Which of these is a covalent compound?

A. NO2

B. LiCl

C. AlCl3

D. Na2S

What is the partial pressure of the third gas, helium?

How many moles is 1.50x10^23 molecules NH3

A substance is a liquid at room temperature and dissolves well in water. It also conducts electricity. What type of bonds does it have?

A partir de la desintegración del Virreinato del Río de la Plata y durante todo el siglo XXI, los nuevos Estados nacionales que iban surgiendo, intentaron fijar sus fronteras verdadero o falso?

The person using the track with the rollers uses less energy to load the box because the rollers reduce the

If a scientist creates a new rock-like substance in a laboratory, why wouldn't this type of material be classified as a true mineral?

Select the correct responses to the questions from the drop-down menus. Which wind blows cool air inland during the day? Which wind blows cool air toward the sea at night? Which winds blow steadily from specific directions and over long distances?

Consider the balanced equation for the following reaction: 3Ca (ClO3) 2 (aq) + 2Li3PO4 (aq) → Ca3 (PO4) 2 (s) + 6LiClO3 (aq) Determine the theoretical yield of LiClO3 (aq) in grams if the percent yield of LiClO3 (aq) is 81.0% and 9.

What is the total number of valence electrons in a sulfide ion in the ground state? (1) 8 (3) 16 (2) 2 (4) 18

Write the name and formula of the compound made of magnesium and fluorine