Compounds are elements and its a pure substance with a gised composition.
Mixtures two or more subtances mixed to together.There are 2 type of mixtures.
Homegenous Mixtures (Solutions)-Two or more substances mixed but is uniform, you cant see the different mixtures.
Ex:Sugar mixed with water.The sugar dissolves and becomes one with the water.
Heterogeneous Mixtures-Two or more substances mixed but is not uniformed.You can see all the substances put into the mixture.
Ex:A salad, you can see whats all mixed in the sald and can pick it apart.
Answer:
1. How many atoms are in 6.5 moles of zinc? 6.5 moles. 6.02 x 10. 23 atoms = atoms. 3. Convert 2.35 moles of carbon to atoms. 2.35 moles 6.02 x 10. 23.
Answer:
Hey
You.
You emit infered light via heat.
The sun
The sun emits <em><u>all</u></em> frequincies of light, but mostly yellow light.
Your microwwaves
As your food gets hotter the microwwaves shake up the water molecules because they are the perfect frequincy to do so.
Wbob1314
Answer:
Y, Q, W, Z and X
Y > Q > W > Z > X
Explanation:
To know the most reactive element, the element will be able to displace other metal in it compound. We also have to observe if the reaction occur. If the reaction didn't occur, that means the element is not reactive than the metal found in the other reactant. Invariably their will be no displacement.
Q + w+ Reaction occurs
Q element displace the metal w in it compound . This means Q is more reactive.
x +z+ No reaction
No reaction here. This means x is less reactive than z as it couldn't displace z in it compound.
w + z+ Reaction occurs
w is more reactive than z as it displaces z in it compound.
Q+ + Y Reaction occurs
Y is more reactive than Q as it displaces Q in it compounds.
Therefore, the most reactive to the least reactive is arrange as follows.
Y, Q, W, Z and X
Answer:
- NH₄CN,
- NH₄ClO₃,
- (NH₄)₂SO₃,
- NH₄H₂PO₄.
- Al(CN)₃,
- Al(ClO₃)₃,
- Al₃(SO₃)₃,
- Al(H₂PO₄)₃.
Explanation:
Cations (positive ions) and anions (negative ions) combine to form ionic compounds. The charge of each ion is stated as the superscript in its formula.
The final compounds should be neutral (not carrying charge.) For that to happen, the ions should combine at a ratio that allows their charges to balance.
By convention, in chemical formula of ionic compounds, cations are written before anions.
<h3>Example: Al³⁺ and SO₃²⁻</h3>
The charge on an Al³⁺ cation is +3. The charge on a SO₃²⁻ anion is -2.
Start by finding the least common multiple of the absolute value of the charges (drop the negative sign in front of the charge.)
.
The number of Al³⁺ ions in a formula unit of this compound will be equal to
.
Similarly, the number of SO₃²⁻ ions in a formula unit of this compound will be equal to
.
If a polyatomic ion (an ion with more than one atoms in it) appears more than once in the formula, enclose it in brackets and write the number of its occurrence outside the bracket.
.
Apply this rule to find the formula of other compounds. Additionally, keep in mind that if the charge on the cation and the anion is the same, each should occur only once in the formula.