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garri49 [273]
3 years ago
14

Help plz! its a science question

Chemistry
2 answers:
vesna_86 [32]3 years ago
8 0

i dont know nothing about salt but all i know is that your eyes are super beautiful

Tresset [83]3 years ago
3 0

Iron fillings can be separated as they are magnetic. Use a magnet to separate the iron fillings away.

Salt can be separated away as they are soluble in water.

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Passenger airplanes take off in the troposphere but can eventually move into
zhuklara [117]
Well that is because the stratosphere has lower temperatures and low air density. This gives the airplane less air pressure and with low air density they can fly faster :) Hope this helps.
5 0
2 years ago
A gas sample at stp contains 1.15 g oxygen gas and 1.55 g nitrogen gas.what is the volume of the gas sample?
ss7ja [257]
O2=32 g/ mol
1.15/32=0.035
N2=28 g/mol
1.55/28=0.055
in STP every 22.4 litters is 1 mol

4 0
3 years ago
Read 2 more answers
The table shows the average distance between the molecules of a substance in the solid, liquid, and gaseous states.
Pavlova-9 [17]

Answer:

Y > X > Z

Explanation:

The intermoecular forces refer to forces that exist between molecules of a substance. They are the secondary bond forces that hold particles of a substance together in a particular state of matter.

The shorter the distance between molecules, the greater the magnitude of intermolecular force between the molecules.

The molecules of Y are at the shortest distance from each other hence they have the highest magnitude of intermolecular forces. Followed by X and lastly Z with the greatest distance between the largest intermolecular distance.

7 0
3 years ago
What is the value of the activation energy of the uncatalyzed reaction? Express your answer to three significant figures and inc
goblinko [34]

Answer:

175 kJ

Explanation:

Activation energy can be defined as the potential energy that is needed to change reactants to products. This is the minimum energy required for the chemical reaction to take place. Thus, using the given figure:

Activation energy = activation complex - reactant energy

In the given figure, activation complex = 400 kJ

reactant energy = 225 kJ

Therefore:

Activation energy = 400 - 225 = 175 kJ

3 0
3 years ago
Read 2 more answers
Question: If red dye is added to cold water and blue dye is added to warm water, which dye will
vlada-n [284]

Answer:

Blue dye spreads out quicker

Explanation:

This is because the dye gets spread out by water molecules. Warm water has faster moving water molecules than cold water.

6 0
3 years ago
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