What is formed when oxygen and hydrogen unite chemically

a. an element

b. a mixture

c. an ion

d. a compound?

When c=o change to c-o in a molecule what happen the bond length and strength?

Which of these choices is an indirect cost of using coal? A. Cost to transport coal B. Cost of maintaining power plants C. Cost to mine coal D. Cost of pollution from burning coal

The pauli exclusion pricipal states

Question 1 Acetone (CH3) 2CO is a volatile Liquid that can be readily converted to vapour. Calculate the density of acetone vapour at 100,000 Pa and 398 K in kg/m3. Assume ideal behaviour and use R=8.314 J/mol. K. Your Answer: Answer

What specifically does STR measure? A) STR length B) the number of repeating units C) distance traveled on electrophoresis gel D) the difference between the number of repeating units between two STRs

Which is the correct formula for phosphorus pentachloride? PCl4 because a subscript of 4 indicates four Cl atoms PCl5 because a subscript of 5 indicates five Cl atoms P5Cl because a subscript of 5 indicates five P atoms P5Cl3 because a subscript of

Why are the elements in groups 3 to 12 often used to make dyes?

What is not needed for corrosion of metals? a. oxygen c. water b. ions d. sunlight

What force can move the oceans

How many moles of NO3 are there in 6.2g