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3 years ago

How many atoms are in 5.8 moles of Li

Chemistry

1 answer:

alexira [117]3 years ago

8 0

Answer:

5.8 x 6.022x10^23 =3.49276x10^24

5.8 x 6.02x10^23 =3.4916x10^24

One mole of lithium (Li) is equal to 6.022 x 10^23 atoms of lithium.

Avogadro's constant

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Methane burns in oxygen to produce carbon dioxide and water. Which of the following represents a preliminary, unbalanced equatio

german

The correct option is: CH4 + O2 → CO2 + H2O.

In writing chemical equations, the reactants are usually written to the left of the equation of the reaction while the products are written to the right of the reaction. An arrow pointing in the right direction shows the direction of the reaction. In the question given above, methane and oxygen are the reactants while carbon dioxide and water are the products. The options that states the chemical reaction correctly is option 1.

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3 years ago

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What does lead ii acetate and hydrogen sulfide produce? and what type of reaction is it?

kati45 [8]

When Lead (II) acetate and Hydrogen sulfide react, they form Lead sulfide and Acetic acid. The reaction is a reduction-oxidation (redox) reaction.
The balanced chemical reaction is this:
Pb(C2H3O2)2 + H2S --> PbS + 2C2H4O2
And the net ionic reaction is this:
Pb2+ + S2- --> PbS

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3 years ago

If a bag of peas weighs 454 grams, how many peas would be in the bag?

OverLord2011 [107]

In a bag of peas that weighs 454 grams, there are between 1261 and 4540 peas.

The average pea weighs between 0.1 and 0.36 grams.

If we take the lower value (0.1 g/pea), the number of peas in 454 g is:

$454 g \times \frac{1pea}{0.1 g} = 4540pea$

If we take the higher value (0.36 g/pea), the number of peas in 454 g is:

$454 g \times \frac{1pea}{0.36 g} \approx 1261pea$

In a bag of peas that weighs 454 grams, there are between 1261 and 4540 peas.

You can learn more about conversion factors here: brainly.com/question/1844638

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3 years ago

What type of force is produced when two objects are in contact, then move (or try to move) past each other?

Gnesinka [82]

Answer:

A. Frictional

Explanation:

Friction is the force created when two solid objects in contact try to move past each other.

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4 years ago

What is the concentration of a solution formed when 4.00 grams of sodium hydroxide is dissolved to make 250cm cubed of solution

morpeh [17]

0.4M is the concentration of a solution formed when 4.00 grams of sodium hydroxide is dissolved to make a 250cm cubed solution.

Molar concentration, also known as molarity, quantity concentration, or substance concentration. Molarity is a unit used to describe the amount of a substance in a solution expressed as a percentage of its volume. The number of moles per liter, denoted by the unit symbol mol/L or mol/dm³ in SI units, is the most often used unit denoting molarity. Because the volume of most solutions very minimally changes with temperature owing to thermal expansion, using molar concentration in thermodynamics is frequently not practical.

The formula for molarity,

Molarity = (moles/vol) x 1000

= $\frac{4/40}{250}$ x 1000

= (0.1 / 250) x 1000

=0.4M

Learn more about molarity here:

brainly.com/question/14469428

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2 years ago