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3 years ago

How can I write mass as a sentence

Chemistry

2 answers:

Scilla [17]3 years ago

5 0

The mass of a object doesn't change when it changes its location hope the helped you ......

Stells [14]3 years ago

3 0

The mass of a textbook was really heavy.
Hope I helped

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Due to decay of ⁴⁰K, cow’s milk has a specific activity of about 6X10⁻¹¹mCi per milliliter. How many disintegrations of ⁴⁰K nucl

FromTheMoon [43]

When we discuss radioactive isotope activity, we consider how many decays or disintegrations occur per unit of time. Therefore, activity is determined by the quantity of disintegrations over time. Ah, the becquerel, or B que, is a measurement unit that is widely used to quantify activity. It is equivalent to one decay or one disintegration per second. Therefore, we occasionally shorten it to one d. per s. The curie, denoted by the letters C I, is a second unit we used to denote activity. The result is 1.4 times 10 to the negative 11. Curie's modify this to Beck, Carell's One Curie from curies. His 10 times 10 times 3.7 's Becca Rell And we are aware that one Decorah is equal to one Decay every second. Therefore, we multiply by 1.4 x 10 - 11 times. There are 5 to 5 decays per second, or 3.7 x 10 to the 10 refined. There is one more conversion because my query now asks us what this would be in decays per minute. We multiply 60 by 5.5 to 5 to get the number of decays per minute from our activity and decays per second. This yields 32 decays per minute, which is significant at 30.

<h3>What are isotopes?</h3>

Isotopes are two or more atom types that have the same atomic number (number of protons in their nuclei), location in the periodic table, and chemical element but have distinct nucleon numbers (mass numbers) as a result of having a different number of neutrons in their nuclei. Although the chemical properties of each isotope of a particular element are almost identical, they differ in their atomic weights and physical characteristics.

To learn more about isotopes:

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5 0

2 years ago

Please help easy chemistry

Rzqust [24]

Answer:

The answer to your question is the third option, atoms of each lose one electron to achieve stability.

Explanation:

a) The first option is incorrect, those elements are extremely reactive and can explode.

b) The option is also incorrect, metalloids are located in groups 3A, 4A OR 5A in the periodic table.

c) This option is correct

d) These elements have 1 valence electron, this option is wrong.

5 0

4 years ago

What kind of bond is formed when electrons are gained or lost ?

lisov135 [29]

C.) Ionic bond is formed between that...

3 0

4 years ago

When the following equation is balanced with the lowest whole number coefficients possible, what is the coefficient in front of

larisa86 [58]

The unbalanced chemical reaction is
<span>Na (s) + H2O (g) yields NaOH (aq) + H2 (g)

By inspection,
There is 1 mole of Na in both sides
There is 2 moles of H in the left and 3 moles in the right side.
</span>There is 1 mole of O in both sides
<span>
We balance the reaction by:

</span>2Na (s) + 2H2O (g) yields 2NaOH (aq) + H2 (g)

The answer is 2

4 0

3 years ago

Give the electron configuration of vanadium (V), atomic number 23

saveliy_v [14]

1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d³ or [Ar] 4s²3d³

<h3>Further explanation</h3>

Given

Vanadium, atomic number 23

Required

The electron configuration

Solution

In an atom, there are levels of energy in the shell and subshell

This energy level is expressed in the form of electron configurations.

Charging electrons in the subshell uses the following sequence:

The electron configuration is based on the atomic number which indicates the number of electrons of the atom

Vanadium has the atomic number 23, so the number of electrons = 23

Electron configuration:

1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d³

or we can write it using the noble gas notation

[Ar] 4s²3d³

4 0

3 years ago