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tiny-mole [99]
3 years ago
10

BRAINLIEST TO WHOEVER ANSWERS CORRECTLY FIRST!

Chemistry
1 answer:
Alenkasestr [34]3 years ago
7 0

Answer:

water

Explanation:

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An isotope has 15 protons, 16 neutrons, and 15 electrons. What is the isotopic notation of the isotope
VikaD [51]

Answer:

^{31}_{15}P is the isotopic notation of the atom

Explanation:

The isotope notation is:

^a_bX

<em>Where a is the mass number = Number of protons + Number of neutrons</em>

<em>b is atomic number = Number of protons</em>

The atomic number define the nature of the atom, the element with atomic number = 15 is phosphorus, P:

^a_bP

a = 15 protons + 16 neutrons = 31

b = 15

^{31}_{15}P is the isotopic notation of the atom.

3 0
3 years ago
How many moles of potassium hydroxide are needed to completely neutralize 1.56 mol phosphoric acid?
frez [133]
3KOH + H₃PO₄ ----> K₃PO₄ + 3H₂O
3 moles 1 mole


3 moles KOH ------ 1 mole H₃PO₄
X moles KOH ------ 1,56 mol
X = 3×1,56
X = 4,68 moles of KOH

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7 0
3 years ago
Describe how molecular motion and distance between molecules change as ice is heated to become a liquid and then a gas
MAXImum [283]

Answer:

Described in the explanation section

Explanation:

Ice is the solid phase of water and this phase, the water molecules usually have very little energy and therefore can't detach from each other. This is because the water molecules are closely packed together in a regular arrangement normally called lattice.

Now, when the ice is heated to become a liquid, the energy of the water molecules increases and thus some of them will have enough energy to overcome the intermolecular forces that had been keeping them closely packed in the ice phase. This will then make the water molecules to move further apart thereby forming liquid water.

Now, when the molecules are heated further, the liquid water will now turn into water vapor, which is the gas phase of water. The molecules in this gas phase will have more energy than in the liquid phase because the average distances between each of them will be much larger than the size of the molecules themselves.

8 0
3 years ago
How would you calculate the molar mass of 2AgCl?
Rashid [163]
2 × (atomic mass of Ag) + (atomic mass of Cl (
3 0
3 years ago
15g of sugar and 10g of water are measured separately. The sugar is dissolved in the water. What will
quester [9]

Answer: a) No, both are different.

b) Ramesh- 9.9%

  Sarika - 10%

Explanation:

According to the solution prepared by Ramesh,

Mass of sugar he took (Solute) = 10 g

Mass of water he took (Solvent) = 100 g

Thus Mass % of the solution =

     

According to the solution prepared by Sarika,

Mass of sugar she took (Solute) = 10 g

Mass of Solution she took  = 100 g

Thus Mass % of the solution =

     

Explanation:

7 0
3 years ago
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