Maria examines a mixture that appears to be the same throughout. However, when she magnifying lens, she can see small droplets of liquid surrounded by another liquid.
Which conclusion best fits her observations?
O The mixture's a solution because it has the same appearance throughout the samp
The mixture is a suspension because it is composed of two different-appearing sub-
The mixture is a heterogeneous mixture because one liquid is dissolved in the other
O The mixture is a colloid because two different substances can be seen in a small sa

Lacie kicks a football from ground level at a velocity of 13.9 m/s and at an angle of 25.0° to the ground. how long will the ball be in the air before it lands? how far will the football travel before it lands?

Uranium has two naturally occurring isotopes. 238u has a natural abundance of 99.3% and 235u has an abundance of 0.7%. it is the rarer 235u that is needed for nuclear reactors. the isotopes are separated by forming uranium hexafluoride uf6, which is a gas, then allowing it to diffuse through a series of porous membranes. 235uf6 has a slightly larger rms speed than 238uf6 and diffuses slightly faster. many repetitions of this procedure gradually separate the two isotopes. what is the ratio of the rms speed of 235uf6 to that of 238uf6? express your answer to five significant figures.

Which best term to describe a chemical reaction that absorbs energy from its surroundings? a.thermal conductor b.thermal insulator c.endothermic d.exothermic