Multiple choice identify the letter of the choice that best completes the statement or answers the question. three different people weigh a standard mass of 2.00 g on the same balance. each person obtains a reading of 7.32 g for the mass of the standard. these results imply that the balance that was used is a. accurate b. precise c. accurate and precise d. neither accurate nor precise

Three different people weigh a standard mass of 2.00 g on the same balance. Each person obtains a reading of 7.32 g for the mass of the standard. These results imply that the balance that was used is b. precise.

Three different people weigh a standard mass of 2.00 g on the same balance. Since it is a standard mass, this is considered to be the true value of the mass. However, upon weighing, each person obtains a reading of 7.32 g.

Taking into account that, in a set of measurements, accuracy is the closeness of the measurements to a specific value, while precision is the closeness of the measurements to each other, we can say the balance is not accurate (the measured value is far from the true value) but it is precise (measured values are close one to another).

Three different people weigh a standard mass of 2.00 g on the same balance. Each person obtains a reading of 7.32 g for the mass of the standard. These results imply that the balance that was used is b. precise.

You can learn more about accuracy and precision here:

indicate valleys, hills, steepness and gentleness of slopes.

explanation:

contour lines on a map indicate elevation, or depth. numeric notations on contour lines refer to the level of elevation, or height about sea level.

"you start with 15.67 g mgco3-xh2o, when heated and all the water is removed, you are left with 7.58 g mgco3 only.

therefore, you had 15.67 - 7.58 = 8.09g h2o  

moles of each :

7.58g mgco3 = ? moles = 7.58g / 83.4g/mole = 0.09moles  

8 09g h2o = ? moles = 8.09g / 18g/mole = 0.44moles  

molar ratio between the two by dividing both numbers by the smallest number :

0.09 / 0.09 = 1  

0.44 / 0.09 = 4.8  

mgco3-5h2o"