What element has 2 protons?

A way of classifying organisms that uses all the evidence known about organisms is called a?

Name the element that corresponds to the following electron configuration 1s2, 2s2, 2p1

Jane is sliding down a slide. What kind of motion is she demonstrating?

How does a chemist give us the required medicines quickly?

Draw all the plausible resonance structures of thiophene,

Identify whether each reaction represents a chemical reaction or a nuclear reaction by filling in the blank with the word 'chemical' or 'nuclear'. CIP + H → 2HCI This represents a reaction H + H He + n This represents a reaction

The Spirit of America Goodyear blimp has a volume of 2.027*105 ft3. When the blimp is in operation, it is filled with helium gas. If the density of helium at room temperature is 0.179 g/L, calculate the mass of helium in the blimp.

When a solid melts, thermal energy is removed from the solid is that true or false?

Ow was bohr's atomic model similar to rutherford's model? a. it assigned energy levels to electrons. b. it described electron position in terms of the electron cloud model. c. it described how electrons gain or lose energy. d.

Calculate the decrease in temperature (in Celsius) when 2.00L at 21.0*C is compressed to 1.00.