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3 years ago

What is a atom and what do atom do in the world

2 answers:

6 0

In all atoms, the number of protons and the number of electrons is always the same. The number of neutrons is very roughly the same as the number of protons, but sometimes it's rather more. The number of protons in an atom is called the atomic number and it tells you what type of atom you have.

SVEN [57.7K]3 years ago

3 0

Answer:

Atoms make up everything in the known universe.

Explanation:

Atoms have different configurations, meaning that they have a different number of electrons surrounding the atom. There are actually two separate concentric rings around the atom, but that's not important to the answer. These separate atoms bind together to make molecules, which band together in different ways to form solids, liquids, gasses, and everything in between. In other words, we are all made up of around seven billion billion billion (7*10^27) atoms.

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The first step in the process used to recover zinc metal from zinc sulfide ore is the reaction of zinc sulfide with oxygen gas t

Vikentia [17]

Answer : The mass of oxygen consumed in the reaction is 14.6 grams.

Explanation :

First we have to calculate the change in moles of oxygen.

Formula used :

$w=\Delta nRT$

or,

$\Delta n=\frac{w}{RT}$

where,

w = work done = 850.1 J

$\Delta n$ = change in moles of gas = ?

R = gas constant = 8.314 J/mol.K

T = temperature = 675 K

Now put all the given values in the above formula, we get:

$\Delta n=\frac{850.1J}{(8.314J/mol.K)\times (675K)}=0.152mol$

Now we have to calculate the mass of oxygen consumed.

The balanced chemical reaction is,

$2ZnS(s)+3O_2(g)\rightarrow 2ZnO(s)+2SO_2(g)$

Here, the volume changes of solids can be ignored.

From the balanced chemical reaction, we conclude that

The number of moles oxygen required for the complete reaction = 3

Change in mole of oxygen = 0.152 mol

Molar mass of $O_2$ = 32 g/mol

So,

The mass of oxygen consumed = 3 x 0.152 mol x 32 g/mol = 14.6 g

Therefore, the mass of oxygen consumed in the reaction is 14.6 grams.

4 0

3 years ago

Regarding water molecules, adhesion is best described as * the attraction water molecules have to other water molecules the attr

Helen [10]

Answer:

the attraction water molecules have to other surfaces

Explanation:

Adhesion is defined as the attractive forces between unlike substances, e.g water moving up a capillary tube.

Adhesion is the tendency of dissimilar particles or surfaces to cling to one another(Wikipedia).

So, what we mean by adhesion in this context, is the attraction water molecules to other surfaces.

3 0

3 years ago

Give the word equation for the neutralization reaction of an acid and a base.

Grace [21]

Answer:Acid+Base--> salt+water

Explanation:the reaction between acids and bases is called neutralization and will always produce salt and water

7 0

3 years ago

In the past, investigators would look at which two types of cues when trying to determine if someone was lying?

jekas [21]

Verbal and nonverbal.

They would look for shakiness of the voice (verbal) or darting eyes (nonverbal), and other things to that same effect.

7 0

4 years ago

Read 2 more answers

Where do producers get their energy?

Ahat [919]

The answer is letter b. from the sunlight. Plants are also referred as producers. Typically, plants gets their energy from the sun, wherein it helps them produce their own food, through the sunlight, the carbon dioxide present, the process wherein the producers undergo is known as photosynthesis.

3 0

4 years ago

What is a atom and what do atom do in the world ​

What is a atom and what do atom do in the world