A rate compares two different units. Ex. 1 mile / 1 hour
A ratio compares two of the same units. Ex. 1 mile / 2 miles
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A proportion is an equation in which 2 fractions are set equal. A rate is the ratio of change of two things. Speed is a rate, the ratio of distance to time.
The higher the ratio, the faster the rate of diffusion
There is no difference between them they are same rate constant is another name of specific rate constant
a ratio is a fraction of two numbers a proportion is = fractions
A ratio is the comparison between two numbers with the same unit. For example 3 oranges to two oranges. On the other hand, a rate is an indication of the measurements of different units per unit. For example, the statement 3 oranges/ person shows the relationship between the measurement of oranges per person.the rate of something is the amount or speed of it, whereas the ratio is the proportion of one thing to another, like for example if there was 15 sweets in a bag; 10 red and 5 blue, so the ratio of red sweets to blue would be 2 to 1. Kthanks.