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loris [4]
3 years ago
5

Some one help me with this will give brainliest

Chemistry
1 answer:
Alona [7]3 years ago
3 0
14. C
15. B
16. D
17. D
18. I am not sure sorry.<span />
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Facts about curiosity please please help
Tresset [83]
Curiosity's mission is to determine whether the Red Planet ever was, or is, habitable to microbial life. The rover, which is about the size of a MINI Cooper, is equipped with 17 cameras and a robotic arm containing a suite of specialized laboratory-like tools and instruments.
7 0
3 years ago
52. Classify each compound as ionic or molecular. If it is ionic,
Darina [25.2K]

Answer:

Explanation:

1...............

CoCl₂ is an ionic compound

CF₄ is molecular

BaSO₄ is an ionic compound

NO is molecular

An ionic compound is a compound which forms between a metal and non-metal. It involves the formation of a bond between two ions of significant electronegative difference. It results from the electrostatic force of attraction between two atoms in which one has lost an electron(metal) and the other that has gained an electron(non-metal).

     CoCl₂ is an ionic compound

     BaSO₄ is also ionic

A molecular compound is formed as a result of covalent bonds between atoms. This is due to the fact that the two atoms have similar electronegativities and would both pull the shared electrons closely. Most molecules are usually formed this way.

      CF₄ and NO are both molecular compounds

2...... The ionic compounds are the ones containing metals:

         In CoCl₂ the metal is Co, cobalt

             BaSO₄ has Ba

 Co is a transition metal. Transition elements are known to have various oxidation states. This implies that they can form more than one type of ion. The oxidation number of Co are -1, 0, +1, +2, +3 and +4

 Ba will only form one type of ion as an alkaline earth metal. It has an oxidation state of +2 only. It will only form one type of ion.

8 0
3 years ago
State with reasons the most suitable methods for collecting hydrogen​
maxonik [38]

Answer:

Upward delivery or downward displacement of air

Explanation:

The method of collection of a gas is dependent on it's density.

Gases that are less dense than air are collected by upward delivery or downward displacement of air while gases that are denser than air are collected by downward delivery or upward displacement of air.

Hydrogen is less dense than air hence it is collected by upward delivery or downward displacement of air.

7 0
3 years ago
A cylinder is filled with 10.0 L of gas and a piston is put into it. The initial pressure of the gas is measured to be 273. kPa.
Ann [662]

P2 = 54.6 kPa

Explanation:

Given:

V1 = 10.0 L. V2 = 50.0 L

P1 = 273 kPa. P2 = ?

We can use Boyle's law to solve this problem.

P1V1 = P2V2

Solving for P2,

P2 = (V1/V2)P1

= (10.0 L/50.0 L)(273 kPa)

= 54.6 kPa

5 0
3 years ago
Is hydrogen formed as a product?
ollegr [7]

Answer:

Hydrogen may be used in fuel cells for local electricity generation or potentially as a transportation fuel. Hydrogen is produced as a by-product of industrial chlorine production by electrolysis.

8 0
3 years ago
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