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Harman [31]
3 years ago
12

The mass number of a nucleus (except Hydrogen) is:

Chemistry
2 answers:
posledela3 years ago
8 0
Never less than its atomic number
This is because the mass number is the sum of both the number of neutrons and protons, while the atomic number is the number of protons. Hydrogen is the only element without neutrons.
Verizon [17]3 years ago
8 0
Never less than its atomic no.

Mass no. = protons + neutrons
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For this device the liquid to be tested is drawn into the tube to a level above the top etched line. The time is then obtained f
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Answer:

The dynamic viscosity of the liquid is 0.727 kg/m*s

Explanation:

In the equation for that viscosimeter, ν = KR⁴t, <u>the terms K and R are not dependent on the liquid that is being tested</u>, unlike ν and t.

Using that equation and the data given in the problem, we can calculate the product of K and R⁴.

1.19*10⁻³m²/s = (KR⁴)* 1430 s

KR⁴=8,32*10⁻⁷m²/s²

We can now calculate the<em> </em><u><em>kinematic</em></u> viscosity of the unknown liquid.

ν=8,32*10⁻⁷m²/s²*900s

ν=7.49*10⁻⁴m²/s

The relationship between the <em>kinematic</em> viscosity and the <em>dynamic</em> viscosity is given by the equation μ=ν * ρ, where μ is the dynamic viscosity and ρ is the density. Thus:

μ=7.49*10⁻⁴m²/s * 970 kg/m³

μ=0.727 kg/m*s

8 0
3 years ago
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Where are gummy bears made?
Natalija [7]
Gummy bears are made in a special factory with many different tools in it that process the gummy bears
6 0
3 years ago
Elements can combine to form molecules, like o2 or co2. elements combine to form molecules and these elements are joined togethe
Yuri [45]
Elements can combine to form molecules, like o2 or co2. elements combine to form molecules and these elements are joined together by  chemical bonds i.e covalent bond in this molecule so option A is correct 
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3 years ago
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Answer:

Preventing Unknown Chemicals

Label all chemical containers, including beakers, flasks, vials, and test tubes.

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3 years ago
2.
Valentin [98]

Answer:

The correct answer is: It loses electrons.

Explanation:

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6 0
4 years ago
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