How many valence electrons does arsenic have?

What element is found in group 5 period 3?

How many atoms are there in 1.00 mole of KNO3? a. 1 atom b. 3.01 x 10^24 atoms c. 6.022 x 10^23 atoms d. 5 atoms

How many grams of H2O can be made from the combustion of 3.75 liters of C7H14 and an excess of O2 at STP?

Liquid diphenhydramine comes in a concentration of 12.5 mg per 5 ml . Using the dosage calculated, how many milliliters of diphenhydramine should be administered to the child?

5. An element whose highest occupied s sublevel and a nearby d sublevel contain electrons

Calculate the formula mass for each compound. a. NO2 b. C4H10 c. C6H12O6 60. Calculate the formula mass for each compound. a. MgBr2 b. HNO2 c. CBr4 d. Cr (NO3) 3

How many electrons will calcium gain or lose when it forms an ion?

Which statement describes thermal energy? the energy that is associated with electric fields the energy that is stored in chemical bonds the energy that is associated with the pull of gravity the energy that is associated with temperature

Give the formula %error = theoretical value - experimental value / theoretical value * 100 calculate the percent error for the experiment.

A baker touches a pie right after taking it out that of me which statement best explains why the pie feels hot