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3 years ago

Why do you think we are able to study the atom in the modern world?

Chemistry

1 answer:

andriy [413]3 years ago

6 0

Advancement in technology to help with detailed studies

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A chemist working for Udensi industries wants to create a new ink for tattoos and cosmetics. Determine the theoretical yield of

leva [86]

Answer:

35.36 g

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

8Fe + S₈ —> 8FeS

Next, we shall determine the mass of Fe that reacted and the mass of FeS produced from the balanced equation. This can be obtained as follow:

Molar mass of Fe = 56 g/mol

Mass of Fe from the balanced equation = 8 × 56 = 448 g

Molar mass of FeS = 56 + 32 = 88 g/mol

Mass of FeS from the balanced equation = 8 × 88 = 704 g

SUMMARY:

From the balanced equation above,

448 g of Fe reacted to produce 704 g of FeS.

Finally, we shall determine the theoretical yield of FeS as follow:

From the balanced equation above,

448 g of Fe reacted to produce 704 g of FeS.

Therefore, 22.5 g of Fe will react to produce = (22.5 × 704)/448 = 35.36 g of FeS.

Thus, the theoretical yield of FeS is 35.36 g

3 0

3 years ago

When butter is melted, the _____________ of the butter has changed, but the substance is still butter?

sergeinik [125]

The state of butter has changed. it only melted, and no new substance is formed or mixed with another substance

7 0

3 years ago

Give the ion symbol for the ion that has 27 protons and 24 electrons.

Natalija [7]

Answer:

Z³⁺

Explanation:

The ion symbol can be depicted as Z³⁺ .

In this atom, the number of protons is 27 and the number of electrons is 24.

Protons are the positively charged particles within an atom.

Electrons are the negatively charged particles within an atom.

To find the charge;

Charge = Number of protons - number of electrons

Charge = 27 - 24 = +3

The atom is positively charged and it can be depicted as Z³⁺

7 0

3 years ago

What mass of h2o is formed when h2 reacts with 384 grams of o2?

Tasya [4]

Answer is: mass of water is 432 grams.
Chemical reaction: 2H₂ + O₂ → 2H₂O.
m(O₂) = 384 g.
M(O₂) = 2 · 16 g/mol = 32 g/mol, molar mass.
n(O₂) = m(O₂) ÷ M(O₂).
n(O₂) = 384 g ÷ 32 g/mol.
n(O₂) = 12 mol, amount of substance.
From chemical reaction: n(O₂) : n(H₂O) = 1 : 2.
n(H₂O) = 12 mol · 2 = 24 mol.
m(H₂O) = n(H₂O) · M(H₂O).
m(H₂O) = 24 mol · 18 g/mol.
m(H₂O) = 432 g.

8 0

3 years ago

The chemical formula for cesium oxide is Cs2O. What is the charge of cesium? +1 +2 –1 –2

aalyn [17]

The Charge Of Cesium Is +1

5 0

4 years ago

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