Hich element is likely to be the most brittle?

a. selenium

b. cobalt

c. platinum

d. zinc

Mary walked north her home to sheila home is 4.0 away then turned right and walked another 3.0 kilometers to the supermarket which is 5.

A student places a strip of litmus paper into a solution he has been told is strongly basic. Which should he observe when he removes the strip from the solution

How many moles of CO2 are formed from one mole of CO?

How do simple machines make work easier? They increase the distance of applied forces. They change the strangth or direction of a force. o They add energy to the work. O They reduce the speed of work.

Difference between: orbit in Bohr model, and, orbital in Quantum model

Express your answer using two significant figures. 2.7 cm3 = m3 2.0 mm3 = m3

Liquid petrol does not ignite spontaneously in air

What conditions are important in determining if it will rain or snow?

What is the gram formula mass of Na2CO3 multiplied by 10H2O

Why are elements organized in the same group or families