Cho 40.4 gam hỗn hợp 3 kim loại Fe, Cu, Al vào dung dịch H2SO4 10% người ta thu được 1,8 gam H2 và 12,8gam một chất rắn không tan . Tính% khối lượng mỗi chất rắn hỗn hợp đầu

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !

The ozone molecule o3 has a permanent dipole moment of 1.8×10−30 cm. although the molecule is very slightly bent-which is why it has a dipole moment-it can be modeled as a uniform rod of length 2.5×10−10 m with the dipole moment perpendicular to the axis of the rod. suppose an ozone molecule is in a 8000 n/c uniform electric field. in equilibrium, the dipole moment is aligned with the electric field. but if the molecule is rotated by a small angle and released, it will oscillate back and forth in simple harmonic motion. what is the frequency f of oscillation?

Which three statements represent the benefits of performing experiments using computer simulations?