why some of the atoms go through nuclear decay while others do not its because of the stability of some atoms. Atoms usually tend to follow octet rule, those which do not follow through this may experience the nuclear decay.
Azaleas’ are also known as the ‘Royalty of the Garden’, and are shrubs that bloom in from autumn to spring, depending on the variety.
Azaleas are either deciduous or evergreen, depending on the species, and generally like to grow under the shade of trees.
Azaleas are from the family ‘Ericaceae’, which is the family of heaths or heathers, and belong to the genus ‘Rhododendron’, which are a group of woody plants.
Azaleas grow up to 2.5 meters (8.2 feet) tall, although some only grow to half that height.
Azalea nectar and leaves are highly poisonous, and in the past, have been seen as a death threat if the flowers have been given in a black vase.
Places in Japan, Korea and the United States have festivals to celebrate azaleas.
Azaleas are mostly native to North America, and eastern parts of Asia, and the American species are generally deciduous, while the Asian species are generally evergreen.
Azalea flowers come in white, pink, mauve, purple, red, orange and yellow in colour, and the single varieties generally have 5 petals, but doubles can have up to 30.
Azaleas are popular garden plants, although many people do not know how to grow them properly, as they require specific growing conditions, which include the need for acidic soil.
Over 10,000 different cultivars of azaleas have been recorded and the plant and flowers are very similar to rhododendrons in appearance, so it is often difficult to tell them apart.
Could only find 10 sorry :)
Hope it still helps
Answer:
Complete ionic: 
.
Net ionic: 
.
Explanation:
Start by identifying species that exist as ions. In general, such species include:
- Soluble salts.
- Strong acids and strong bases.
All four species in this particular question are salts. However, only three of them are generally soluble in water: 
, 
, and 
. These three salts will exist as ions:
- Each
formula unit will exist as one 
ion and one 
ion. - Each formula unit will exist as one
ion and two 
ions (note the subscript in the formula 
.) - Each formula unit will exist as one and two ions.
On the other hand, 
is generally insoluble in water. This salt will not form ions.
Rewrite the original chemical equation to get the corresponding ionic equation. In this question, rewrite , , and (three soluble salts) as the corresponding ions.
Pay attention to the coefficient of each species. For example, indeed each formula unit will exist as only one ion and one ion. However, because the coefficient of 
in the original equation is two, 
alone should correspond to two 
ions and two 
ions.
Do not rewrite the salt because it is insoluble.
.
Eliminate ions that are present on both sides of this ionic equation. In this question, such ions include one unit of and two units of . Doing so will give:
.
Simplify the coefficients:
.
