Answer:
Explanation:
The scale on a map represents the actual distance of any geographical or man made entity with respect to the map units. For example a scale of 1:10000 states that 1 unit of any mode of measurement on map is equal to 10,000 mode of measurement on ground. This mode of measurement could be cm, km , feet etc. Thus 1 cm of map may represent 1000 m, 10000 km , 200000 feet etc.
The scale is used to represent the relative distance in both horizontal and vertical directions.
The scale on a map provides a reference for understanding distances and spatial relationships of geographical features present in the map.
The scale on a map serves the purpose of representing the relationship between distances on the map and the corresponding distances in the real world.
It allows users to accurately measure distances and understand the relative sizes and proportions of features represented on the map.
The scale is typically depicted as a line or a bar, usually located in the corner of the map.
It is accompanied by numerical values indicating the units of measurement, such as kilometers, miles, or meters.
Thus, the scale on a map provides a reference for understanding distances and spatial relationships of geographical features present in the map.
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b.It is a heterogeneous catalyst, so only a small amount is needed and it is easily separated from the products.
c.It is a homogeneous catalyst, so although a large amount is needed, it is easily separated from the products.
d.It is a heterogeneous catalyst, so a large amount is needed and it exits with the products.
Answer:
B EDGE 2022
Explanation:
Answer:
Magnesium hydroxide, Mg(OH)2, is an Arrhenius base and therefore also a Brønsted-Lowry base.
However, water can also act as a base by accepting a proton from an acid to become its conjugate base, H3O+. where Al(OH)3 is acting as a Lewis Base.
Explanation:
Arrhenius acids and bases
An Arrhenius acid is any species that increases the concentration of H+start text, H, end text, start superscript, plus, end superscript in aqueous solution.
An Arrhenius base is any species that increases the concentration of OH−start text, O, H, end text, start superscript, minus, end superscript in aqueous solution.
The mass percent of a solution is calculated by dividing the mass of the solute by the total mass of the solution and multiplying by 100%. In this case, the solute is Na₂CO₃ and the solvent is H₂O. The calculation yields a mass percent of 6% for Na₂CO₃ in the solution.
To calculate the mass percent of a solution, we need the mass of the solute and the mass of the solution (which is the sum of the masses of the solute and the solvent). In your given solution, you have 15 g of Na₂CO₃ (solute) and 235 g of H₂O (solvent). Therefore, the total mass of the solution is 15 g (Na₂CO₃) + 235 g (H₂O) = 250 g.
Now, to find the mass percent of Na₂CO₃ in the solution, we use the following formula:
Mass percent = (mass of solute / total mass of solution) × 100%
Substitute the known values into the formula, we get:
Mass percent = (15 g / 250 g) × 100% = 6%
So, the mass percentage of Na₂CO₃ in the H₂O solution is 6%.
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