Question

and this also please ​

Answer 1

Answer:

2) symbols

Au, hg, pb, h, Fe, na, k, n2, cl2, mg, ca, ba, Al, s, c, p, he, w

3) formula

• Al2(so4)3
• Feo
• Bacl2
• K2so4
• Mg(no3)2
• Nh4cl
• Fecl3
• Caco3
• Mg(oh)2
• Nahco3

4)formula

• NaCl
• Hcl
• H2so4
• Hno3
• H20
• Nh3
• Ch4
• C6h1206

5)na + 2hcl gives nacl + h2

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