The mass number of an element is equal to

Chemistry

2 answers:

Snezhnost [94]3 years ago

7 0

Answer:

We can say that the mass number (A) is the sum of the masses of the particles in an atom, but since the mass of the electron is negligible compared to the masses of protons and neutrons, the mass number is the sum of the masses of protons (Z) and neutrons (n).

Flura [38]3 years ago

5 0

Answer:

I think Electorn

Explanation:

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Which type of bond will most likely be found in hbr?

Komok [63]

To know that compare the electronegativitis of the two elements.

The electronegativity of H is 2.2
The electronegativity of Br is 2.96

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4 years ago

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Consider that you collect hydrogen gas over water in an upside-down test tube. If the atmospheric pressure is 1.00, which of the

kkurt [141]

Answer:

Correct answers are B and F.

Explanation:

Inside the test tube after a certain time, the pressure inside of the test tube must be equal to the atmospheric pressure, the hydrogen displaces the water inside the tube until the pressure is the same with the atmosphere.

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3 years ago

How is this called ? can someone help me please?

Hitman42 [59]

That is called chemistry

4 0

2 years ago

WILL GIVE NRAINLIEST!! NEED HELP FAST

Elis [28]

Hello,

I believe this is (25 g Al) * (1 mol H / 1.008 g H) = 24.8015 mol H

Hopefully that was the right approach.
I thought that if one mole of Al is
26.982 g, then the numbers of moles for H (1.008 g/mol) would be about 25 mol.
If it doesn’t make sense or if you have resources/notes to which I can refer, I’ll see what I can do!

Good luck!

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3 years ago

A 6.1-kg solid sphere, made of metal whose density is 2600 kg/m3, is suspended by a cord. When the sphere is immersed in a liqui

deff fn [24]

Answer:

Density of the liquid = 1470.43 kg/m³

Explanation:

Given:

Mass of solid sphere(m) = 6.1 kg

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Thus volume of the liquid :

$Volume(V)=\frac{Mass(m)}{Density (\rho)}$