Ions are in low concentration outside a cell. They move rapidly into the cell via protein molecules. What term describes this action? Does it require energy?

In the reaction of sulfur with oxygen, which atom is reduced?

Which element is humus especially rich in? oxygen carbon nitrogen or tungsten

The electron configuration of an element is shown below. 1s22s22p63s23p6 Name the group this element belongs to in the periodic table and explain your answer. Based on the electron configuration, write one chemical property of this element.

Sand (silicon dioxide) and coke (carbon) are combined to form silicon carbide (SiC), a compound used in high-strength ceramic materials. What mass of silicon carbide will be produced from the reaction of 352 g silicon dioxide?

Atoms of two different elements must have different electrical charges. numbers of neutrons. atomic numbers. energy levels.

When you perform this reaction, what substances could remain at the end of the reaction?

How many moles of CuSO4 are used to make 250 ml of a 0.50 M CuSO4 solution?

The amount of kinetic energy and object has depends on it

Naphthalene has a relatively high vapor pressure for a solid (because of its volatility, naphthalene is the active ingredient in some brands of mothballs).

Titanium will react with magnesium oxide but sodium reacts with titanium oxide. The position of titanium will be a. above sodium b ... below magnesium but above iron c. below sodium but above magnesium d ... below silver