A student measured the pressure of the gas contained in a tank at 646 mmHg. What is this pressure in atmospheres? a. 0.85 atm c. 1.2 atm
b. 1 atm d. 646 atm

What neutral atom is isoelectronic to mn+4

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3 -> a2cr(no3)3 + a3ag2so4

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