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Darya [45]
3 years ago
6

I WILL GIVE U BRAINLIEST

Chemistry
2 answers:
PtichkaEL [24]3 years ago
7 0

Answer:

guidelines

Explanation:

It gives perameters for her abilities :)

gayaneshka [121]3 years ago
3 0
I believe the answer would be purview, as its definition is “the scope of the influence or concerns of something.” It would be regarded as the capabilities of of that department. Please mark as Brainliest answer! :-)
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PLEASE HELP ME ASAPPPPP!!!!!!!!
Viefleur [7K]

Answer: time

Explanation: hi

7 0
3 years ago
A chemist measures the enthalpy change ?H during the following reaction: Fe (s) + 2HCl (g) ? FeCl2 (s) + H2 (g) =?H?157.kJ Use t
erik [133]

Correct Question:

A chemist measures the enthalpy change ΔH during the following reaction: Fe(s) + 2HCl(g)-->FeCl2(s) + H2 ΔH=-157.0 kJ. Use this information to complete the table below. Round each of your answers to the nearest kJ/mol

Answer:

-314 kJ

+628 kJ

+157 kJ

Explanation:

The enthalpy change of a reaction measures the amount of heat that is lost or gained by it. If ΔH >0 the heat is gained, and the reaction is called endothermic, if ΔH<0, the heat is lost, and the reaction is called exothermic.

If the reaction is inverted, the value of ΔH is inverted too (the opposite endothermic reaction is exothermic), and if the reaction is multiplied by a constant, ΔH will be multiplied by it too.

1) 2Fe(s) + 4HCl --> 2FeCl2(s) + 2H2(g)

This reaction is the product of the given reaction by 2, so

ΔH = 2*(-157) = -314 kJ

2) 4FeCl2(s) + 4H2(g) --> 4Fe(s) + 8HCl(g)

This reaction is the inverted reaction given multiplied by 4, so

ΔH = 4*(157) = +628 kJ

3) FeCl2(s) + H2(g) --> Fe(s) + 2HCl

This reaction is the inverted reaction given, so

ΔH = +157 kJ

4 0
3 years ago
I'd: 9872093250, password: qqqqq, join the meeting​
Sonja [21]
You keep on saying join fast wdym?!
4 0
3 years ago
How many grams of iron are needed to produce 3 g of iron(III) chloride?
Ivanshal [37]

Answer:

5 its just what i do

Explanation:

4 0
3 years ago
Write the name for each of the following chemical formulas. <br> d. P3N5 (for doping semiconductors)
rewona [7]

Answer:

Triphorphorus Pentanitride

Explanation:

since there are three phosphorus use the prefix tri-, since there are five nitrogen use the prefix penta. tri=3, penta=5. then add a suffix -ide to the end of nitrogen. that will give you triphosphorus pentanitride.

3 0
2 years ago
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