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alexandr1967 [171]
3 years ago
9

Fireworks change blank into blank and blank energy.

Chemistry
1 answer:
Ann [662]3 years ago
6 0
They first change into chemical, then to radiant, then finally to thermal energy.
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Number of sodium atom(s) in salt (NaCl)
asambeis [7]

Answer:

NaCl consists of one atom each of sodium and chlorine. Hence, each molecule of NaCl has 2 atoms total.

Explanation:

6 0
3 years ago
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35. In the collision theory, a collision that leads to the formation of products is called an
FinnZ [79.3K]

Answer:

It's Effective Collision.

Explanation:

Hope my answer has helped you!

7 0
3 years ago
What is the number of moles in 15.0 g AsH3?
pentagon [3]

We are given with the mass of Arsine (AsH_{3}

The mass of arsine is 15g

there is a relation between moles, mass and molar mass of any compound which is

moles=\frac{mass}{molarmass}

The molar mass of Arsine = atomic mass of As + 3X atomic mass of H

the molar mass of Arsine = 74.92 + 3X 1 = 77.92 g/mol

Let us calculate the moles as

moles=\frac{15}{77.92}=0.192mol


7 0
3 years ago
If element A is in Group 13 and element B is in Group 17, which ions will be formed when A and B react together?
Kobotan [32]

Answer:

A3+ and B-

Explanation:

Elements in group 13 have outermost electron configuration, ns2np1 hence they form trivalent positive ions.

Elements in group 17 have outermost electron configuration ns2np5 hence they form univalent negative ions.

This implies that, if element A is in Group 13 and element B is in Group 17, the ions formed are A3+ and B-.

8 0
2 years ago
Is HBr a polar compound? Why or why not?
LenKa [72]
Yes, it is a Compound.

They both comprehend with the atoms of each sourse!
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