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Maru [420]
2 years ago
10

Classify the following reactions into: Element – Element, Element – Compound, Compound – Compound

Chemistry
1 answer:
Rudiy272 years ago
3 0

Answer:

1. CaO + H₂O ----> Ca(OH)₂

Compound ----- Compound

2. 2 Na + Cl₂ ----> 2 NaCl

Element ----- Element

3. 2 SO₂ + O₂ ----> 2 SO₃

Element ----- Compound

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what is the volume of aluminum with the mass of 0.85g
Mrrafil [7]

Answer:

If the mass of a sample of aluminum foil is known, then it is possible to calculate the volume of the foil. In general volume is the product of length times width times height of an object. If we know the length and width of a piece of foil, we can then determine its height, or thickness.

sorry if wrong

3 0
3 years ago
Read 2 more answers
Unless otherwise instructed, you may use the periodic table in the Chemistry: Problems and Solutions book for this question.
Aleks [24]

Answer:

The electronegativity differences between carbon and oxygen are not very large.

Explanation:

Between the atoms of carbon monoxide exists a covalent bond which attaches the carbon to the oxygen.

In this type of bonding, both atoms shares a given number of valence electrons to attain chemical stability.

A substance is polar when there is a distinct charge separation between the species.

For covalent bonds, the electronegativity difference plays in important role in determining the polarity of the compound. When the difference is large, the compound will be polar but when the difference is very small or zero, no polarity will exist.

In between carbon and oxygen of carbon monoxide, the electronegativity difference is very low.

8 0
3 years ago
What's a certain indicator that a molecule is polar?
sladkih [1.3K]
A polar molecule is when the arrangement of the atoms in molecules are unequal, so one end of the molecule has a positive charge, and the other end has a negative charge. 
3 0
3 years ago
Substances that make up a mixture __________ their own properties once they are combined to form a mixture. Please help. I need
Stels [109]
I believe the answer to this is;
Substances that make up a mixture RETAIN their own properties once  they are combined to form a mixture. 
    I believe the answer is RETAIN because the combination in question is a MIXTURE. A mixture is a combination of various substances. In the case of mixtures, all the substances retain their own properties. That is; they remain the way they are and do not change. An example of a mixture is air. And to prove that air is a mixture;
The components of air retain their individual properties.
The components of air cannot be represented by a chemical formula
When the components of air combine, they do not show any form of chemical change, like heat release, change in pressure.....
  Hope i helped, have a nice day.
8 0
3 years ago
I need help finding this out
pishuonlain [190]
Its either b or c, but i think its b
8 0
3 years ago
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