CHEMISTRY HIGH SCHOOL

Which is a characteristic of mixtures? They are chemically bonded together. They can be classified as pure substances. They have fixed ratios between their components. They can be separated by physical processes.

Answers

Answer 1
Answer:

the answer is d i just took the quiz
Answer 2
Answer:

The statement "They can be separated by physical processes" is a characteristic of mixtures (option D)

What are mixtures?

Mixtures are physical combinations of two or more substances. The components of a mixture are not chemically bonded together, and they can be separated by physical processes such as filtration, distillation, and evaporation.

Pure substances, on the other hand, are made up of only one type of atom or molecule. They cannot be separated by physical processes.

Therefore, the correct answer is They can be separated by physical processes (option D)

Learn about mixtures here brainly.com/question/2331419

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How many molecules are in 10 moles of Hydrogen?

Answers

Answer:3.2

Mass:32

Molecular weight: 10

Moles: 3.2

What is the change in heat energy when 132g of copper at 32.2°C is raised to 45.0oC? The specific heat of copper is 0.385 J/g °C.

Answers

Heat energy can be calculated by using the specific heat of a substance multiplying it to the mass of the sample and the change in temperature. It is expressed as: 

Energy = mCΔT
Energy = 132 (0.385) (45 - 32.2)
Energy = 650.50 J

What element was used to make the first atomic bomb

Answers

The element was uranium, it was made during World War II ( the first atomic bomb was dropped on Japan, Hiroshima )
For more information, a H-bomb ( Hydrogen bomb ) is more explosive ( the sun is made mostly by Hydrogen ) and North Korea declared that they just have one. 

In 3 to 5 sentences identify the type of bonding the would form between potassium and chlorine use a electronegativitynegativity to justify the bond type provide a chemical formula for resulting compound

Answers

Answer: Potassium and chlorine would form an ionic bond due to their large difference in electronegativity values (3.0 for chlorine and 0.8 for potassium). In ionic bonding, one atom completely transfers electrons to another atom to form ions with opposite charges that are attracted to each other. Since potassium loses one electron to become a positive ion (K+) and chlorine gains one electron to become a negative ion (Cl-), the resulting compound will be KCl (potassium chloride).

Please help me, please

Answers

Answer:

A. Metal

Explanation:

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Answer:

Metal

Explanation:

they deleted my answer so I am putting it back sorry

How are the atoms in an object affected when the temperature of the object increase?

Answers

As the temperature is increased, the atoms displace their neighboring atoms and this chain goes continuously due to which energy is transferred from one atom to their neighbor atom like wise vibration and energy increases.
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A 1.00 g sample of a hydrogen peroxide (H2O2) solution is placed in an Erlenmeyer flask and diluted with 20 mL of 1 M aqueous sulfuric acid. To this solution is added 0.0200 M KMnO4 solution via a buret, until a pale purple color persists. This requires 22.50 mL of KMnO4 solution. What is the percent by mass of hydrogen peroxide in the original solution? (A) 0.613% (B) 1.53% (C) 3.83% (D) 7.65%