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gregori [183]
2 years ago
9

The change in velocity over a specific amount of time Includes speeding up. slowing down or changing direction. This is known as

O speed acceleration changing speed​
Chemistry
1 answer:
Nana76 [90]2 years ago
3 0

Answer:

Acceleration

Explanation:

Acceleration = \frac{velocity}{time}

You might be interested in
Why do different isotopes of an element generally have the same physical and chemical properties?
tresset_1 [31]

Answer:

The correct answer is because they have same number of protons but different number of neutrons.

Explanation:

Isotopes are atoms of the same element but differ only in the number of neutrons in the nucleus, i.e. they have same atomic number but different mass number.

Mass number is affected as they have different number of neutrons, thus effecting their physical properties.

The number of electrons and protons are same, i.e. their atomic number is same and thus their chemical properties are same as chemical properties are determined by the atom’s electronic configuration and that relates to number of protons.

5 0
3 years ago
When a 3.00 g 3.00 g sample of KBr KBr is dissolved in water in a calorimeter that has a total heat capacity of 1.36 kJ ⋅ K − 1
cupoosta [38]

Answer:

Molar heat of solution of KBr is 20.0kJ/mol

Explanation:

Molar heat of solution is defined as the energy released (negative) or absorbed (Positive) per mole of solute being dissolved in solvent.

The dissolution of KBr is:

KBr → K⁺ + Br⁻

In the calorimeter, the temperature decreases 0.370K, that means the solution absorbes energy in this process. The energy is:

q = 1.36kJK⁻¹ × 0.370K

q = 0.5032kJ

Moles of KBr in 3.00g are:

3.00g × (1mol / 119g) = 0.0252moles

Thus, molar heat of solution of KBr is:

0.5032kJ / 0.0252moles = <em>20.0kJ/mol</em>

3 0
3 years ago
Which of these solution is most basic
pantera1 [17]

Answer:

There is nothing to answer lol

8 0
2 years ago
Read 2 more answers
Which of the following would naturally form a cation?<br> Ne<br><br> Li<br><br> O<br><br> I
Lina20 [59]
Metals naturally form cations.
4 0
3 years ago
What relationship exists between the mass number of an element and the isotopes of that element?
labwork [276]
The mass number plays an important role for elements and their isotopes. Mass number comes from the addition of protons and neutrons (their weight). Isotopes are the elements, but with a different number of neutrons. So in turn, by subtracting the number of protons (atomic number) from the mass, you can find the number of neutrons.
8 0
3 years ago
Read 2 more answers
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