Answer:
Explanation:
The molar mass is the mass of a given chemical element or chemical compound (g) divided by the amount of substance (mol).
The molar mass of a compound can be calculated by adding the standard atomic masses (in g/mol) of the constituent atoms. hope this helps...
There are 1000 meters in 1 Kilometer.
Hope this helps you. :)
Answer:
34.7mL
Explanation:
First we have to convert our grams of Zinc to moles of zinc so we can relate that number to our chemical equation.
So: 6.25g Zn x (1 mol / 65.39 g) = 0.0956 mol Zn
All that was done above was multiplying the grams of zinc by the reciprocal of zincs molar mass so our units would cancel and leave us with moles of zinc.
So now we need to go to HCl!
To do that we multiply by the molar coefficients in the chemical equation:
This leaves us with 2(0.0956) = 0.1912 mol HCl
Now we use the relationship M= moles / volume , to calculate our volume
Rearranging we get that V = moles / M
Now we plug in: V = 0.1912 mol HCl / 5.50 M HCl
V= 0.0347 L
To change this to milliliters we multiply by 1000 so:
34.7 mL
If you go by the decimal there should be 5 significant digits because 0 is a trailing zero and matters since it comes after a decimal. however if you do
6.3590 x 10 ^7 = 63590000 then you would only have 4 significant digits because there is no longer a decimal to make the zero after the 9, significant.
Hope this helps!
The can lead to mass wasting
Explanation:
Weathering and erosion can be a bad thing because they can lead or trigger mass wasting.
- Weathering is the physical disintegration and chemical decomposition of rocks to form sediments and soils.
- Erosion is the washing away of weathered materials.
- Mass-wasting is the movement of materials down-slope under gravity.
- Both weathering and erosion can lead to serious problems like mass-wasting because they are earth moving processes.
- Weathering can lead to the formation of sinkholes in an area where rocks are decomposed chemically.
- Erosion can wash away top fertile layer of soil and makes them bare. This can lead to drought.
- Rock fall can be initiated when rocks physically disintegrate.
- Chemical weathering can lead to rust and destruction of structures.
- Undercutting of structures by erosion can lead to the collapse of bridges.
learn more:
Erosion brainly.com/question/2473244
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