 # Question: How Do U Calculate Rate?

## What is an average rate?

Average Rate — a single rate applying to property at more than one location that is a weighted average of the individual rates applicable to each location..

## Is percent a rate?

A rate can only be expressed as a percentage if the rate is measured as a ratio, since a percentage is a ratio in the form x:100. Look it in another way. The rate is the thing you measure.

## What are 3 examples of rates?

Some examples of unit rates are: miles per hour, blinks per second, calories per serving, steps per day and heart beats per minute.

## How do you graph a first order reaction?

Other graphs are curved for a zero order reaction. For a first order reaction, as shown in the following figure, the plot of the logrithm of [A] versus time is a straight line with k = – slope of the line. Other graphs are curved for a first order reaction.

## What is the formula of rate in simple interest?

Use this simple interest calculator to find A, the Final Investment Value, using the simple interest formula: A = P(1 + rt) where P is the Principal amount of money to be invested at an Interest Rate R% per period for t Number of Time Periods. Where r is in decimal form; r=R/100; r and t are in the same units of time.

## What is 1st order reaction?

: a chemical reaction in which the rate of reaction is directly proportional to the concentration of the reacting substance — compare order of a reaction.

## What are the 5 factors that affect the rate of reaction?

We can identify five factors that affect the rates of chemical reactions: the chemical nature of the reacting substances, the state of subdivision (one large lump versus many small particles) of the reactants, the temperature of the reactants, the concentration of the reactants, and the presence of a catalyst.

## What is percentage formula?

To determine the percentage, we have to divide the value by the total value and then multiply the resultant to 100. Percentage formula = (Value/Total value)×100. Example: 2/5 × 100 = 0.4 × 100 = 40 per cent.

## What are the examples of first order reaction?

First-order reactions are very common. We have already encountered two examples of first-order reactions: the hydrolysis of aspirin and the reaction of t-butyl bromide with water to give t-butanol. Another reaction that exhibits apparent first-order kinetics is the hydrolysis of the anticancer drug cisplatin.

## What is the formula for first order reaction?

A first-order reaction depends on the concentration of one reactant, and the rate law is: r=−dAdt=k[A] r = − dA dt = k [ A ] .

## What is 2nd order reaction?

: a chemical reaction in which the rate of reaction is proportional to the concentration of each of two reacting molecules — compare order of a reaction.

## What 4 factors affect the rate of a reaction?

Reactant concentration, the physical state of the reactants, and surface area, temperature, and the presence of a catalyst are the four main factors that affect reaction rate.

## What is average rate of reaction?

The average rate of reaction is defined as the ratio of the change in the concentration of the reactants or the products of a chemical reaction to the time interval.

## What is the formula of amount?

Use this simple interest calculator to find A, the Final Investment Value, using the simple interest formula: A = P(1 + rt) where P is the Principal amount of money to be invested at an Interest Rate R% per period for t Number of Time Periods. Where r is in decimal form; r=R/100; r and t are in the same units of time.

## What is the formula of time?

The formula can be rearranged in three ways: speed = distance ÷ time. distance = speed × time. time = distance ÷ speed.

## How do you calculate rate of reaction from a graph?

If you plot a graph of [A] vs. t and draw a line tangent to the graph, then rate = ½ × |slope| of the line (rate is always a positive number). To find the instantaneous rate of reaction at a given time: Plot a graph of concentration of reactant against time of reaction.

## What is the rate of reaction formula?

Since the stoichiometric coefficient for oxygen is 1, the rate of reaction = (change in O2 concentration/change in time) x (1/stoichiometric coefficient for O2 in balanced reaction). Since the stoichiometric coefficient is 1, the rate just looks like rate = change in O2 concentration/change in time.

## What does 1 t represent?

Scientists work with the standard units, therefore 1/t is 1 divide by 1 second. … It means the reciprocal of time, like “per second”. In rate of reaction you would be comparing the change in concentration of reactants to the change in concentration of products over time.

## What is a rate in math?

A rate is a special ratio in which the two terms are in different units. For example, if a 12-ounce can of corn costs 69¢, the rate is 69¢ for 12 ounces. This is not a ratio of two like units, such as shirts. This is a ratio of two unlike units: cents and ounces.

## What does a first order graph look like?

For a first-order reaction, a plot of the natural logarithm of the concentration of a reactant versus time is a straight line with a slope of −k. For a second-order reaction, a plot of the inverse of the concentration of a reactant versus time is a straight line with a slope of k.

## How can you tell if a graph is a first order reaction?

First order, would be natural log of concentration A versus time. If you get a straight line with a negative slope, then that would be first order. For second order, if you graph the inverse of the concentration A versus time, you get a positive straight line with a positive slope, then you know it’s second order.