Hợp chất A tạo bởi 2 nguyên tố H và C ,biết trong A có % của H=25% và dA/O2=0,5 a)lập CTHH của A
b) Đốt cháy 11,2 lít khí A ở đktc trong 11,2 lít khí oxi ở đktc
tính khối lượng nước tạo thành

The peak wavelength for the blackbody curve of a star is in the uv range. assuming the radiation from this star can reach earth, would you be able to see it?

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line