Is blood a pure substance

Which field of science studies the composition and structure of matter? chemistry geology physics biology

A container holds 35.8 moles of gas under 10.0 atm of pressure at 70.0 C. What is the volume of the container? 20.6 L 101 L 2080 L 10200 L

How do water go to the sky?

When two H atoms are brought together from large distances they can make H2. As the bond begins to form, the force between the atoms becomes more (attractive, repulsive) and the potential energy a) increases, b) stays the same, c) decreases

The Ph of a solution that has a hydronium ion concentration [H3O + (aq) ] of 4.3X10-5 mol/l is what? Another question is: Because tomato plants grow best in slightly acidic soil they should be grown in soil with a ph of approximately A. 1.3 B. 5.9 C.

True or false : A glacier can only form in an area where more snown falls than melts

An element belongs to group 9. what common name might be used to describe the group to which this element belongs?

Two liquids that are soluble in each other in any proportion are said to be what?

Which of the following is not a chemical reaction a) gas formation b) solid formation c) energy change d) state change

Which equation is derived from the combined gas law