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guajiro [1.7K]
3 years ago
12

What is the equation for the reaction between excess dry oxygen and iron fillings​

Chemistry
1 answer:
gtnhenbr [62]3 years ago
6 0

Answer:

Fe2 + O2 > FeO

Explanation:

I don't know how to make the letters small...

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(02.01 MC)
Rina8888 [55]

Answer:

C. Particle size

Explanation:

The sand, which has smaller particles, will go through the sieve, while the rice (with a larger particle size) will not

4 0
2 years ago
An aqueous solution is 40.0 % by mass hydrochloric acid, HCl, and has a density of 1.20 g/mL. The mole fraction of hydrochloric
vivado [14]

Answer:

The molar concentration of HCl in the aqueous solution is 0.0131 mol/dm3

Explanation:

To get the molar concentration of a solution we will use the formula:

<em>Molar concentration = mass of HCl/ molar mass of HCl</em>

<em></em>

Mass of HCl in the aqueous solution will be 40% of the total mass of the solution.

We can extract the mass of the solution from its density which is 1.2g/mL

We will further perform our analysis by considering only 1 ml of this aqueous solution.

The mass of the substance present in this solution is 1.2g.

<em>The mass of HCl Present is 40% of 1.2 = 0.48 g.</em>

The molar mass of HCl can be obtained from standard tables or by adding the masses of Hydrogen (1 g) and Chlorine (35.46 g) = 36.46g/mol

Therefore, the molar concentration of HCl in the aqueous solution is 0.48/36.46 = 0.0131 mol/dm3

7 0
3 years ago
Why are metals <br> electropositive in nature<br>​
Mariana [72]

Answer:

The tendency of metals to lose electrons inorder to get stability is called electropositive nature ofmetals. In general most of the metalslose electrons from their valence shell due to weak force of attraction on the outermost shell.

7 0
3 years ago
Which functional group is found in an ESTER?
Zielflug [23.3K]

Answer:

its hydroxy and alkoxy

Explanation:

ester is mainly formed by substitution reaction of carboxylic acid and alcohol

8 0
3 years ago
I'm just looking for someone to check my answers on this and correct me if I'm wrong :)
Llana [10]
I believe you are right
5 0
3 years ago
Read 2 more answers
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