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2 years ago

What is a direct combination reaction?

2 answers:

8 0

Answer: is a type of chemical reaction in which two or more simple substances combine to form a more complex product.

Explanation:

Leona [35]2 years ago

4 0

It is one of the most common types of chemical reactions and can also be called a synthesis reaction. In this reaction, two or more chemical species combine to form a more complex product.

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In chromatography why is it important to remove the strip of paper until it reaches the end

Zielflug [23.3K]

<h3>Answer:</h3>

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Because the water doesn't have to reach all the way to the top.

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2 years ago

Nitrous oxide (N2O) is used as an anesthetic (laughing gas) and in aerosol cans to produce whipped cream. It is also a potent gr

scZoUnD [109]

Answer:

five half lives

Explanation:

Half-life is the time required for a quantity to reduce to half of its initial value.

How many half lives it would take to reach 3.13% form 100% of it's initial concentration:

100% - 50% : First Half life

50% - 25%: Second Half life

25% - 12.5%: Third Half life

12.5% - 6.25%: Fourth Half life

6.25% - 3.125%: Fifth Half life

This means it would take five half lives to get to 3.125% (≈ 3.13%) of it's original concentration.

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2 years ago

Which two formulas represent compounds

SVEN [57.7K]

CO2 ; H20- They are the only ones that, on both sides, combined with another element and bonding of atoms

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2 years ago

How many moles of Na₂CO₃ required to create 9.54 liters of a 3.4 M solution

GarryVolchara [31]

Answer:

The answer to your question is 32.44 moles

Explanation:

Data

moles of Na₂CO₃ = ?

volume = 9.54 l

concentration = 3.4 M

Formula

Molarity = $\frac{number of moles}{volume}$

Solve for number of moles

number of moles = Molarity x volume

Substitution

Number of moles = (3.4)( 9.54)

Simplification

Number of moles = 32.44

3 0

2 years ago

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How many moles are in 1.2×10^3g of ammonia

Diano4ka-milaya [45]

Answer:8

Explanation:

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2 years ago

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