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Anestetic [448]
2 years ago
15

Which of the following vary for isotopes of atoms of the same element?

Chemistry
2 answers:
cupoosta [38]2 years ago
7 0

Answer:

The answer is B. Atomic Mass

Mila [183]2 years ago
5 0
Atomic mass because “Different isotopes of the same element have the same atomic number. They have the same number of protons.” and it cant be electrons since they’re equal to protons and in isotopes only neutrons are differnet. “Isotopes are atoms with different atomic masses which have the same atomic number.”
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If you negate reaction 2 and combine the reactions, which substances do not cancel?
olya-2409 [2.1K]

"Mg, MgO, and O2 "

THOSE ARE THE ANSWERS!


4 0
3 years ago
In an isolated system:
ipn [44]

Answer:

isolated system (plural isolated systems) (physics) A system that does not interact with its surroundings. Depending on context this may mean that its total energy and/or momentum stay constant.

Explanation:

An isolated system is a thermodynamic system that cannot exchange either energy or matter outside the boundaries of the system. ... The system may be enclosed such that neither energy nor mass may enter or exit.

is there both?

7 0
3 years ago
When three pairs of electrons are shared in a molecule, what shape will the molecule be?
djyliett [7]
The correct answer is B. The shape of a molecule where three pairs of electrons are shared is a trigonal planar. This is characterized by one central atom and three atoms forming an equilateral triangle which is bonded to the central atom.
8 0
3 years ago
Read 2 more answers
How many molecules are present in 4.21 moles of HBr?​
salantis [7]

Answer:

The answer is

<h3>2.53 × 10²⁴ molecules</h3>

Explanation:

The number of molecules present can be found by using the formula

<h3>N = n × L</h3>

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

N = 4.21 × 6.02 × 10²³

We have the final answer as

<h3>2.53 × 10²⁴ molecules</h3>

Hope this helps you

6 0
3 years ago
Whats heptane's formula?
Dovator [93]
Heptane means seven carbon atoms and since the general formula is CnH2n+2, heptane will be C7H16
5 0
3 years ago
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