Element-106 has a half life of 0.90 seconds. If one million atoms of it were prepared, how many atoms would remain after 4.5 seconds?

Hydrogen cyanide (HCN) is an important industrial chemical. It is produced from methane (CH4), ammonia, and molecular oxygen. The reaction also produces water. Balance the equation for this reaction.

If 651 grams of ethylene glycol, HOCH2CH2OH, is dissolved in 1.50 kg of water at 90.°C, what is the vapor pressure of the water in the solution?

Tow formulas for compounds containing hydrogen and oxygen are H2O and H2O2. Do these formulas represent the same compounds? Explain

The standard heat of formation of a branched alkane is - 35 kcal/mol; the standard heat of formation of the unbranched version of alkane (same molecular formula) is - 28 kcal/mol.

Which step of the scientific method involves identifying variables? a. analyzing data b. testing a hypothesiss c. asking a question d. developing a theory

Which does not add to the reliability of a scientific source of information? displaying data in a colored chart clearly identifying the sources of the data explaining how the data was collected showing that many scientists had reviewed the

Given that pH + pOH = 14, what is the pH of a solution if its pOH is 12.4?

How long does it take to anser this quesiton fist one gets brialyest

Which of the following quantities is conserved in a chemical reaction

Describe soda on the effect of baking stomach contents with ph4