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Lorico [155]
3 years ago
14

I’m confused on all this and I need the answers...

Chemistry
1 answer:
Anarel [89]3 years ago
7 0

Answer:

Explanation:

Synthesis Reaction:

The reaction in which two or more molecules or compound combine together to form a new compound.

1. K + Cl₂ --------> KCl

Balanced equation

                 2 K + Cl₂ -------->2 KCl

--------------------------------------

2. Ca + F₂ --------> CaF₂

Balanced equation

                Ca + F₂ --------> CaF₂

--------------------------------------

3. Ag + S --------> AgS

Balanced equation

                2Ag + S --------> Ag₂S

--------------------------------------

4. Na + I₂ --------> NaI

Balanced equation

                2 Na + I₂ --------> 2 NaI

--------------------------------------

5. Mg + O₂ --------> MgO

Balanced equation

                2 Mg + O₂ --------> 2 MgO

--------------------------------------

6. H₂ + Cl₂ --------> HCl

Balanced equation

                H₂ + Cl₂ --------> 2 HCl

____________________________

Decomposition reaction:

when one compound breaks down into 2 or more molecule or components.

7. Cs₂O  -------->  Cs + O₂

Balanced equation

                2 Cs₂O  -------->  4 Cs + O₂

--------------------------------------

8. H₂O  -------->  H₂ + O₂

Balanced equation

                 2 H₂O  -------->  2 H₂ + O₂

--------------------------------------

9. MgBr₂  -------->  Mg + Br₂

Balanced equation

                 MgBr₂   -------->  Mg + Br₂

--------------------------------------

10. AlCl₃  -------->  Al + Cl₂

Balanced equation

                 2 AlCl₃   -------->  2 Al + 3 Cl₂

--------------------------------------

11. KI  -------->  K + I₂

Balanced equation

                 2 KI  -------->  2K + I₂

--------------------------------------

12. NaCl  -------->  Na + Cl₂

Balanced equation

                 2 NaCl  -------->  2 Na + Cl₂

_______________________________

Combustion:

when a fuel burn in the presence of oxygen and produces carbon dioxide and water.

13. C₃H₈ + O₂ -------->  CO₂ + H₂O

Balanced equation

                 C₃H₈ + 5 O₂ -------->  3 CO₂ + 4 H₂O

--------------------------------------

14. C₂H₄ + O₂ -------->  CO₂ + H₂O

Balanced equation

                C₂H₄ + 3 O₂ -------->   2 CO₂ +  2 H₂O

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A student dissolves 3.9g of aniline (C6H5NH2) in 200.mL of a solvent with a density of 1.05 g/mL . The student notices that the
tino4ka555 [31]

Answer:

2.1 × 10⁻¹ M

2.0 × 10⁻¹ m

Explanation:

Molarity

The molar mass of aniline (solute) is 93.13 g/mol. The moles corresponding to 3.9 g are:

3.9 g × (1 mol/93.13 g) = 0.042 mol

The volume of the solution is 200 mL (0.200 L). The molarity of aniline is:

M = 0.042 mol/0.200 L = 0.21 M = 2.1 × 10⁻¹ M

Molality

The moles of solute are 0.042 mol.

The density of the solvent is 1.05 g/mL. The mass corresponding to 200 mL is:

200 mL × 1.05 g/mL = 210 g = 0.210 kg

The molality of aniline is:

m = 0.042 mol/0.210 kg = 0.20 m = 2.0 × 10⁻¹ m

5 0
3 years ago
Which would result in radioactive decay? Check all that apply
Gekata [30.6K]

6+2=115 and its good it took test



4 0
3 years ago
Read 2 more answers
I'm in a rush please help
Alexeev081 [22]

16) <

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19) =

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4 0
4 years ago
What are the chemical properties of alcohol?
ch4aika [34]
The chemical properties of alcohol are compounds that possess a hydroxyl group (OH) connected an sp3 hybridized carbon hope i it help
7 0
3 years ago
Will mark Brainlest ( molecular weight of ammonium sulphate)<br>step by step​
Bond [772]

Answer:

132 amu

Explanation:

ammonium sulphate is (NH_4)_{2} SO_4

to calculate molecular weight we need

atomic weight of the element of the compound

here ammonium sulphate is formed by two elements

2 nitrogen , 8 hydrogen , 1 sulphur amd 4 oxygen

atonomic number of nirogen is 14 , hydrogen is 1 , sulphur has 32 and oxygen has 16

so lets calculate molecular weight of ammonium sulphate

2*14 + 8*1 + 1*32 + 4*16

28 + 8 + 32 + 64

132 amu

3 0
3 years ago
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