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Vanyuwa [196]
3 years ago
6

What does it mean when say that a 200-ml sample and a 400-ml sample of a solution of salt have the same

Chemistry
1 answer:
raketka [301]3 years ago
7 0

Answer:

<em>Read explanation.</em>

Explanation:

Molarity is a unit used to measure the \frac{solute}{solution} ratio per unit volume of the solution. So, in other words, and in our case, we call it the \frac{moles~of~salt}{per~ml~of~solution} ratio.

So, the amount of solute (moles of salt) per ml of solution will be the same, but the number of moles in each solution will be obviously different.

Hope it helped,

BiologiaMagister

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Near Tatooine's famous Mos Eisley Space port you found a 520.79 mL block of gold. What is the mass in kilograms of this block?
postnew [5]

Answer:

10.051kg of gold is the mass in kilograms

Explanation:

The density of gold is 19.3g/mL. To solve this question we need to convert the volume of the block of gold to grams using its density. Then, we must convert grams to kilograms using the equivalence factor (1000g = 1kg):

<em>Mass in grams:</em>

520.79mL * (19.3g / mL) = 10051g of gold

<em>Mass in kilograms:</em>

10051g of gold * (1kg / 1000g) = 10.051kg of gold

3 0
3 years ago
For the following reaction, calculate how many moles of each product are formed when 4.05 g of water is used.
timurjin [86]

Answer:

A. 0.225 mole of H₂

B. 0.113 mole of O₂.

Explanation:

We'll begin by calculating the number of mole in 4.05 g of water (H₂O). This can be obtained as follow:

Mass of H₂O = 4.05 g

Molar mass of H₂O = (2×1) + 16 = 2 + 16 = 18 g/mol

Mole of H₂O =?

Mole = mass /Molar mass

Mole of H₂O = 4.05 / 18

Mole of H₂O = 0.225 mole

Next, the balanced equation.

2H₂O —> 2H₂ + O₂

From the balanced equation above,

2 moles of H₂O produced 2 moles of H₂ and 1 mole of O₂.

A. Determination of the number of mole hydrogen produced.

From the balanced equation above,

2 moles of H₂O produced 2 moles of H₂.

Therefore, 0.225 mole of H₂O will also produce 0.225 mole of H₂.

B. Determination of the number of mole oxygen produced.

From the balanced equation above,

2 moles of H₂O produced 1 mole of O₂.

Therefore, 0.225 mole of H₂O will produce = (0.225 × 1)/2 = 0.113 mole of O₂.

Thus, 0.113 mole of O₂ is produced.

7 0
3 years ago
Electrons are charged particles. Moving charged particles are a current. There is a current of electrons flowing through a coppe
Naddik [55]

Answer:

As the electrons flow through the wire, <em>electric current </em>is generated around the wire.

Explanation:

The rate of flow of charged particles in a given time is termed as the flow of current. Mostly the charge carriers are termed as electrons in a conductor. So the flow of electrons or movement of charged particles in a given time is the generation of electric current in that current. As the ratio of charge to time at which the charge is moving from one point to another is termed as the current flow in that time.

Current=\frac{Charge}{Time}

Thus, in the present case of electrons flowing in that wire will lead to generating of electric current in the opposite direction around the wire.

6 0
3 years ago
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The layer of the Earth that the lithospheric plates move on top of is called the
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Answer:

A. Lithosphere

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Like Earth, the moon
dedylja [7]
Um all? i’m confused
5 0
3 years ago
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