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BARSIC [14]
3 years ago
12

Please help me with this homework

Chemistry
2 answers:
Lunna [17]3 years ago
5 0

Answer:

Explanation:

hshxnklsmxled

almond37 [142]3 years ago
4 0

Answer:

Al

N

O

Zn

C

He

Ne

Ar

I

Ph

B

S

Ch

Fe

K

Li

-

Na

Ag

Au

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Viefleur [7K]
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3 years ago
Which of the following results in a chemical change in matter?
kodGreya [7K]
You have a raw egg you put it in a hot pan boom cooked egg most chemical changes are nonreversibal <span />
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3 years ago
What is he empirical formula for the compound that is of 1.85 moles of nitrogen and 4.63 miles of oxygen
BartSMP [9]

The empirical formula is N₂O₅.

The empirical formula is the <em>simplest whole-number ratio of atoms</em> in a compound.  

The ratio of atoms is the same as the ratio of moles, so our job is to calculate the <em>molar ratio of N:O</em>.  

I like to summarize the calculations in a table.  

<u>Element</u> <u>Moles</u>  <u>Ratio¹ </u>  <u> ×2²  </u>  <u>Integers</u>³

     N        1.85    1             2             2

     O        4.63    2.503   5.005     5

¹To get the molar ratio, you divide each number of moles by the smallest number (1.85).

²Multiply these values by a number (2) that makes the numbers in the ratio close to integers.

³Round off the number in the ratio to integers (2 and 5).

The empirical formula is N₂O₅.

4 0
3 years ago
Which of these metals is the MOST reactive?<br> Lithium <br> Copper<br> Gold <br> Calcium
lutik1710 [3]

Answer:

The correct answer to you your question is Potassium

Explanation:

Potassium is the most reactive

7 0
3 years ago
A sample of a compound that contains only the elements C, H, and N is completely burned in O2 to produce 44.0 g of CO2, 45.0 g o
PolarNik [594]

Explanation:

what you have to do is to multiply the given grams with the ratio of grams of that certain element in it's full compound in order to isolate the compound and get the element.

because the question did not specify how many grams of NO2 is formed, we can assume that the mass is neglegible, thus 1 mole was assigned to Nitrogen.

3 0
3 years ago
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