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nalin [4]
3 years ago
12

NEED HELP ASAP!!!PLZZ

Chemistry
1 answer:
Simora [160]3 years ago
5 0
Im pretty sure it's D.
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A chemist wishes to prepare a pure sample of silver bromide (agbr). first the chemist combines hydrobromic acid (hbr) and silver
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You need to boil away the water from the solution next.
4 0
4 years ago
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I’m so confused please help on how to balance all these equations!
Arisa [49]

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

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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

7 0
4 years ago
As you go down group one of the periodic table, the reactions become and more
Lady bird [3.3K]

Answer:

vigorous

Explanation:

As you go down group one of the periodic table, the reactions become and more vigorous.

3 0
2 years ago
As the temperature of a sample of a radioactive element decreases, the half-life will
ki77a [65]

As the temperature of a sample of a radioactive element decreases, the half-life will remain the same

<u>Explanation:</u>

Half-life is defined as the time needed for half of the opening material to modify or decay. Half-lives can be estimated from measures on the variation in the mass of a nuclide and the period it gets to occur. In the period of that substance's half-life, half of the primary nuclei will decompose.

Although chemical changes were raced up or delayed down by varying factors such as temperature, concentration, etc, these factors do not affect half-life. Each radioactive isotope will have its unique half-life that is independent of any of these factors.

5 0
3 years ago
A student dissolves a substance in water, tests the resulting solution, and observes that red litmus paper turns blue. based on
dlinn [17]

Answer:

The solution is a base

Explanation:

A basic solution changes red litmus paper to blue. This is one unique property of a base that differentiate them from All other compound

8 0
3 years ago
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