Ted used a balance scale to weigh a 2.233 g sample of copper sulfate. which of these measurements made by ted is the most accurate?

2.2 g is most accurate

Since we're round to the nearest tenth (first number to the right of the decimal point) The most accurate measurement is 2.2

Hope this helps!

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.