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zaharov [31]
3 years ago
6

Mixture formation is a ________change.​

Chemistry
1 answer:
xxMikexx [17]3 years ago
6 0
Chemical should be your answer.
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It is important to know the difference between atoms, ions, and isotopes. Choose all of the correct answers. An atom of oxygen a
bija089 [108]

The following are true:-

An atom of oxygen and the ion of oxygen both have 8 protons.

As you add or remove neutrons from the nucleus, isotopes are formed.

4 0
4 years ago
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1. The octane present in gasoline burns according to the following equation:
Harman [31]

Answer:

n_{O_2}=343.75molO_2

Explanation:

Hello there!

In this case, according to the combustion of octane:

2C_8H_1_8+25O_2\rightarrow 16CO_2+18H_2O

We can see there is a 2:25 mole ratio of octane to oxygen; therefore, we can calculate the moles of oxygen via the following stoichiometric factor:

n_{O_2}=27.5molC_8H_1_8*\frac{25molO_2}{2molC_8H_1_8} \\\\n_{O_2}=343.75molO_2

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5 0
3 years ago
What mass of zinc will completely react with 125.0 mL of a solution of nitric acid (HNO3) which has concentration of 0.850M?
kati45 [8]

The mass of zinc required to react with HNO3 is 3.45 g

<h3>What is moles of HNO3 reacting?</h3>

The moles of HNO3 reacting is calculated using the formula below:

  • moles = concentration × volume

volume = 0.850

volume = 125.0 mL = 0.125 L

Moles of HNO3 = 0.850 × 0.125 = 0.10625 moles

Equation of reaction:

Zn + 2 HNO3 --> Zn(NO3)2 + H2

2 moles of HNO3 reacts with 1 mole of Zn.

moles of zinc reacting = 0.10625/2 = 0.053125

Mass of zinc = moles × molar mass

molar mass of Zn = 65

Mass of zinc = 0.053125 × 65

mass of Zn = 3.45 g

Therefore, the mass of zinc will completely react with 125.0 mL of a solution of nitric acid (HNO3) which has concentration of 0.850M is 3.45 g

Learn more about moles at: brainly.com/question/15356425

3 0
3 years ago
The following properties are either physical or chemical. Which one is different from the rest based on those two categories?
wel
Chemical properties can only be analyzed by putting the substance through a chemical reaction, such as combustion.
Physical properties can be analyzed without altering the substance chemically. With that in mind:

Boiling point: physical
Density: physical
Ductility: physical
Heat of combustion: chemical

7 0
3 years ago
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What can make normal rain more acidic?
Kay [80]

Answer: Sulfur dioxide and nitrogen oxides dissolve very easily in water and can be carried very far by the wind. These pollutants cause acid rain.

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3 years ago
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