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3 years ago

I WILL MARK YOU BRAINLYEST

Chemistry

2 answers:

Agata [3.3K]3 years ago

3 0

Answer:

Osmosis is the diffusion of ⇒ water across a selectively permeable membrane. This process does not require the cell to use ⇒ energy to move molecules. It is an example of ⇒ passive transport.

Explanation:

marishachu [46]3 years ago

3 0

Answer:

Osmosis is the diffusion of

WATER

across a selectively permeable membrane. This process does not require the cell to use

ENERGY

to move molecules. It is an example of

PASSIVE

transport.

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Type the correct answer in the box. Express your answer to three significant figures. This balanced equation shows the reaction

Ratling [72]

Answer:

514.5 g.

Explanation:

The balanced equation of the reaction is: 2NaOH + H₂SO₄ → Na₂SO₄ + 2H₂O.

It is clear that every 2.0 moles of NaOH react with 1.0 mole of H₂SO₄ to produce 1.0 mole of Na₂SO₄ and 2.0 moles of 2H₂O.

Since NaOH is in excess, so H₂SO₄ is the limiting reactant.

We need to calculate the no. of moles of 355.0 g of H₂SO₄:

n of H₂SO₄ = mass/molar mass = (355.0 g)/(98.0 g/mol) = 3.622 mol.

Using cross multiplication:

∵ 1.0 mol H₂SO₄ produces → 1.0 mol of Na₂SO₄.

∴ 3.622 mol H₂SO₄ produces → 3.662 mol of Na₂SO₄.

Now, we can get the theoretical mass of Na₂SO₄:

∴ mass of Na₂SO₄ = no. of moles x molar mass = (3.662 mol)(142.04 g/mol) = 514.5 g.

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3 years ago

ASAP I WILL GIVE BRAINLIEST!Which arrow represents the change of state described above? The diagram shows changes of state betwe

lilavasa [31]

Answer:

Explanation:

The atoms lose energy during a change of state, but can still slide past each other; gas to a liquid.

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3 years ago

Lactic acid results from which of the following?

vazorg [7]

Explanation:

Lactic acid is formed during the breakdown of glucose. This is sometimes called "blood sugar."

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3 years ago

Read 2 more answers

Explain Charles law

kodGreya [7K]

"Charles Law" is the relationship between "volume-temperature" (V ∝ T).

<u>Explanation</u>:

Charles Law is basically volume-temperature relationship (V ∝ T). French scientist “Jacques Charles” in 1787 studied effect of temperature on the volume of gases at constant pressure, which described how gases manage to expand when heated. Law stated as “At constant pressure, the volume of a given "mass" of a gas decreases or increases by 1/273 of its volume at $0^{\circ} \mathrm{C}$ for each one degree rise or fall in temperature”. Formula derived from law is as follows: $\mathbf{V}_{\mathbf{t}}=\mathbf{V}_{0}[\mathbf{1}+\mathbf{t} / \mathbf{2} 7 \mathbf{3}]$ here ${V}_{0}$ is volume of given mass of a gas at $0^{\circ} \mathrm{C}$ , ${V}_{t}$ is its volume at any temperature $t^{\circ} \mathrm{C}$ . Application of Charles law is hot air balloons.

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2 years ago

What is neon: metal,non-metal,or metalloid?

iren [92.7K]

Neon is noble gas. It is not a metal, or a metalloid. Neon is a non-metal.

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3 years ago