Mass, air has that. Since what fills up a balloon? A gas
Shape, it has no definite shape. This one is accurate, it has no definite shape, it takes the shape of the object it's in.
Volume, does air take up space? If it does then yep. Balloon example/
Density, yes it does, because it's tightly wounded up.
D
Answer:
where the main questions of these assmesnt
Explanation:
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.
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The ch4 molecule exhibits hydrogen bonding.
This statement is false. A CH4 molecule do not have a hydrogen bonding instead it has dipole dipole attraction.
Hydrogen bonding occurs when a hydrogen atom is covalently bonded to an N, O, or F atom.
This would be a true statement. A hydrogen bond is present when an atom of hydrogen shares electrons with O, N or F atom.
A hydrogen bond is equivalent to a covalent bond.
This is a false statement. A hydrogen bond is an intermolecular force of attraction while covalent bond is a intramolecular force. So, they would mean different things.
a hydrogen bond is possible with only certain hydrogen-containing compounds.
This would be true. Without the presence of an hydrogen atom definitely there would be no hydrogen bond.
a hydrogen atom acquires a partial positive charge when it is covalently bonded to an f atom.
This would be true since a HF is a polar molecule.
Using accurate measurements, using pure chemicals and performing the reaction under the most ideal conditions is important to get a valuable percent yield.
<h3>How we calculate the percent yield?</h3>
Percent yield of any chemical reaction is define as the ratios of the actual yield to the theoretical yield of the product and multiply by the 100.
To get the high percent yield or actual yield of any reaction, we have to perform the reaction under ideal condition because if we not use the standard condition then we get the low rate of reaction. Reactants should be present in the pure form as impurity make unwanted products and reduce the productivity of main product and accurate amount of reactants also important for the spontaneous reaction.
Hence, options (a), (b) & (c) are correct.
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