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Serggg [28]
3 years ago
10

Which is a component of John Dalton’s atomic theory?

Chemistry
2 answers:
navik [9.2K]3 years ago
8 0

Answer: lol the answer is A

Explanation:

i’m just smart like that , thought i should give y’all a clue

Alexus [3.1K]3 years ago
5 0

Answer:

The ratio of atoms in a compound is fixed.

Explanation:

its a

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Which of the following are elements nd which are compounds H2,HCI,Na,Al2O3,H2O
stepan [7]
H2-element
HCl-compound
Na-element
Al2O3-compound
H2O-compound
6 0
3 years ago
For each of the following balanced chemical equations, calculate how many moles and how many grams of each product would be prod
natima [27]

Answer:

(a)

Moles of ammonium chloride = 0.5 mole

Mass of ammonium chloride formed = 26.7455 g

(b)

Mole of CS_2 = 0.125 mole

Mass = Moles * Molar mass = 0.125 * 76.139 g = 9.52 g

Mole of H_2S = 0.25 mole

Mass = Moles * Molar mass = 0.25 * 34.1 g = 8.525 g

Explanation:

(a)

For the first reaction:-

NH_3_{(g)}+HCl_{(g)}\rightarrow NH_4Cl_{(s)}

The mole ratio of the reactants = 1 : 1

0.5 moles of ammonia react with 0.5 moles of hydrochloric gas to give 0.5 moles of ammonium chloride

So, <u>Moles of ammonium chloride formed = 0.5 moles</u>

Molar mass of ammonium chloride = 53.491 g/mol

<u>Mass = Moles * Molar mass = 0.5 * 53.491 g = 26.7455 g</u>

(b)

For the first reaction:-

CH_4_{(g)}+4S_{(s)}\rightarrow CS_2_{(l)}+2H_2S_{(g)}

The mole ratio of the reactants = 1 : 4

It means

0.5 moles of methane react with 2.0 moles of sulfur to give 0.5 moles of Carbon disulfide and 1.0 moles of hydrogen sulfide gas.

But available moles of S = 0.5 moles

Limiting reagent is the one which is present in small amount. Thus, S is limiting reagent.

The formation of the product is governed by the limiting reagent. So,

4 moles of S produces 1 mole of CS_2

Thus,

0.5 moles of S produces \frac{1}{4}\times 0.5 mole of CS_2

<u>Mole of CS_2 = 0.125 mole</u>

Molar mass of CS_2 = 76.139 g/mol

<u>Mass = Moles * Molar mass = 0.125 * 76.139 g = 9.52 g</u>

4 moles of S produces 2 moles of H_2S

Thus,

0.5 moles of S produces \frac{2}{4}\times 0.5 mole of H_2S

<u>Mole of H_2S = 0.25 mole</u>

Molar mass of H_2S = 34.1 g/mol

<u>Mass = Moles * Molar mass = 0.25 * 34.1 g = 8.525 g</u>

<u></u>

7 0
2 years ago
When sunlight passes through a prism, the different wavelengths separate into a(n)________ of colors.
Masteriza [31]
When sunlight passes through a prism, the different wavelengths separate into a spectrum of colors.
7 0
3 years ago
Read 2 more answers
Investigations were carried out in a science lab to explore the topic of chemical and physical changes. Investigation A Step 1.
ozzi

Answer:

Investigation B, Step 2

Explanation:

The <em>colour change</em> is a good indication of a <em>chemical change</em>. The sugar molecules were most likely changing into something else.

Investigation A, Step 1. <em>Wron</em>g. The dissolving of salt is a <em>physica</em>l process.

Investigation A, Step 2. <em>Wrong</em>. You simply boiled off the water (a <em>physical</em> process) and recovered the salt.

Investigation B, Step 1. <em>Wrong</em>. The dissolving of sugar is a <em>physical</em> process.

4 0
3 years ago
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The first IE of neon (atomic number 10) is significantly higher than that of argon (atomic number 18) but significantly
lbvjy [14]

Explanation:

Different atoms binds their outermost shell electrons with different amount of energy.

The amount of energy required to remove an electron from an atom is the ionization energy.

  • Ionization energy measures the readiness of an atom to lose electrons.
  • From the given problem, we can infer that in group O the ionization energy decreases down the group.
  • Helium has the highest ionization energy.
  • Down a group on the periodic table, ionization energy decrease because:
  1.  atomic radii increases down the group.
  2. there is an increasing shielding/screening effect of inner shell electrons on the outermost shell electrons.

Learn more:

Ionization energy brainly.com/question/2153804

#learnwithBrainly

8 0
2 years ago
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