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alexira [117]
3 years ago
12

Conversions please help me with 6 & 7

Chemistry
1 answer:
frosja888 [35]3 years ago
6 0

6.

7. 6 × 7 = 42

42 ÷ 10 = 4,2 Pizzas

You need to buy 4 or 5 Pizzas.

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What can scientists measure to provide evidence that electrons can move from one energy level to another
andrey2020 [161]

Answer:

recording the wavelength of light

Explanation:

When an appropriate measure of energy say in the form of light of a certain wavelength, is supplied, electrons have a tendency to absorb the energy and get excited to a higher energy level. Conversely, if an electron is already at a higher energy state it will emit energy in the form of light (or heat) and return to a more stable lower energy state.

8 0
4 years ago
How many phosphorus atoms would combine together to form a stable molecule​
Elan Coil [88]

Answer:

Four  

Explanation:

P has five valence electrons. It can form bonds to three other atoms (like H) to form a triangular pyramidal molecule with a lone pair on the P atom.

If P atoms are to form bonds with each other, we can get a stable arrangement by putting each atom at the corner of a tetrahedron.

In a P₄ molecule, each atom still has three bonds and a lone pair.

6 0
3 years ago
If 25.0 ml of seawater has a mass of 25.895 g and contains 1.295 g of solute, what is the mass/mass percent concentration of sol
Romashka-Z-Leto [24]
The  %  mass/mass concentration  of   solute  in the  seawater  sample  is  calculated  as  below


% mass =  mass  of the  solute /mass of the solvent(sea water)  x100
mass  of  the  solute =1.295  g
mass  of the  solvent(sea   water_)  =  25.895 g

there  the % mass =  1.295/25.895  x100 =  5.001 %  
8 0
3 years ago
Question 3 of 8
vitfil [10]

Answer:

B

Explanation:

7 0
3 years ago
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What is the solubility of the diazonium salt​
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Diazonium salts are salts formed from aromatic primary amines by diazotization. Diazonium salts are not very stable but very reactive. It therefore serves as a starting material for the preparation of various derivatives of arenes, azo dyes and pharmaceuticals.

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4 years ago
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