On a Periodic Table, an element classified as a semimetal (metalloid) can be found in ...

A. Period 6, Group 15

B. Period 2, Group 14

C. Period 3, Group 16

D. Period 4, Group 15

In the reaction: C6H6 + O2 = CO2 + H2O If 26.2 grams of C6H6 is reacted in a 0.250-liter container and this reaction is carried out at 395 K, what is the pressure inside the container?

List the number of each type of atom on the right side of the equation Pb (NO3) 2 (aq) + 2NaCl (aq) →PbCl2 (s) + 2NaNO3 (aq) Enter your answers separated by commas (the order of the numbers is the same as the order of the elements on the left side

Barium nitrate has the formula Ba (NO3) 2. Which statement is true about barium nitrate? Each molecule contains four different elements. Each molecule contains three atoms. Each molecule contains seven different bonds.

Which formula below is the correct combination when nitrogen and hydrogen bond covalently? A. N3H B. NH3 C. NH2 D. NH

An ion of zinc, Zn, has 28 electrons, 30 protons and 33 neutrons. What is its mass number

The flame from my candle gives off black smoke heat and light what type of changes do these indicate

Which one of the following processes results in a decrease in the number of neutrons? corrosion electron capture gamma emission positron emission alpha emission

Calculate the root mean square velocity of F2, Cl2, and Br2 at 304 K.

The total pressure inside a 1.62 cylinder kept at 35°C is 1.15 atm. If the volume of the cylinder drops to 0.74 L and the temperature remains the same, what is the new pressure inside the cylinder?

What is difference between tempering and aging?