Một hợp chất có phân tử gồm một nguyên tử của nguyên tố x liên kết với với ba nguyên tử oxi và nặng hơn phân tử hidro 40 lần A/ tính ptk của hợp chất B/ tính NTK của x cho biết tên và khhh của nguyên tố X

2 câu trả lời

Đáp án: ptk=40*2=80

x=80-(16*3)=32 => x= s

tên lưu huỳnh

Giải thích các bước giải:

Đáp án: A)XO3=2Hx40=2x1x40=80đvC

X=80-16x3

X=32đvC

X là lưu huỳnh

kí hiệu S

CTHH:SO4

Giải thích các bước giải:

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