What is the name of this molecule?

H3C - C ≡ C - CH3

1,2,3, or 4-butyne?

If 3.00 g of titanium metal is reacted with 6.00 g of chlorine gas, cl2, to form 7.7 g of titanium (iv) chloride in a combination reaction, what is the percent yield of the product?

What is the percentage of hydrogen in nitrogen trihydride

In the experiment you asked to react hydrochloric acid and with sodium hydroxide. when measuring the volume of the reactants, which instrument would give the greatest precision.