The muscles of the stomach crush food that has entered the stomach cavity. The effect of this on the food is —
A. O both a chemical and a physical change.
B. neither a chemical nor physical change.
C.
a chemical change, only.
D. a physical change, only.

If 10.g of agno3 is available, what volume of 0.25 m agno3 can be prepared

What is avogadro’s number, and why is it useful

Pinene is an unsaturated hydrocarbon found in pine resin. if pinene has m+ = 136 and contains 1 double bond(s) and 2 ring(s); what is its molecular formula? enter the formula in the form ch first, then all other atoms in alphabetical order; do not use subscripts. the formula is case-sensitive