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BaLLatris [955]
3 years ago
11

Name a method that could be used to separate magnesium hydroxide from sea water

Chemistry
1 answer:
umka2103 [35]3 years ago
6 0

Answer:

Add  limewater  

Explanation:

Ca(OH)₂ is about 1000 times more soluble than Mg(OH)₂

If you add limewater to the seawater, the magnesium ions will precipitate out as magnesium hydroxide.

Mg²⁺(aq) + 2OH⁻(aq) ⟶ Mg(OH)₂(s)

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How a cation is formed by an atom?​
fenix001 [56]

Answer:

Cations are positively charged atoms and hence we need to make the atom positively charged in order to get a cation

We know that an atom is neutral as a whole, so we have equal number of electrons and protons

since we cannot mess with the number of protons in an atom, we have to do it by altering the number of electrons

If we reduce the amount of electrons in an atom, the net charge will be positive and hence a cation will be formed

4 0
3 years ago
Assuming equal concentrations and complete dissociation, rank these aqueous solutions by their freezing points from highest to l
muminat

Answer:

NH4Cl > Li2SO4 > CoCl3

Explanation:

Let us recall that the freezing point depression depends on the molality of the solution and the number of particles present.

Let us also recall that freezing point depression is a colligative property. It depends on the number of particles present in solution.

Usually, the more the number of particles present, the lower the freezing point. Hence, NH4Cl which has only two particles will have the highest freezing point while CoCl3 which has four particles will have the lowest freezing point.

4 0
3 years ago
The mass of an object is
Zielflug [23.3K]

Answer: The mass of an object is a measure of the object's inertial property, or the amount of matter it contains. Hope this is what your looking for.

Explanation:

6 0
3 years ago
What do you think could happen with methane gas and CO 2
Molodets [167]

Answer:

these gases accumulate in the atmosphere and create the heat-reflective layer that keeps the Earth at a livable temperature. These gases form the insulation that keeps the planet warm enough to support life

5 0
3 years ago
How many moles of KOH are in 130.0 mL of a 0.85 M solution of KOH? <br> Please help ASAP!!! :(
lana [24]

Answer:

0.1105 moles per 130 ml

Explanation:

For  1 L (1000) of solution, no of moles are =  0.85

For 1 ml of solution, no of moles are = 0.85/1000 moles

For 130 ml of solution, no of moles are=  0.85/1000 x 130

                                                                = 0.1105 moles per 130 ml

7 0
4 years ago
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