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2 years ago

Which subatomic particles are located in the nucleus of a carbon atom?

Chemistry

2 answers:

Papessa [141]2 years ago

5 0

Answer is (3) protons and neutrons.

(P.S. The outer part contains the electrons)

alukav5142 [94]2 years ago

3 0

Not just carbon atoms, but every single other atom has protons and neutrons in their nucleus. (3) is the correct one.
Hope this would help :))

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Whats the meaning Speed ? and the meaning of of Motion?

xxMikexx [17]

Speed ; the rate at which someone or something is able to move or operate.

Motion; the action or process of moving or being moved

5 0

3 years ago

Need help please?!!!!!

puteri [66]

(a) 33.6 L of oxygen would be produced.

(b) 106 grams of $Na_2CO_3$ would be needed

<h3>Stoichiometric calculations</h3>

1 mole of gas = 22.4 L

(a) From the equation, 2 moles of $KClO_3$ produce 3 moles of $O_2$ . 1 mole of $KClO_3$ will, therefore, produce 1.5 moles of $O_2$ .

1.5 moles of oxygen = 22.4 x 1.5 = 33.6 L

(b) 22.4 L of $CO_2$ is produced at STP. This means that 1 mole of the gas is produced.

From the equation, 1 mole of $CO_2$ requires 1 mole of $Na_2CO_3$ .

Molar mass of $Na_2CO_3$ = (23x2)+ (12)+(16x3) = 106 g/mol

Mass of 1 mole $Na_2CO_3$ = 1 x 106 = 106 grams

More on stoichiometric calculations can be found here: brainly.com/question/27287858

#SPJ1

6 0

1 year ago

Dihydrogen dioxide decomposes into water and oxygen gas. Calculate the amounts requested if 1.34 moles of dihydrogen dioxide rea

a_sh-v [17]

Answers:

a. Moles of oxygen formed: 0.670 mol

b. Moles of water formed: 1.34 mol

c. Mass of water formed: 24.1 g

d. Mass of oxygen formed: 21.4 g

Explanation:

Dihdyrogen dioxide is the chemical name for a compound made of two hydrogen atoms and two oxide atoms, i.e. H₂O₂, which is also known as hydrogen peroxide or oxygenated water.

The decomposition reaction of dihydrogen dioxide into water and oxygen gas is represented by the balanced chemical equation:

$2H_2O_2(l)\rightarrow 2H_2O(l)+O_2(g)$

The mole ratios derived from that balanced chemical equation are:

2 mol H₂O₂ : 2 mol H₂O : 1 mol O₂

a. Moles of oxygen formed

Set the proportion using the theoretical mole ratio of H₂O₂ to O₂ and the amount of moles of dyhydrogen dioxide that react:

$2\text{ mol }H_2O_2/1\text{ mol }O_2=1.34\text{ mol }H_2O_2/x$

When you solve for x, you get:

x = 1.34 mol H₂O₂ × 1 mol O₂ / 2 mol H₂O₂ = 0.670 mol O₂

b. Moles of water formed

Set the proportion using the theoretical mole ratio of H₂O₂ to H₂O and the amount of moles of dyhydrogen dioxide that react:

$2\text{ mol }H_2O_2/2\text{ mol }H_2O=1.34\text{ mol }H_2O_2/x$

When you solve for x, you get:

x = 1.34 mol H₂O₂ × 2 mol H₂O / 2 mol H₂O₂ = 1.34 mol H₂O

c. Mass of water formed

Using the number of moles of water calculated in the part b., you calculate the mass of water formed, in grams, using the molar mass of water:

Molar mass of water = 18.015 g/mol

Number of moles = mass in grams / molar mass

⇒ mass in grams = number of moles × molar mass

⇒ mass in grams = 1.34 mol × 18.015 g/mol = 24.1 g

d. Mass of oxygen formed

Using the number of moles of oxygen determined in the part a., you calculate the mass in grams using the molar mass of O₂.

Molar mass of O₂ = 32.00 g/mol

mass = molar mass × number of moles

mass = 32.00 g/mol × 0.670 mol = 21.4 g.

5 0

2 years ago

Where is energy stored in a molecule

e-lub [12.9K]

Answer:

Energy is stored in the covalent bonds :)

Explanation:

Energy, potential energy, is stored in the covalent bonds holding atoms together in the form of molecules. This is often called chemical energy. Except at absolute zero (the coldest temperature it is possible to reach), all molecules move.

Please Mark Be Brainliest Thanks

7 0

2 years ago

Read 2 more answers

How can something with different atoms be a pure substance and not a mixture

ehidna [41]

Answer: if it has to have a definite physical and chemical properties. Mixture is when two atoms combine but not chemically.

Explanation:

3 0

3 years ago