Which of the following elements is most likely to form an ion that will then form an ionic bond with an ion of a Group 1A element?

A) Pt

B) I

C) Fr

D) Be

Steps on how to obtain a pure sample of sulphur and iodine from its mixture

C8H10N4O2 is the chemical formula for caffeine, there are 8 carbons. List the 3 remaining elements in caffeine and how many atoms of that element are present in a molecule of caffeine. (.5pt/element,.5pt/number of atoms)

Which of the following is not a potential sign of chemical change? a. release of gas c. change of color b. evaporation of water d. production of gas

4Fe+3O2-->2Fe2O3. How many moles of fe2o3 are produced from 0.5 moles of o2? A. 0.33 mol B. 0.75 mol C. 0.38 mol D. 0.67 mol

Separating fluids, such as blood, is best accomplished using: evaporation crystallization centrifugation adsorption

At what temperature in Kelvin will 0.0965 moles of chlorine exert a pressure of 2.02 atm at a volume of 0.652 L?

How can a mixture of nails and sawdust be most efficiently separated into its component parts? A:By cooling it B:By filtering it C: By using a magnet D:By using a catalyst

A 10.0 L balloon contains helium gas at a pressure of 655 mmHg. What is the new pressure, in mm Hg, of the helium gas if the volume is 20.0 L and if there is no change in temperature or quantity? 6550 mmHg 1000 mm Hg 1310 mmHg 300 mm Hg

Restate Newtons first law in terms of acceleration

Electrolysis of 10.0 g of a binary metal chloride deposits 6.207 g of the pure metal. what is the metal?