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Pani-rosa [81]
3 years ago
15

Which of the following reactions demonstrates a synthesis reaction?

Chemistry
2 answers:
marysya [2.9K]3 years ago
8 0
It is D I took the test
Maksim231197 [3]3 years ago
7 0
It would be D. 2NaCl → 2Na + Cl2, hope this helps :)
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How many atoms are there in 2.3 grams of zirconiumn?
Effectus [21]

Answer:

1.51834×10^22

Explanation:

Number of atom=Mass/Molar Mass × avogadros constant

2.3g/91.224g/mol × 6.203×10^23

5 0
3 years ago
Compare the state of plasma to the other states of matter
dmitriy555 [2]
Plasma is the most least form on Earth and we hardly use it but it is the most common in the universe because it is mostly loacted in space
4 0
4 years ago
You have an atom represented by X (not real by the way). X has 2 valence electrons. You have another atom Y that has 5 valence e
BabaBlast [244]

The chemical formula : X₃Y₂

<h3>Further explanation  </h3>

The noble gas element is a stable class of elements. The noble gas element is monatomic. Stability of noble gases is caused by an electron configuration that has a stable configuration of 8 (has 8 valence electrons) except He with a duplet configuration (has 2 valence electrons)

Other elements that do not yet have electron configurations such as noble gases will try to achieve their stability by forming bonds between elements.

This is generally called the octet rule

X has 2 valence electrons.to achieve stability, element X will release 2 electrons to form X²⁺

Y has 5 valence electrons, to achieve stability, the element Y will attract/ add electrons to form Y³⁻

The two compounds will form a compound with the charges crossed : X₃Y₂

6 0
4 years ago
What is the percent composition of Ca(C2H3O2)2?
Fynjy0 [20]

Answer:

A

Explanation:

RMM of ca(c2h302)2=158

%Ca= 40/158×100=25.3

%C=48/158×100=30.3

%H=6/158×100=3.7

%O=64/158×100=40.5

6 0
3 years ago
Read 2 more answers
Which two reactants make Calcium carbonate?
Norma-Jean [14]

Impossible to form from given reactants

Explanation:

Only sodium has carbonate ion here .so only possible way to displace carbonate is to use potassium

When sodium carbonate and Potassium iodide react with each other double displacement reaction occurs

As potassium is powerful than sodium it displaces sodium to form potassium carbonate .

Then you have to use water and then you can use calcium suppliment .

3 0
2 years ago
Read 2 more answers
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