You have 80 g of a radioisotope. If the half-life of this radioisotope is 4 days, how many grams will remain after 16 days? Must show work or reasoning for full credit

Calculate the work for each of the following processes beginning with a gas sample in a piston assembly with T 5 305 K, P 5 1.79 atm, and V 5 4.29 L: (a) irreversible expansion against a constant external pressure of 1.00 atm to a final volume of 6.

What is matellic bonding

10. If 200. L of ammonia (NH3) are produced in the reaction between nitrogen and hydrogen at STP, how many liters of nitrogen gas is used up in this reaction?

The bonding of two atoms will most likely occur if: a more stable state can result from the union the outer shell can be completely filled all the balance electrons are removed the electronegativities of both atoms are similar

What is the molar mass of CaSO4?

The wavelength of some violet light is 420.0 nm. What is the frequency of this violet light?

What is the molarity of 3.0 L of solution containing 4.0 moles MgO

I need to have a sentence with the word neap tide in it.

15 g of gold and 25 g of silver are mixed to form a single-phase ideal solid solution. How many moles of solution are there? What are the mole fractions of gold and silver? What is the molar entropy of mixing? What is the total entropy of mixing?

What mass of barium nitrate is dissolved in 21.29 mL of a 3.38 M solution?