What can't be changed chemically

Which of the following atoms may not expand its octet to minimize formal charge? Group of answer choices S O Se P

If troy has a 3-cm of each brass gold iron lead which cube will have the greatest mass

Draw a single lewis structure for the phosphate ion (po43-), assuming that the phosphorus atom can expand its octet such that the formal charge on each of the atoms is minimized. include all formal charges and lone-pair electrons.

What is the difference the sizes of planets and their distances from the sun

for the reaction C+2H2 = Ch4 how many molecules of hydrogen are required to produce 14 grams of methane Ch4?

How many atoms are in 151 g of calcium?

Which statements about the formation of the solar system are true and in a correct order? A. A black hole collapsed to form the sun; small planetary objects formed; small planetary objects collided with each other to form larger objects. B.

Which is an important step in the alternate method for balancing equations in redox reactions? a) indicating the types of bonds found in the molecules. b) determining the speed at which reactions take place.

How many moles of NH3 can be produced from 24.0 mol of H2 and excess N2

An ecosystem contains all the biotic and abiotic factors in an area. answers true or false