Which of the following can be used to measure the rate of a reaction?Quantity of reactant used – Quantity of product formed Quantity of reactant usedQuantity of reactant used/timeQuantity of product formed2What units are used for measuring change in mass/time?Micrograms per second Grams per minute Grams per secondMicrograms per minute3One way of measuring the rate of reaction is to draw a graph of the progress as it happens. What units are always plotted on the x axis?Volume of gas (cm3)Time (s) Mass of reactant (g)Mass of product (g)4To measure the volume of a gas formed in a reaction, when might you choose to use a gas syringe rather than a measuring cylinder?To measure an insoluble gasTo measure a toxic gasTo measure a coloured gasTo measure a soluble gas5A student investigated the rate of a reaction by measuring the mass lost. The reactant weighed 6 g at the start of the reaction and 4.8 g at the end, and the reaction took 2 minutes 30 seconds to complete. What was the rate of the reaction? 0.032 g/s0.48 g/s0.04 g/s0.008 g/s

The rate of a reaction can be measured using the following methods: Quantity of reactant used, Quantity of product formed, Quantity of reactant used/time, and Quantity of product formed.

The units used for measuring change in mass/time can be Micrograms per second, Grams per minute, Grams per second, and Micrograms per minute.

When measuring the rate of reaction by drawing a graph of the progress as it happens, Time (s) is always plotted on the x-axis.

A gas syringe might be chosen over a measuring cylinder to measure the volume of a gas formed in a reaction when you need to measure an insoluble gas, a toxic gas, a coloured gas, or a soluble gas.

To calculate the rate of the reaction in the given scenario, first, we need to find the total mass lost during the reaction. The reactant weighed 6 g at the start and 4.8 g at the end, so the mass lost is 6 g - 4.8 g = 1.2 g. The reaction took 2 minutes 30 seconds to complete, which is 150 seconds in total. Therefore, the rate of the reaction is the mass lost divided by the time taken, which is 1.2 g / 150 s = 0.008 g/s. So, the rate of the reaction is 0.008 g/s.