Smooth, rough, hard or soft are common descriptions
Answer:
Across
2. Conduction.
3. Plates
4. Convection
5. Subduction
7. Earthquake
Down
1. Radioactive
6. Radiation
8. Sink
9. Slabpull
The clues are;
Across:
2. air molecules come in contact with warmer molecules
3. crust are made up of puzzle - like landmass called_____
4. rising and falling movement of material in the mantle
5. when tectonic plates push with each other
7. it is the result of movement of earth's plate
Down:
1. elements that play a vital role in Earth's internal heat
6. least important mode of heat transport
8. warm material rise; cool material______
9. heats build up underneath the crust
Answer:
1. They are found in nearly limitless supply.
Renewable resources are those which are abundantly present in nature and can be replenished again after single use. For example water, air and sunlight.
2. increased
Over the past 100 years, the amount of fossil fuel consumption has increased because with the increase in the population cover all over the world, the requirement of fossil fuels is also increasing. Fossil fuels are required for the generation of thermal and electrical energy.
3. United States
The United States is the reservoir of coal. It is a chief exporter of the coal to India, Netherlands , Japan, South Korea and Brazil.
Answer:
Explanation:
HF ,Hydrofluoric acid happens to be a weak acid and as we know that a weak acid is partially dissociated in water.
So when we dissolve HF in water it would subsequently dissociate into H⁺ and F⁻ions . The solution now would contain hydronium ion that is H+ ion.
The solution would also contain dissociated F⁻ ion and solvent H20 molecules.
The following reaction would take place:
HF+H₂O⇆H₃O⁺+F⁻
so the reaction in forward direction is the dissociation of HF into H₃O⁺(that is H⁺) and F⁻ion.
The backward reaction would be the recombination of H₃O⁺(that is H⁺) and F⁻ion to give back HF and H₂O
Answer:
The answer to your question is 2.1
Explanation:
Data
Molarity = 1 l
mass = 120 g of NaCl
moles = ?
Formula
Process
1.- Calculate the number of moles of NaCl
Molecular weight NaCl = 23 + 35.5 = 58.5 g
2.- Calculate the number of moles using proportions
58.5 g of NaCl --------------- 1 mol
120.0 g of NaCl --------------- x
x = ( 120 x 1) / 58.5
x = 2.1 moles
3.- Calculate Molarity
Substitution
Simplification and result
Molarity = 2.1
