Q2

What is the molarity of a solution that contains

0.500 mole of KNO, dissolved in 0.500-liter of

solution?

(1) 1.00 M

(3) 0.500 M

(2) 2.00 M

(4) 4.00 M

An ion of the same element is formed by changing the number of

How many moles of Ca are in 425 g of Ca

Identify each definition that applies to the compound in red. Check all that apply. HCI + NaOH → H2O + NaCl

Which of the following Is true about semi-conductors -neither free eletrons nor hoes are considered charge carriers in a semi-conductor -exposing a crysal of a semiconductor to heat or light starts displacing valence electrons which then move

Write equations for the ionization of hno3 in water and the reaction of co32 - with water. for each equation, identify the hydrogen-ion donor and hydrogen-ion acceptor. then label the conjugate acid-base pairs in each equation.

What is the primary cause of global wind patterns on earth?

What is the central argument about global warming

How many mL of a 4.50M NaBr solution are needed to make 250 mL of a 0.75M solution of NaBr?

Calculate the density of propanol c3h8o if you know that there are 1.069*1025 molecules of propanol in 1.35 l.

Why electrons are transferred during the course of the reaction between magnesium and oxygen?