gavin379
gavin379
04-01-2021
Mathematics
contestada
Just need help with these 2 questions
Respuesta :
Tasyana
Tasyana
04-01-2021
Answer:
I wanna help but I can't see it properly
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The elements of the Periodic Table are arranged on order of increasing(1) atomic number (2) mass number (3) number of isotopes (4) number of moles
Given the balanced equation representing a reaction: 4Al(s) + 3O2(g)-->2Al2O3(s) Which type of chemical reaction is represented by this equation? (1) double
which statement best describes Aztec civilization at the time of the encounter
Which element has chemical properties that are most similar to those of calcium? (1) Co (3) N (2) K (4) Sr
is 25 yards less than 75 ft
Which physical changes are endothermic? (1) melting and freezing (2) melting and evaporating (3) condensation and sublimation (4) condensation and deposition
If x is an integer in the first quadrant and sinx=2/5 find each value Cos2x Sinx/2 Tan x/2
Which statement explains why sulfur is classified as a Group 16 element? (1) A sulfur atom has 6 valence electrons. (2) A sulfur atom has 16 neutrons. (3) Sulfu
Which chemical equation is correctly balanced? (1) H2(g) + O2(g)=> H2O(g) (2) N2(g) + H2(g) =>NH3(g) (3) 2NaCl(s)=>Na(s) + Cl2(g) (4) 2KCl(s) => 2K(
How do you solve x-y=1 ; x+y=3. Please Explain
