What is the element with the lowest electronegativity value? A. Cesium B. Helium C. Calcium D. Fluorine

Lithium carbonate, li2co3, contains 18.8 % lithium and is used in the treatment of mental illnesses such as bipolar disorder. what mass of lithium is present in a 1.00-g dose of lithium carbonate?

Which elements are used for artistic objects

Cold packs are used to treat minor injuries. Some cold packs contain NH4NO3 (s) and a small packet of water at room temperature before activation. To activate this type of cold pack, the small packet must be broken to mix the water and NH4NO3 (s).

In living things what is the source of the carbon-14 that is used in radiocarbon dating

Which of the following is an element? a. carbon monoxide gas (co) b. magnesium chloride salt (mgcl) c. hydrochloric acid (hcl) d. zinc metal (zn)

As ice transforms into steam, Question options: new molecules are formed. the types of atoms are changed. energy is absorbed by the molecules. the mass of the molecules is increased.

Why do chemists consider the periodic table so useful?

Plates include large sections of Earth Oceanic or Continental

How many joules of heat are needed to raise the temperature of 1.5 g of aluminum at 45°C, if the specific heat of aluminum is 0.75 J/g°C? Group of answer choices

Which is the best predictor of the radioactive nature of an isotope? (A) the proton-to-electron ratio (B) the neutron-to-proton ratio (C) the neutron-to-electron (D) ratio the electron-to-proton ratio