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Elena-2011 [213]
3 years ago
8

Based on the reaction, identify the products.

Chemistry
2 answers:
solong [7]3 years ago
8 0

The product is Be and it is a replacement reaction.

igomit [66]3 years ago
3 0

Answer:

The reactants are MgF₂ and Be.

This is a single displacement reaction.

Explanation:

Chemical reactions are written like this:

reactant + reactant  =>  product + product

There may be more or less reactants and products on each side, separated by + the plus sign. The reactants are on the left and the products are on the right.

In the equation BeF₂ + Mg  =>  MgF₂ + Be, <u>the products (on the right side) are MgF₂ and Be</u>.

Since the total reactants are equal to the total products, every element that you see on the left must also appear on the right. On the left, the question gave you the elements "Be", "F" and "Mg". On the right, "Be" was missing, so it must be the missing product.

This is a <u>single displacement reaction</u> because one element that was in a pair was replaced by another.

All single displacement reactions look like this:

AB + C = AC + B          An element that was paired up switched places with another element that was not paired up.

In this reaction, "Be" was displaced. It started the reaction paired up with "F", but it was replaced by "Mg".

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Savatey [412]

Answer:

P = 13.5 atm

Explanation:

Given that

No. of moles, n = 20 moles

Volume of nitrogen gas = 36.2 L

Temperature = 25°C = 298 K

We need to find the pressure of the gas. Using the ideal gas equation

PV = nRT

Where

R is gas constant, R=0.082057\ L-atm/K-mol

So,

P=\dfrac{nRT}{V}\\\\P=\dfrac{20\times 0.082057\times 298}{36.2 }\\\\P=13.5\ atm

so, the pressure of the gas is equal to 13.5 atm.

7 0
2 years ago
The amount of heat energy required to raise the temperature of a unit mass of a material one degree is
kherson [118]
I think its B- A Joule 
7 0
3 years ago
3 points
VLD [36.1K]

Answer:

<h3>The answer is 8.29 %</h3>

Explanation:

The percentage error of a certain measurement can be found by using the formula

P(\%) =  \frac{error}{actual \:  \: number}  \times 100\% \\

From the question

actual density = 19.30g/L

error = 20.9 - 19.3 = 1.6

We have

p(\%) =  \frac{1.6}{19.3}  \times 100 \\  = 8.290155440...

We have the final answer as

<h3>8.29 %</h3>

Hope this helps you

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Answer:

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Because of its high reactivity which element is normally obtained by the electrolysis
katrin [286]

<span>Lithium has a property of high reactivity and to obtain lithium is through electrolysis of its fused salts. Because lithium is very reactive, it is not found free so electrolysis is use to split it apart to get it.  Moreover, Lithium is an alkali metal with single valence electron that is easily given up to form cation, which make it a good conductor of heat and electricity.</span>

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