Sarita measures the mass and volume of a metal cube. The average mass is 25.3 ± 0.3 g. The average volume is 6.74 ± 0.12 cm3. Which graph correctly shows Sarita's measurements with error bars?

Select the correct answer. which statement is true about a polarized object? o a. it gains electrons and becomes negatively charged. ob. it gains protons and becomes positively charged. oc. the number of positive and negative charges can be the same. od. it has to be a metal. o e. there is no change in the distribution of the charge in the object. reset next what

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false