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Mrrafil [7]
3 years ago
8

describe a way that people might be able to solve each envioronmental problem listed below. coal mining can harm habitats and ca

use pollution.
Chemistry
1 answer:
Lera25 [3.4K]3 years ago
5 0
Use Solar panels
Wind turbines 
Hydroelectrically means of sourses
Bio fuels
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Aqueous solutions of hydrochloric acid and barium hydroxide can neutralize each other to produce a compound that is soluble in w
SpyIntel [72]

Answer:

Ba^2+ = Barium ion [Cation]

Cl-= Chloride ion  [Anion]

Explanation:

Ba(OH)2 + HCl = BaCl2 + H2O is the reaction that happens.

You make an ionic compound which is soiuble in water Barium Chloride. The cation is Ba^2+ = Barium ion, Cl^ - = Chloride ion

Postive ions are cations and negative ions are anions thus

Ba^2+ = Barium ion [Cation]

Cl-= Chloride ion  [Anion]

5 0
3 years ago
If all the water in 430.0 mL of a 0.45 M NaCI solution evaporates what is the mass of NaCI will remain
skad [1K]

Answer:

11.31 g.

Explanation:

Molarity is defined as the no. of moles of a solute per 1.0 L of the solution.

M = (no. of moles of solute)/(V of the solution (L)).

<em>∴ M = (mass/molar mass)of NaCl/(V of the solution (L)).</em>

<em></em>

<em>∴ mass of NaCl remained after evaporation of water = (M)(V of the solution (L))(molar mass)</em> = (0.45 M)(0.43 L)(58.44 g/mol) = <em>11.31 g.</em>

6 0
3 years ago
Read 2 more answers
Which object will have the most kinetic energy?
professor190 [17]

Answer:

Semi-track

Explanation:

It has more mass so,more KE.

4 0
3 years ago
What is a compound in chemistry
nignag [31]
A compound is a substance formed when two or more chemical elements are chemically bonded together. In mixtures, the substances present are not chemically bonded together.
7 0
3 years ago
Why does food have potential energy?
Savatey [412]

Answer:

So that if we feel weak, energy is released through it so we can do work and do stuff like walk or think. It's like stored energy that can do things for the future.

Please give brainliest if it helped.

3 0
3 years ago
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