Then submerge the conductivity probe into the standard solution and type in the known value of the solution; 1000 in this case. Then, wait for the voltage to stabilize and press “Keep”. Exit by pressing “OK” when this process is done. Set the data collection method on the LabQuest to “events with entry”. In order to titrate the phosphoric acid, the following method was used.
We can now rearrange the equation in order to make it easier to calculate only n. 3. After rearrangement the formula should look like this: n(SO2) = pV/RT 4. Now we just put in all of the known values for pressure, temperature, volume, and the gas constant and calculate the molar mass of SO2. Picture 1: Diagram of
When the dry pressure is determined, the volume of the gas at STP can then be determined and what the experimental volume of one mole of the gas would be at STP. 1. Put on the necessary safety gear, including safety goggles and a lab coat/apron. 2. Cut a piece of magnesium
k called the “spring constant” is the variable we are trying to find as well is the total of the stress made on the object. Stress is the force on unit areas in a material that develops a result in externally applied force. The reason why k must be multiplied by two is because modern versions of the slingshot are designed to have a Y-shaped handle with two rubber straps and a pouch attached to the points. Since I pull the rubber band back to increase its displacement both individual strand is parallel producing the same spring constant. F would be measured the same since it would be calculated from both spring constants.
Results and Discussion The effects of ultrasound, electric field strength, the time of applying the field and sonication time on a number of E. coli, and energy consumption of the process in mint distillate were investigated. As shown in Table (), the full quadratic model for the data had a significant effect on the reduction of E. coli in the samples of mint distillate. The adjusted determination coefficient, standard error and coefficient of variation (C.V) of the model were equal to 0.9984, 0.049 and 2.39, respectively. According to ANOVA (Table 1-4), with the exception of the electric field strength coefficient* sonication time and the time of applying the electric field * sonication time, other coefficients of the variables in the model
The experimental value yielded a result of y = -100x + 10 and the theoretical yielded a -100 V/m. The percent error between the two values was 0.00%. The experiment showed that the theory of the relationship between equipotential lines and electric field lines hold true. Introduction: The objective of this lab was to analyze the nature of electric fields formed by two dipoles and two parallel line conductors using a digital voltmeter. The purpose is to test the theory that states equipotential lines always run perpendicular to electric field lines.
Research Question: Does the speed or velocity of the car change due to the magnetic field present? Background information: We know that s=1/2(u+v)t where, v= velocity/speed (m/s), d= displacement (m), t= time (s). u=initial velocity (m/s) When an object moves, it often undergoes changes in speed and motion. The equation used above is an equation of motion, In that specific equation, acceleration is constant acceleration due to gravity. The area of the graph on this equation shows us the rate of change of displacement.
Explain how the molarity of the standard solution (the alkali) was calculated in the experiment (equation explained)- 0.1M of NaOH is required, this equation will be used: Concentration = moles volume This will be rearranged to find the moles needed to carry out the experiment. The concentration of the experiment using NaOH is 0.1M so we just need to rearrange the equation to find the molarity. 0.1 x 0.250 = 0.0250 moles Number of moles = mass RFM 0.0250 = mass 40 0.0250 x 40 + 1g (mass) Explain how this enabled you to accurately calculate the molarity of each acid used in the titrations (equations explained)- Molarity of the acid = molarity of the alkali x volume of the alkali volume of acid Firstly we will need to add up all of the volumes found within the titration to find an average: 13.10+13.20+13.10= 13.13 Molarity of Ethanoic acid = 0.1 x 25.00 = 0.190 mol dm-3 13.13 Molarity of Hydrochloric acid = 1.0 x 25.00 = 0.077 mol dm-3 32.53
Theory The equation that was used in this experiment is % recovered = 100% X m/m0. M = mass of copper recovered and m0 = mass of original copper sample. In order to get the percent recovered, the mass must be determined. After determining the mass, you have to multiply 100% by the mass of the copper recovered divided by the mass of the original copper sample. Experiment 1.
Does the type of battery used to create a motor affect the time the motor spins? If the type of battery affects the amount of time the coil spins then the D-battery powered electric motor will spin for the longest period of time. The procedures were to create the motor and find a spot for the motor to spin. You also needed to keep track of the time the motor spinned. When the motor stops spinning record the time on a data table.