Here’s a
the relative formula mass of a compound is the sum of the relative atomic
masses of the atoms in the numbers shown in the formula. use the a, values
given at the start of this activity to calculate the m, of the following substances:
1) н2
2) co2
3) h20
4) nh3
5) ch4
6)naoh
7)h2so4
8)na2co3
9)mg(no3)2

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true

Identify the electromagnets with poles that are reversed from the electromagnet shown above

Which statements are true concerning mineral formation? check all that apply. the slower the cooling, the larger the crystals. the faster the cooling, the smaller the crystals. crystals formed from magma are smaller than crystals formed from lava. minerals can only form in solutions when the solution is heated deep underground. when a solution cools, elements and compounds leave the solution and crystallize as minerals. minerals formed from hot water solutions can form narrow channels in the surrounding rock.