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Lostsunrise [7]
3 years ago
6

Is it called when a substance enters a gaseous phase without boiling?

Chemistry
2 answers:
Helen [10]3 years ago
3 0

Answer:

its called sublimation

algol133 years ago
3 0

Answer:

Boiling is a phase transition from the liquid phase to the gas phase that ... in what is called the “escaping tendency” of the molecules from the phase. ... into the gas phase from a solid or liquid by placing the substance in a closed, ... Gradually, Pw will rise as molecules escape from the liquid phase and enter the vapor phase.

Explanation:

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What is the concentration of an alcl3 solution if 150. ml of the solution contains 550. mg of cl- ion?
valina [46]

The concentration of AlCl3 solution if 150 ml of the solution contains 550 mg of cl- ion is 0.0344 M


calculation


concentration = moles /volume in liters


volume in liters = 150 /1000= 0.15 L


number of moles calculation

write the equation for dissociation of Al2Cl3

that is AlCl3 ⇔ Al^3+ + 3 Cl ^-


find the moles of Cl^- formed

moles =mass/molar mass

mass in grams= 550/ 1000 =0.55 grams

molar mass of Cl^- =35.5 g/mol


moles is therefore= 0.55/35.5 =0.0155 moles


by use of mole ration betweem AlCl3 to Cl^- which is 1:3 the moles of AlCl3 is =0.0155 x 1/3= 5.167 x10^-3 moles



concentration of AlCl3 is therefore= 5.167 x10^-3/ 0.15 =0.0344 M

6 0
3 years ago
Why is a Container important to the sustainability of your hydroponic system?
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What gas is produced by the re
baherus [9]

Answer:

D. Carbon dioxide

Explanation:

7 0
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Give the empirical formula for C↓8H↓8
mr_godi [17]

Answer:

Empirical formula of  C₈H₈ =  CH

Explanation:

Data Given:

Molecular Formula = C₈H₈

Empirical Formula = ?

Solution

Empirical Formula:

Empirical formula is the simplest ration of atoms in the molecule but not all numbers of atoms in a compound.

So,

tha ration of the molecular formula should be divided by whole number to get the simplest ratio of molecule

        C₈H₈ Consist of  Carbon (C), and Hydrogen (H)

Now

Look at the ratio of these two atoms in the compound

                         C : H

                         8 : 8

Divide the ratio by two to get simplest ratio

                          C : H

                       8/8 : 8/8

                         1   :  1

So for the empirical formula is the simplest ratio of carbon to hydrogen 1 : 1

So the empirical formula will be

                     Empirical formula of  C₈H₈ =  CH

4 0
3 years ago
A car accelerates from rest to a speed of 24 m/s in 8 seconds. What is the car's average acceleration
densk [106]

Answer:

3 m/s

Explanation:

24 m/s over 8 seconds would be 24/8 making it be 3 m/s avg

4 0
3 years ago
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