The average human body temperature is 98.6 °

What is the density of a liquid if the volume is 25 mL and the mass is 20.0 g?

LenKa [72]

Answers:

Density = 0.8 g/mol.

Given data:

v = 25 ml

m = 20 g

δ = ?

Solution:

Formula for calculating density is given as,

Density = Mass / Volume

putting values

Density = 20.0 g / 25 ml

Density = 0.8 g/mol.

3 0

3 years ago

In an atom, the number of neutrons determines most specifically the ________.

lord [1]

In an atom, the number of neutrons determines most specifically the isotopes of an element.

<h2>Further Explanation</h2><h3>An atom </h3>

An atom is defined as the smallest particle of an element that can take part in a chemical reaction.
Atoms are made of energy shells and the inner nucleus.
It is also made up of subatomic particles, protons and neutrons.

<h3>Neutrons </h3>

They are sub-atomic particles in an atom that are found in the nucleus of an atom. They have a zero charge or no charge.
Neutrons are slightly heavier than protons.
The number of protons and neutrons in a nucleus of an atom results to the atomic mass number of an atom. Like protons they only take part in nuclear reactions.

<h3>Protons</h3>

Protons are subatomic particles that are found in the nucleus of an atom. They are positively charged. with a charge of +1.
The number of protons differ from one element to another and thus used as the atomic number of an individual element.
The nucleus of an atom is positively charged due to the positive charge of the protons.
Additionally, protons do not take part in chemical reactions but in nuclear reactions.

<h3>Electrons </h3>

They are found orbiting the nucleus on energy shells based on Clouds’ theory. Electrons are negatively charged each with a charge of -1.
The number of electrons and protons in a neutral atom are equal. Additionally they have the least mass of the three sub-atomic particles.
Electrons are the only sub-atomic particles that take part in chemical reactions.

<h3>Isotopes </h3>

Isotopes are atoms of the same element that have the same mass number but different atomic number.

<h3>Mass number;</h3>

Mass number is the sum of the number of protons and neutrons in the nucleus of an atom of an element.

Keywords: Atom, sub-atomic particles, electrons, protons, neutrons, isotopes

<h3>Learn more about:</h3>

Sub-atomic particles: brainly.com/question/12762384
Electrons: brainly.com/question/1264222
Protons: brainly.com/question/1264222
Neutrons: brainly.com/question/1264222
Mass number: brainly.com/question/2152789
Atomic number: brainly.com/question/8100107

Level: High school

Subject: Chemistry

Topic: Atomic structure

4 0

3 years ago

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I Need help asap i will give brainliest

Flauer [41]

Answer:

It maintains a constant internal temperature.

Explanation:

Our body tries its hardest to maintain a constant internal temperature. This is because if we get to warm or cold it is unhealthy. If your body senses that it is getting to warm or cold it will try to correct itself.

3 0

3 years ago

I know this isn't school-related but Is all-purpose flour the same as self-rising flour?

Rainbow [258]

Answer:yes

Explanation:

I am a baker owo

4 0

3 years ago

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What mass of sucrose (C12H22O11) should be combined with 488 g of water to make a solution with an osmotic pressure of 8.00 atm

VikaD [51]

Answer:

56 g of sucrose is the mass needed

Explanation:

Formula for osmotic pressure → π = M . R . T

8 atm = M . 0.082 L.atm/mol.K . 290 K

8 atm / (0.082 L.atm/mol.K . 290 K) = M → 0.336 mol/L

Let's determine the mass of sucrose that represents 0.336 mol

0.336 mol . 342 g / 1mol = 114.9 g

This is the mass that corresponds to 1L of solution, but we have 0.488 L

Solution density = 1 g/mL → 488 g are contained in 488 mL.

488 mL . 1L / 1000 mL = 0.488 L

Let's make a rule of three:

1L is the volume for 114.9 g of sucrose

In 0.488 L of volume, we need a mass of (0.488L . 114.9 g) 1L = 56 g

5 0

3 years ago

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